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Re: ARRL Technical Innovation Award.
Encouragement sent. -- 73 Karl KI4ZUQ
By Karl · #119981 ·
Re: New QMX Rev3 build - no power out...
John, I have T501 rewired and have some test leads connecting a 50 ohm load to the secondary windings and my Nano VNA attached to the primary windings.? I am not sure which trace will give me the
By Michael LaBlanc · #119980 ·
QCX-mini and AGC Board
Hans, I just got 4 AGC boards for my 4 QCXs. The original QCX rev 2 and 3 installations were easy and the directions excellent. However, for my QCX-mini rev 1 and 2, I noticed a problem with the
By Daniel Walter · #119979 ·
Re: New Rev 3 Hi Band QMX Build - RF Sweep Test locks up the QMX and Tx causes fireworks?
John, Thanks again for the steer and also for the pictures of your vintage scope that was probably the last model I used back in the day:))? I'm still getting to grips with my new Rigol "techno"
By Chris Bolton · #119978 ·
Re: QMX with POTA Yesterday
yes Jason, it's the 3000 and yes, the paddle is by N6ARA :) in my setup the 3000 only feeds the QMX, the trekstor 2in1 is powered? by the LogiLink solar bank .... that's enough for several days?
By Udo Die?elberg DF4BJ · #119977 ·
Re: QMX: C516 - C525 swapped value #qmx
L is the formula symbol for the inductance. Using the number of turns from the manual L seems to be to high for most of my toroids. Building different LPF on a tiny rf testboard and using numbers of
By @Ludwig_DH8WN · #119976 ·
Re: QMX with POTA Yesterday
Eric: For this setup (with the QMX), I'm using the Pi for FT8 and JS8Call.? There are probably other modes in FLDigi that can be used but I'll likely never touch them.? When SSB gets implemented on
By Jason - KO4NDP · #119975 ·
Re: Keep QMX L401 Loop Intact or Cut into Two Wires ?
Good luck.Work smart.Pay it forward if it works for you too. :) Greg Yahoo Mail: Search, Organize, Conquer On Wed, Mar 27, 2024 at 4:26 PM, Bill Jobes via groups.io<jobes@...>
By Greg McCain · #119974 ·
Re: Keep QMX L401 Loop Intact or Cut into Two Wires ?
I appreciate the insight, Adrian. It's what I suspected, but was not certain. 72,? Bill? W3WJ
By Bill Jobes · #119973 ·
Re: Keep QMX L401 Loop Intact or Cut into Two Wires ?
Thanks, Adrian. Bill W3WJ
By Bill Jobes · #119972 ·
ARRL Technical Innovation Award #50w #qcx #qdx #qmx
Hans Summer has been nominated? for the 2024 ARRL Technical Innovation Award. If you have supporting/endorsing comments for Hans¡¯ (G?UPL) nomination for the 2024 Technical Innovation Award, please
By Chris KB1NLW · #119971 ·
Re: QMX with POTA Yesterday
Jason, As others have said, great post and photos.? Really a tremendous set-up and love that home-brewed antenna assembly. Please pardon my ignorance, but for what is the Pi Zero 2W w/screen
By Eric Fox · #119970 ·
ARRL Technical Innovation Award.
Hans Summer has been nominated? for the 2024 ARRL Technical Innovation Award. If you have supporting/endorsing comments for Hans¡¯ (G?UPL) nomination for the 2024 Technical Innovation Award, please
By Chris KB1NLW · #119969 ·
Re: Keep QMX L401 Loop Intact or Cut into Two Wires ?
Thanks very much Greg for taking the time to write this detailed explanation. I am making the low version with one 15 turn loop.? Thanks to your response, I can now proceed with a bit more
By Bill Jobes · #119968 ·
Re: New QMX Rev3 build - no power out...
Thanks, Mike. I'm looking forward to hearing how it goes. My SWR readings look so much like yours and I have no power out at all. Wayne KB4DSF
By Wayne KB4DSF · #119967 ·
Re: QMX no initial power up
This is where I am , now. I have removed T501 and T507, but that did not fix my short. I've now traced the short to Q507. All three legs are shorted to each other. Is there a possibility that Q507 is
By Wayne KB4DSF · #119966 ·
Re: Keep QMX L401 Loop Intact or Cut into Two Wires ?
You didn't mention which QMX version you are building ... High or low ... But for either version,? any loop(s) do in fact both go into the larger holes indicated in the specific instructions for the
By Greg McCain · #119965 ·
Re: Keep QMX L401 Loop Intact or Cut into Two Wires ?
And forgot to mention - yes, if you cut the loop prior, you have to solder the wires in the same hole
By Adrian YO3GFH · #119964 ·
Re: Keep QMX L401 Loop Intact or Cut into Two Wires ?
Hi Bill, Even if you keep the loop intact, after soldering you'll probably have to knip the excess length, so that it doesn't touch the case. If you arranged so that the loop (L401 tap) has optimum
By Adrian YO3GFH · #119963 ·
Re: New QMX build displays only squares
It usually means that the power or signal is not getting to the display board. Recheck the connections - it's easy to miss one of the those 16 cutoff connections - must be soldered on both boards.
By mike/w1mt · #119962 ·