AB8OJ Wiki - User contributions [en]

ARROW Mesh

2022-07-27T03:51:01Z

Ab8oj: Created page with "[https://web.archive.org/web/20160805173552/http://bloodhound.aredn.org/products/AREDN/wiki/HowTo/Unbrick Unbricking an M2]"

[https://web.archive.org/web/20160805173552/http://bloodhound.aredn.org/products/AREDN/wiki/HowTo/Unbrick Unbricking an M2]

Main Page

2022-07-27T03:47:43Z

Ab8oj:

'''AB8OJ's wiki (wiki.ab8oj.radio)'''

[[ARROW uBITX Group Purchase]]

[[ARROW NPR]]

[[ARROW Mesh]]
----

'''Links of Interest'''

[https://w8rp.org ARROW club web site]

...ARROW Mesh info...

----
MediaWiki information:

Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.

* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]

ARROW NPR

2019-12-14T20:09:17Z

Ab8oj:

== Links to more information ==
[https://www.elekitsorparts.com/product/npr-70 Author's {F4HDK) main page on hackaday]

[https://www.elekitsorparts.com/product/npr-70 NPR modems purchase page]

[https://cdn.hackaday.io/files/1640927020512128/NPR_specification_v2.0.pdf NPR specification]

[https://destevez.net/2019/04/npr-hamnet-over-70cm/ EA4GPZ/M0HXM detailed description]

[https://spectrum.ieee.org/geek-life/hands-on/build-a-longdistance-data-network-using-ham-radio IEEE Spectrum article]

[https://www.arednmesh.org/content/npr-new-packet-radio-available Nice technical discussion on arednmesh.org, much of it centered on integrating NPR and AREDN]

ARROW NPR

2019-12-14T20:05:58Z

Ab8oj: Created page with " == Links to more information == [https://www.elekitsorparts.com/product/npr-70 Author's {F4HDK) main page on hackaday] [https://www.elekitsorparts.com/product/npr-70 NPR mod..."

== Links to more information ==
[https://www.elekitsorparts.com/product/npr-70 Author's {F4HDK) main page on hackaday]

[https://www.elekitsorparts.com/product/npr-70 NPR modems purchase page]

[https://destevez.net/2019/04/npr-hamnet-over-70cm/ EA4GPZ/M0HXM detailed description]

[https://spectrum.ieee.org/geek-life/hands-on/build-a-longdistance-data-network-using-ham-radio IEEE Spectrum article]

[https://www.arednmesh.org/content/npr-new-packet-radio-available Nice technical discussion on arednmesh.org, much of it centered on integrating NPR and AREDN]

Main Page

2019-12-14T19:36:32Z

Ab8oj:

'''AB8OJ's wiki (wiki.ab8oj.radio)'''

[[ARROW uBITX Group Purchase]]

[[ARROW NPR]]
----

'''Links of Interest'''

[https://w8rp.org ARROW club web site]

...ARROW Mesh info...

----
MediaWiki information:

Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.

* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]

Main Page

2019-12-14T19:36:15Z

Ab8oj:

'''AB8OJ's wiki (wiki.ab8oj.radio)'''

[[ARROW uBITX Group Purchase]]
[[ARROW NPR]]
----

'''Links of Interest'''

[https://w8rp.org ARROW club web site]

...ARROW Mesh info...

----
MediaWiki information:

Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.

* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]

ARROW uBITX Group Purchase

2018-04-04T01:52:48Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

[https://groups.io/g/BITX20 Mailing list for all BITx radios]

[http://ubitx.net/ Huge resource page by ZL1AXG]

