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122/134GHz interest list
Tim: I am interested in one "made board" and one "just board". Thanks Don Woodward KD4APP
Tim: I am interested in one "made board" and one "just board". Thanks Don Woodward KD4APP
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Don Woodward
· #2980
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Nextgen - dual band transverter for 122/134 GHz
Good point on laptops - that seems to be what caused problems - I have a desktop in the lab so never tried a laptop. 73's Don W. KD4APP EM84au
Good point on laptops - that seems to be what caused problems - I have a desktop in the lab so never tried a laptop. 73's Don W. KD4APP EM84au
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Don Woodward
· #2933
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Nextgen - dual band transverter for 122/134 GHz
On both of my boards I connected the appropriate TX, RX and Ground pins on a DB9 connector and then used a USB to Serial adapter to the PC with Putty - worked fine. Don W. KD4APP EM84au https://kd4app
On both of my boards I connected the appropriate TX, RX and Ground pins on a DB9 connector and then used a USB to Serial adapter to the PC with Putty - worked fine. Don W. KD4APP EM84au https://kd4app
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Don Woodward
· #2930
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spare horn order people list
I sent you a direct email immediately after your email posted as requested and I am not on this spreadsheet. Don W KD4APP Get Outlook for iOS
I sent you a direct email immediately after your email posted as requested and I am not on this spreadsheet. Don W KD4APP Get Outlook for iOS
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Don Woodward
· #2862
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3D printed antenna experiments
Really nice work! 73's Don W. KD4APP
Really nice work! 73's Don W. KD4APP
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Don Woodward
· #2750
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Power detection with IR thermometer
I had problems opening it with the online powerpoint but saved it local and then opened it WITH MY local copy but then it had to be repaired first. 73 Don W KD4APP Get Outlook for iOS
I had problems opening it with the online powerpoint but saved it local and then opened it WITH MY local copy but then it had to be repaired first. 73 Don W KD4APP Get Outlook for iOS
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Don Woodward
· #2738
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Test point frequency
Sorry I missed where you modified them for external references. I pad the external reference with a 4db attenuator on my units. Have you tried that? 73’d Don W KD4APP Get Outlook for iOS
Sorry I missed where you modified them for external references. I pad the external reference with a 4db attenuator on my units. Have you tried that? 73’d Don W KD4APP Get Outlook for iOS
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Don Woodward
· #2718
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Test point frequency
What frequency is the 10MHz internal oscillator unit showing for your units? 73's Don W. KD4APP EM84au https://kd4app.blogspot.com
What frequency is the 10MHz internal oscillator unit showing for your units? 73's Don W. KD4APP EM84au https://kd4app.blogspot.com
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Don Woodward
· #2714
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USB / serial programming problem with laptop.
Gordon: Thanks for the info - I saw another user explained the technical aspects of the issue. I wonder if the 122GHz unit and the laptop were both powered by batteries if you would see the issue? One
Gordon: Thanks for the info - I saw another user explained the technical aspects of the issue. I wonder if the 122GHz unit and the laptop were both powered by batteries if you would see the issue? One
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Don Woodward
· #2684
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USB / serial programming problem with laptop.
Just out of curiosity how are you powering your units? 73’s Don W KD4APP EM84au Get Outlook for iOS
Just out of curiosity how are you powering your units? 73’s Don W KD4APP EM84au Get Outlook for iOS
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Don Woodward
· #2681
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Stored Reference Constant for Internal 10 MHz TCXO
Your idea sounds like a solution, but what about just doing the mod for and using a external 10MHz source? 73’s Don W. KD4APP EM84au https://Kd4app.blogspot.com Get Outlook for iOS
Your idea sounds like a solution, but what about just doing the mod for and using a external 10MHz source? 73’s Don W. KD4APP EM84au https://Kd4app.blogspot.com Get Outlook for iOS
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Don Woodward
· #2676
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External 10mHz reference mod., second run boards.
Looks nice. I followed VA3TO’s mod he posted, and mine works fine. 73 Don W KD4APP EM84au HTTPS://Kd4app.blogspot.com Get Outlook for iOS
Looks nice. I followed VA3TO’s mod he posted, and mine works fine. 73 Don W KD4APP EM84au HTTPS://Kd4app.blogspot.com Get Outlook for iOS
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Don Woodward
· #2668
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PIC memory
Hi Tim: Thanks - that's the HEX file I am trying to use on my PIC development board - just want to see if what's downloaded from the 122GHz unit is different - I don't want to risk bricking my unit si
Hi Tim: Thanks - that's the HEX file I am trying to use on my PIC development board - just want to see if what's downloaded from the 122GHz unit is different - I don't want to risk bricking my unit si
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Don Woodward
· #2642
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PIC memory
Hey Zac: Would it be possible for you to send me the 122GHz HEX file you are using? I've tried multiple chips and even two different PICKIT3 programmers. I have a different development board coming to
Hey Zac: Would it be possible for you to send me the 122GHz HEX file you are using? I've tried multiple chips and even two different PICKIT3 programmers. I have a different development board coming to
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Don Woodward
· #2637
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PIC memory
Zac: When reprogramming do you just write the HEX file, or do you need to create a project with an IDE and write that way? I wrote the 122GHz HEX file to a blank PIC 16LF877A (40-pin DIP) and connecte
Zac: When reprogramming do you just write the HEX file, or do you need to create a project with an IDE and write that way? I wrote the 122GHz HEX file to a blank PIC 16LF877A (40-pin DIP) and connecte
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Don Woodward
· #2629
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Unit not going in to rx
The PIC in these units is a PIC16LF877A which needs 3.3v 73's Don W. KD4APP
The PIC in these units is a PIC16LF877A which needs 3.3v 73's Don W. KD4APP
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Don Woodward
· #2578
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Second batch module problem .
Nice job. Did you use a hot air gun to remove and replace it? 73’s Don W KD4APP Get Outlook for iOS
Nice job. Did you use a hot air gun to remove and replace it? 73’s Don W KD4APP Get Outlook for iOS
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Don Woodward
· #2551
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Second batch module problem .
Maybe try shorting your beacon string ? I count 23 on yours - 24 is max 73 Don W KD4APP Get Outlook for iOS
Maybe try shorting your beacon string ? I count 23 on yours - 24 is max 73 Don W KD4APP Get Outlook for iOS
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Don Woodward
· #2540
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Second batch module problem .
Thanks I remember now it is optional. He should still see a red then green LED and the 10Mhz output. 73’s Don W KD4APP Get Outlook for iOS
Thanks I remember now it is optional. He should still see a red then green LED and the 10Mhz output. 73’s Don W KD4APP Get Outlook for iOS
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Don Woodward
· #2537
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Second batch module problem .
Do you have a 1PPS connected? I think you need that. Does the LED go green or does it stay Red? It should go green with 1PPS connected and then you should have a 10Mhz signal present on the 10Mhz port
Do you have a 1PPS connected? I think you need that. Does the LED go green or does it stay Red? It should go green with 1PPS connected and then you should have a 10Mhz signal present on the 10Mhz port
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Don Woodward
· #2535
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