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I think I'm missing something. This behavior is so bizarre: Purchased 1.09a chip from Hans and inserted into 40m mini. 5 watts out with 1.0:1 SWR into a dummy load. All good! Then tested on my dipole

Hi Guys A reminder... Some of you are making it more complicated than it needs to be. Some others are going where no man has gone before. Which is fine too. But it's worth remembering that how to use

John, It's only in the alpha builds. www.w1hkj.conm/alpha/flrig <http://www.w1hkj.conm/alpha/flrig>. You'll have to compile it yourself. To do that for any of the flxxx apps go here and follow the

Hi Joe How many balloons do you intend to launch at the same time with the same call sign.? Technically it is possible with the QRP-LABS tracking website, as long as the channel number is different,

Don't know why you would need a samba server.... What OS are you on?? What is pphAdmin? Mike W9MDB

I think I found the way out. I went back to FLrig and selected QCH+. It activated. I then went to JS8Call and there is a QCX/QDX radio type. AND CAT IS GREEN! Now I need to read the book. All is well.

I have fallen down the rabbit hole. I installed HAMlib and I do indeed see a QCX/QDX radio type, but to install that radio selection I need to use pphAdmin. To install this utility I need to install a

Timo, It all depends on how the tri-filar is connected. It's just three parallel windings on a toroid. You could connect all three is series, tap one of the common points and get 9:1 or, you could tie

Thank you, Muhsin. I had wondered what I was missing. This gives me something to look at and consider. Always interested in learning, though I'd be apprehensive about not having the LPF's. I may be

Is there somewhere I can find the mods, and fixes for rev 3 in one place? or at least a list of them that I can research.. I'll also need same for some rev 1's thanks 73 Vince N2AIE

Thx Ron, Makes sense and is what I expected.? So if bifilar provides a 1:4 impedance step, what would trifilar in the same configuration provide as a impedance step? 73 Timo zr6tm

Hi Stu QDX has 4 BPFs in the front end (selection of the toroid here might be tricky, 37-2 or 37-6) 3 LPFs after the PA output please study the manual for normal and hi-band you'll figure out I did

Hi Tim. In this case it is providing a 1:4 impedance step up from the 12.5 ohm FET Drain to 50 ohms at the input of the low pass filter. Ron

Thx Dave and Paul, Looking at the snip I agree that the bifilar winding 1 connects the 12v supply to the drain of the mosfet.? Winding 1 then connects to Winding 2 to provide the PA output.? Sorry

What is the best way to track many U4B trackers with one call sign? Apologize if this was discussed before but would like to know what format actually works well (routed correctly to all the WSPR

I'm not having good luck putting all four into a working chain. With the QDX USB attached to the Pi I see a serial QDX port with the Config | Setup | Other tabs. I press the 'init' but I do not see

Hi Bryan I had a similar thing happen on a QCX mini, the culprit was a burned up Q5...a BS170... Strangely this started as a reduction in TX power, Q5, shunting the output to ground partially until it

Greetings all. I finally ordered my first kit (QDX) from Hans. Something I should have done a couple years ago had I not had a silly confusion about the nature of MFSK in general, Olivia (my favorite

I presume, because your question is not sufficiently clear, that you are talking about a push pull amplifier, where a bifilar or two winding transformer is connected between the FET Drains and the

IMHO, the reason for trifilar is for /tight coupling/ and /balance/ between the windings. For when "close" _isn't_ good enough! ;-) Paul