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Yes, the free and easy download was about 40-50th link in a Google search. It reminds me of how much I've touched on in ~70 years in the hobby and I'm still limping... 73 Alan G4ZFQ

AND... another thread even since you asked! /g/QRPLabs/message/137722 Interesting that this gets so much discussion.

Jeepers. Didn’t we have this debate yesterday. just because someone ‘didn’t blow up’ their radio by ignoring the instructions doesn’t ?mean it’s good idea generally Designer says 12v is

Probably fine, assuming your antenna system is well behaved. Safer if you add a voltage drop using a diode such as a 1n4007. Safer still if you are a volt or two down from 12v, at reduced power

This book looks readily available as a pdf online. I must confess I'm one of those that limp by though. I'd love to understand more of the technical aspect but sadly my spare time is limited and I

Fernando, The QMX includes techniques first developed for the QCX and QDX. There sections in each assembly and/or operations manual that delve into how it works. They are not always terse. The Wiki

I run my QMX and QMX+ on 3s lipos so 12.6 fully charged and never had an issue. I've also run them on a 12v lifepo4 so 13.6v fully charged and not had an issue. CW only into good antennae.? I doubt

I've read a bit about the hazards of overvoltage for the QMX+. The supply I have produces 12.25 VDC dropping to 12.14 VDC under load. Will the QMX+ be safe at these voltages? I swear I wanted to find

Bill, What will the QSX do that the QMX could not? The new approach to SSB transmission may well prove superior to what was planned for the QSX. There are a few enhancements to the QMX that I might

Paul, Welcome to the forum! This is a very regular topic of conversation. I thought the following recent thread was particularly on point: /g/QRPLabs/message/137125 Scroll down to

Hi, I have worked SSBat about 2 watts and astonished the other hams I was talking to while they were running hundreds of watts (evil grin). It is about picking the right band at the right time of day

Anybody know the tolerance for input power voltage?? i.e. is the upper limit 12.35v for a 12 volt build and let's say 9.27v for a 9 volt build?? Or is it so sensitive that i need to have 12.0 ish or

That's a possibility. I suppose I could pop off the front panel and use a jumper in the appropriate pin socket. That could eliminate both button pressure and vibrations. But all roads lead to cold

Bill, I totally agree.? Jeff rescued me and I was completely hopeless about my QMX build.? First transceiver kit I've ever attempted, but Jeff got it!? He's amazing with constructive feedback about

I wonder if it's from the pressure at the encoder. Every time you press the PCB is bend a little bit. Could it be a colder solder joint is changing the parameters. Or could it be an unwanted solder

As a mag loop user myself (also awaiting delivery on a QMX+), I would like to hear more about what and how your SWR+ box works.

But not right now when I'm away due to family winter vacation. Next update will be something like Feb 2nd 73 Hans

Please excuse this if somewhat off-topic here.? I would like to learn about the operation of the QMX family of kits over and above the terse explanations given in the manuals. I would be grateful

Thank you. Yahoo Mail: Search, Organize, Conquer On Fri, Jan 24, 2025 at 11:34 AM, Wolfgang, OE3WFA via groups.io<wolfgang.franta@...> wrote: no, there is no kit until now If

Hi, i initially built my QDX for 9v using WTST and .6mm wire, i took a couple power measurements into dummy load with a good power meter vs supply voltage. attached here. It was running a bit hot at