[http://bitxmap.com Map of BITx users]
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
*** Voltage regulator + capacitor (Ron's solution ... see mailing list archives)
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
** The PA is reported to be quite sensitive to SWR / reflected power. Make sure to use a good dummy load for power measurement.
* It has been reported that the schematic has an error: <one of the diodes> is shown backwards.
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* [http://www.hamskey.com/ KD8CEC software]
----
'''Advanced Mods'''
* AGC circuit
** VK2ETA simple software AGC mod (see mailing list)
** G7JUR used an audio AGC board by Walford Electronics (G3PCJ).
*** Disconnected the yellow wire from the top of the Volume pot. Yellow wire to the input of the AGC board via a 10 K resistor.
*** Output to the top of the Volume pot. Removed R235 and connected top of C252, to top of the Volume pot via 1 K resistor and 0.1 microfarad in series (Cap stops DC on the input of the audio amp ) This now puts the CW side tone in after the AGC board.
*** also replaced the TDA2822M with a LM380-8 will need a bit of jiggling with the pin connections. hint turn it upside down. The LM380-8 will work from 10 to 18 volts, and has built in thermal protection.
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
* [https://vk4pln.blogspot.com.au/2018/03/ubitx-am-bci-filter-35mhz-high-pass_31.html VK4PLN AM broadcast filter (3.5 MHz high-pass filter)]
* [https://vk4pln.blogspot.com.au/2018/03/raduinoi2c-board.html VK4PLN Raduino board replacement {fixes and I2C)]
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-04-04T01:36:58Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

[https://groups.io/g/BITX20 Mailing list for all BITx radios]

[http://ubitx.net/ Huge resource page by ZL1AXG]

[http://bitxmap.com Map of BITx users]
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
*** Voltage regulator + capacitor (Ron's solution ... see mailing list archives)
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
** The PA is reported to be quite sensitive to SWR / reflected power. Make sure to use a good dummy load for power measurement.
* It has been reported that the schematic has an error: <one of the diodes> is shown backwards.
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* [http://www.hamskey.com/ KD8CEC software]
----
'''Advanced Mods'''
* AGC circuit
** VK2ETA simple software AGC mod (see mailing list)
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
* [https://vk4pln.blogspot.com.au/2018/03/ubitx-am-bci-filter-35mhz-high-pass_31.html VK4PLN AM broadcast filter (3.5 MHz high-pass filter)]
* [https://vk4pln.blogspot.com.au/2018/03/raduinoi2c-board.html VK4PLN Raduino board replacement {fixes and I2C)]
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-04-01T17:27:37Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

[https://groups.io/g/BITX20 Mailing list for all BITx radios]

[http://ubitx.net/ Huge resource page by ZL1AXG]

[http://bitxmap.com Map of BITx users]
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
*** Voltage regulator + capacitor (Ron's solution ... see mailing list archives)
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
** The PA is reported to be quite sensitive to SWR / reflected power. Make sure to use a good dummy load for power measurement.
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* [http://www.hamskey.com/ KD8CEC software]
----
'''Advanced Mods'''
* AGC circuit
** VK2ETA simple software AGC mod (see mailing list)
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
* [https://vk4pln.blogspot.com.au/2018/03/ubitx-am-bci-filter-35mhz-high-pass_31.html VK4PLN AM broadcast filter (3.5 MHz high-pass filter)]
* [https://vk4pln.blogspot.com.au/2018/03/raduinoi2c-board.html VK4PLN Raduino board replacement {fixes and I2C)]
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-04-01T17:27:22Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

[https://groups.io/g/BITX20 Mailing list for all BITx radios]

[http://ubitx.net/ Huge resource page by ZL1AXG]

[http://bitxmap.com Map of BITx users]
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
*** Voltage regulator + capacitor (Ron's solution ... see mailing list archives)
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
** The PA is reported to be quite sensitive to SWR / reflected power. Make sure to use a good dummy load for power measurement.
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* [http://www.hamskey.com/ KD8CEC software]
----
'''Advanced Mods'''
* AGC circuit
** VK2ETA simple software AGC mod (see mailing list)
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
* [https://vk4pln.blogspot.com.au/2018/03/ubitx-am-bci-filter-35mhz-high-pass_31.html VK4PLN AM broadcast filter (3.5 MHz high-pass filter)]
[https://vk4pln.blogspot.com.au/2018/03/raduinoi2c-board.html VK4PLN Raduino board replacement {fixes and I2C)]
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-04-01T17:24:19Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

[https://groups.io/g/BITX20 Mailing list for all BITx radios]

