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Dave, Ron is correct, use the turns, not the inductance. I don't remember where it is, but somewhere Hans said as much. -- 73, Dan? NM3A

To all;? I have been checking other posts and issues but have not been able to find my issue. I just completed a build of the QMX.? For the most part it is working.? I don't use 60M at all.?

Dave, the number of turns is correct. I suspect the inductance values were the original design starting points and other circuit parameters required turns count adjustments to make it work. I just

I also have a query about inductors L515 to L520. I have checked the calculations of all these inductors on toroids.info, and the number of turns on all these inductors seems to be off with respect to

Slight typo in this posting,? But I'm sure that y'all know that I meant to say *QMX-Mini* and not QMC-Mini !! 73, Jody - K3JZD

Thanks for the input Jeff ( /g/QRPLabs/topic/qmx_lacks_a_pwr_hold_signal/106968255 ) (W1NC) - I think lifting the leg might be the next step. If the voltage behaves the same, I'll

Nice battery trick. How did you manage to solder leads to the battery terminals? I gave up and figured I needed one of those spot welder gizmos. Also, very nice case! What's the source or did you

Hi please write to Hannes https://www.qrz.com/db/DL9SCO 73 DE muhsin TA1MHS

Yes. I just checked that on my QMX+ and I see the same condition. Changing to a preset frequency does not switch the filters. Nice catch.. Ron [email protected]> wrote:

Increasing sidetone volume does seem to reduce clicks, but then the sidetone is so loud I musr remove my headphones. Willem, for me it seems cw and digi let you set each volume independently. I did

For you (and anyone else in your situation) – @Jeffrey W Moore<mailto:jeffreymoore@...> W1NC is nothing short of a QMX wizard. He has helped repair well north of a hundred QMX's (and other QRP

Dan, there is a video about this alignment on Youtube from Hans G0UPL/QRP LABS. Very clear instructions.

I have noticed that frequencies selected from the PRESET memories only select the VFO setting and do not select the appropriate BPF or LPF for that frequency. The BPF and LPF are only selected

Bob: I have some. I can mail you one. I live in an Orlando suburb, so its probably a bit far to drive. Unless you're coming over for a Disney visit! 72 Fred WD9HNU

Ray, a voltage drop of 5V across Q103 and Q105 is strange. With all subboards removed? Imho it's a bit to low. Could there be a different problem, maybe affected by the hot air? 73 Ludwig

The wiki page QMX QMX_plus Audio PCM1804 ( /g/QRPLabs/wiki/37111/207151 ) has been updated by @Ludwig_DH8WN <DH8WN@...>. Compare Revisions (

I had the same problem with mine (also a mid-band). What happened for me was that AGC would reduce the receive volume too much, which meant I had to crank up my main volume a lot. This in turn meant I

Greg, * what is the bandwidth of your probe? * Did you use a 10:1 probe, well compensated? * What is the input capacity of your probe? 73, Ludwig

trying to post the picture again... fingers crossed

Yes Tom QRZ is OK. 73 Ian