Re: 10w HF Linear PA current consumption does not change after installation
#10W_PA
Ground tex before? measuring? Tx current Draw : " Wot Dat? Boy ? " **
I think you are thinking of the type of PA where the? bias to the high power
Fets is only applied in? Tx mode. The Ten W
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Timothy Fidler
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#125814
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Re: 10w HF Linear PA current consumption does not change after installation
#10W_PA
Schema for reference and Sh_ts and giggles
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Timothy Fidler
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#125813
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Re: QMX and FT8CN fix?
I had the same problem. Put ferrite clip on chokes on USB leads at both ends of USB leads fixed my problem. Works for Win and Rpi now.
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F4WCV
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#125812
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Re: Info QCX mini
Hi
I can recommend this one Francesco
https://www.ebay.co.uk/itm/264886329022?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=s3WTkv4tQQS&sssrc=4429486&ssuid=&var=&widget_ver=artemis&media=COPY
73
By
Steve G4EDG
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#125811
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Re: 10w HF Linear PA current consumption does not change after installation
#10W_PA
You need to? have a method of proving that the mA setting? (in fact? Gate? bias voltage set ) Potentiometers are in fact? affecting the gates of respective IRF mosfets (by driving up the gate
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Timothy Fidler
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#125810
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Info QCX mini
Good morning, I'm Francesco IK8GGU, I purchased a QCX mini for 20 metres. I would like to listen with an external speaker and an amoled speaker was recommended to me. I would like something portable
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Francesco Riganello
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#125809
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Re: #qmx #firmware 1_00_020 released: minor stuff and bug fixes
#qmx
#firmware
I just got my QMX, a few days ago.
It was already flashed with 1_00_019, but after i flashed it to 1_00_020, the text makes no sense.
I had to use the jumper trick, to get into firmware mode.? I
By
OZ5OPK
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#125808
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Re: #qmx #firmware 1_00_020 released: minor stuff and bug fixes
#qmx
#firmware
Niche case maybe but some of us like to listen to the digital sigs for sensory reasons. I find the warble of FT8 very soothing and when I operated the mode I always listened to it as it was very
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Danny Bower
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#125807
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Re: 10w HF Linear PA current consumption does not change after installation
#10W_PA
Hi,
Did you ground the tx before measuring current drawn?
Also does the voltage on the drain pins vary as the potentiomer is turned?
Check these first.
Andy
--
The universe is made up of Protons,
By
M0RON
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#125806
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10w HF Linear PA current consumption does not change after installation
#10W_PA
Hello everyone
I ordered and assembled this PA. I followed every step as carefully as I can while assembling.
When the pots closed fully (to counter-clockwise) current consumption is 140mA stable
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can35mm@...
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#125805
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Re: QMX Carry Case
Hello,
I would advise you to visit local grocery story into food storage section to look for food containers. They are waterproof, good and solid plastic and the most important - you could get an idea
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OH2DZ, Anton
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#125804
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Re: QMX+ Diagnostics Voltage Measurement Question
Hi Jim
Don't worry about it. A bit low, borderline, but acceptable. Device
component variations... there will hopefully in future be a calibration
function which evens out all these variations by
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Hans Summers
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#125803
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QMX+ Diagnostics Voltage Measurement Question
My QMX+ "seems" to be working OK, although 20-17-15 meter power is a bit lower than I'd hoped - just under three watts.
Anyway, tonight I fired up PuTTY and was looking at the diagnostics screen and
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Jim Bennett / K7TXA
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#125802
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Re: #qmx #firmware 1_00_020 released: minor stuff and bug fixes
#qmx
#firmware
Thanks Hans. All the fixes worked for me. Love the radio. Moving on to development board. You actually got me in digital modes finally, because.I can hear the audio. That humanized the feel and allows
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George Korper
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#125801
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Re: FT8 waveform
Hello Hans,
Thank you very much for the detailed explanation. I found the document very useful. I'll keep exploring until my QMX gets home :-)
73,
Gabriel
LW2DVL
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Gabriel LW2DVL
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#125800
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Re: QCX Mini WSPR Without a GPS
GPS is more vital when untethered from a PC connected to the internet.
The U3S does wspr standalone because of the GPS. If you operate your rig somewhere remote without any connection to the web nor
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Curt wb8yyy
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#125799
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Re: Another W1NC Jeff QMX Repair Success
#qmx
#rcvr
#solution
#troubleshooting
I have proven that it is possible to fry IC402 with too much RF on the input side. :(
Did you have an antenna connected to your QMX while you were transmitting with another radio ?
73,
Steve, N2IC
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Steve N2IC
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#125798
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Re: QMX Low Band - TX problem
How are you powering it? I had an issue similar to this when the buck-boost converter that I was using to limit input voltage was silently clipping the input current (due to a bad setting on my
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N1TR
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#125797
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Re: QMX Screen Showing Nothing after Building and Loading Firmware
Seconded.
73
-- Matt N3AR
[email protected]> wrote:
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Kaufman, Matt - N3AR
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#125796
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Re: QMX Screen Showing Nothing after Building and Loading Firmware
Just a quick update regarding my issue with the LCD:
I ended up sending the rig to *Jeff Moore, W1NC* , for further inspection. He did an AMAZING job of troubleshooting and fixing the LCD data
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Sepehr - N6IRN
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#125795
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