[http://ubitx.net/ Huge resource page by ZL1AXG]

[http://bitxmap.com Map of BITx users]
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
*** Voltage regulator + capacitor (Ron's solution ... see mailing list archives)
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
** The PA is reported to be quite sensitive to SWR / reflected power. Make sure to use a good dummy load for power measurement.
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* [http://www.hamskey.com/ KD8CEC software]
----
'''Advanced Mods'''
* AGC circuit
** VK2ETA simple software AGC mod (see mailing list)
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
* [https://vk4pln.blogspot.com.au/2018/03/ubitx-am-bci-filter-35mhz-high-pass_31.html VK4PLN AM broadcast filter (3.5 MHz high-pass filter)]
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-04-01T17:14:55Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Mailing list for all BITX radios: https://groups.io/g/BITX20

Huge resource page by ZL1AXG: http://ubitx.net/

Map of BITx users: http://bitxmap.com
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
*** Voltage regulator + capacitor (Ron's solution ... see mailing list archives)
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
** The PA is reported to be quite sensitive to SWR / reflected power. Make sure to use a good dummy load for power measurement.
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/
----
'''Advanced Mods'''
* AGC circuit
** VK2ETA simple software AGC mod (see mailing list)
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-31T14:54:46Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Mailing list for all BITX radios: https://groups.io/g/BITX20

Huge resource page by ZL1AXG: http://ubitx.net/

Map of BITx users: http://bitxmap.com
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
*** Voltage regulator + capacitor (Ron's solution ... see mailing list archives)
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
** The PA is reported to be quite sensitive to SWR / reflected power. Make sure to use a good dummy load for power measurement.
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/
----
'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-30T23:00:26Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Mailing list for all BITX radios: https://groups.io/g/BITX20

Huge resource page by ZL1AXG: http://ubitx.net/

Map of BITx users: http://bitxmap.com
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
*** Voltage regulator + capacitor (Ron's solution ... see mailing list archives)
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/
----
'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-29T02:04:14Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Mailing list for all BITX radios: https://groups.io/g/BITX20

Huge resource page by ZL1AXG: http://ubitx.net/

Map of BITx users: http://bitxmap.com
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/
----
'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-29T01:33:56Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Huge resource page by ZL1AXG: http://ubitx.net/

Map of BITx users: http://bitxmap.com
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/
----
'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-28T23:25:57Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Huge resource page by ZL1AXG: http://ubitx.net/
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
----
'''Building Hints and Tips'''
----
'''Operating Hints, Tips and Warnings'''
* '''DO NOT insert a mono plug into the stereo audio jack''' -- this shorts the output of the audio amp and will likely blow it up
----
'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/
----
'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-28T23:23:02Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Huge resource page by ZL1AXG: http://ubitx.net/
----
'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/
----
'''Building Hints and Tips'''
----
'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/
----
'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy
----
'''Enclosure Ideas'''
----
'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-28T23:22:15Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Huge resource page by ZL1AXG: http://ubitx.net/

'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output differences across bands
** http://ubitx.net/fix-fix-uneven-tx-output-across-bands/

'''Building Hints and Tips'''

'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/

'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy

'''Enclosure Ideas'''

'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-28T15:47:13Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Huge resource page by ZL1AXG: http://ubitx.net/

'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output problems

'''Building Hints and Tips'''

'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/

'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.
* KD2NDR port to Teensy

'''Enclosure Ideas'''

'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-28T15:44:17Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Huge resource page by ZL1AXG: http://ubitx.net/

'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output problems

'''Building Hints and Tips'''

'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/

'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...Benefit: saves your ears, $0.02 diode, trivially easy to implement.Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.Comment: A CW ops dream.

'''Enclosure Ideas'''

'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-28T15:43:12Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

Huge resource page by ZL1AXG: http://ubitx.net/

'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
*** LM386 + adaptor
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output problems

'''Building Hints and Tips'''

'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/

'''Advanced Mods'''
* AGC circuit
** K9HZ summary of options
***... audio range passband...
Benefit: saves your ears, $0.02 diode, trivially easy to implement.
Bad: only protects your ears... not RF sections from excessive signal and overload. Not a true AGC signal for "s" meter, only an audio strength.
Comment: Save the $0.02 diode, turn the damn volume down and live with the IF overload.
***... IF range passband...
Benefit: Saves ears, prevents IF overload, AGC signal for "s" meter (can be calibrated to real signal strength by reference).
Bad: More complicated/ more parts, RF level attenuator and AGC response, more expensive than the $0.02 diode,
Comment: can be triggered by anything in the passband and that can be good and bad.
***... Full range integrated Passband (front end through audio section)...
Benefit: True AGC on all levels, no overload or distortion of any stage. AGC signal for "s" meter (can be calibrated to real signal strength by reference).
Bad: Very complicated, impacts every RF/IF/Audio stage. Lots of mods and parts.
Comment: A CW ops dream.

'''Enclosure Ideas'''

'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-28T15:25:14Z

Ab8oj:

ARROW uBITX Group Purchase

2018-03-28T15:19:23Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list, Some ideas discussed there:
*** Replace with 8-pin socket and NJM2073D
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output problems

'''Building Hints and Tips'''

'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/

'''Enclosure Ideas'''

'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-27T19:55:55Z

Ab8oj:

Things related to the uBITX radio group purchase made by a number of ARROW members.

'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the mailing list
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output problems

'''Building Hints and Tips'''

'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/

'''Enclosure Ideas'''

'''ARROW Rig Showcase'''

Main Page

2018-03-27T19:55:32Z

Ab8oj: Fixed case of uBITX page

'''AB8OJ's wiki (wiki.ab8oj.radio)'''

[[ARROW uBITX Group Purchase]]

----

'''Links of Interest'''

[https://w8rp.org ARROW club web site]

...ARROW Mesh info...

----
MediaWiki information:

Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.

* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]

ARROW uBitX Group Purchase

2018-03-27T19:55:07Z

Ab8oj: Ab8oj moved page ARROW uBitX Group Purchase to ARROW uBITX Group Purchase: Changed case of title to match actual product

#REDIRECT [[ARROW uBITX Group Purchase]]

ARROW uBITX Group Purchase

2018-03-27T19:55:07Z

Ab8oj: Ab8oj moved page ARROW uBitX Group Purchase to ARROW uBITX Group Purchase: Changed case of title to match actual product

Things related to the uBITX radio group purchase made by a number of ARROW members.

'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the uBitX mailing list
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output problems

'''Building Hints and Tips'''

'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/

'''Enclosure Ideas'''

'''ARROW Rig Showcase'''

ARROW uBITX Group Purchase

2018-03-27T19:53:35Z

Ab8oj: Created page with "Things related to the uBITX radio group purchase made by a number of ARROW members. '''Problems, Issues and Glitches''' - significant issues reported by builders * TDA2822 st..."

Things related to the uBITX radio group purchase made by a number of ARROW members.

'''Problems, Issues and Glitches''' - significant issues reported by builders
* TDA2822 stereo amplifier high failure rate
** Reported on the uBitX mailing list
** <link(s) to best discussion(s), fix(es), etc(es)>
* Power output problems

'''Building Hints and Tips'''

'''Recommended Mods'''
* KD8CEC software
** http://www.hamskey.com/

'''Enclosure Ideas'''

'''ARROW Rig Showcase'''

MediaWiki:Sidebar

2018-03-27T19:43:22Z

Ab8oj: Created page with " * navigation ** mainpage|mainpage-description ** recentchanges-url|recentchanges ** helppage|help * SEARCH * TOOLBOX * LANGUAGES"

* navigation
** mainpage|mainpage-description
** recentchanges-url|recentchanges
** helppage|help
* SEARCH
* TOOLBOX
* LANGUAGES

Main Page

2018-03-27T18:27:55Z

Ab8oj: Initial setup.

'''AB8OJ's wiki (wiki.ab8oj.radio)'''

[[ARROW uBitX Group Purchase]]

----

'''Links of Interest'''

[https://w8rp.org ARROW club web site]

...ARROW Mesh info...

----
MediaWiki information:

Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.

* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]