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What's the short story on why the onboard QMX+ microphone doesn't work (yet). Is there an upcoming solution? Just curious, Roy de K2RMA

It was said, by one with whom I agree: "Does not seem that showing the rx level on the radio primary screen should depend on whether there is an AGC function. Irregardless though, wonder why AGC does

The wiki page QMX QMX_p kernel failures ( /g/QRPLabs/wiki/39740/222925 ) has been updated by @Ludwig_DH8WN <DH8WN@...>. Compare Revisions (

Teddy, please read this page ( /g/QRPLabs/wiki/39740 ) from the QRP Labs Wiki. 73 Ludwig

Allison, Some of them wall warts are pretty good at radiating RF. That being said, creating a clean signal at 30mhz is a significantly different job than designing a 500khz SMPS.? As you well know. A

I had a similar problem but the screens said "WSPR Power" rather than "WSPR Call". Over and over again I re-entered my call sign, getting no change. Then I realized that "WSPR Power" needed to be

?Roy, This is very similar to the one I built from an old modified Radio Shack 110 v heated solder sucker years ago. It works. Here's the pictures. Dave K8WPE

Jerry, What is the difference between a modern wall wart and a class D TX?? No rectifiers, filter is LPF suitable for the band and antenna matching. Oh and stable? frequency source. The hard core

Now the QMX Carrot has successfully completed its second SOTA/POTA activation. And my KX2, remaining in the backpack, is getting jealous. But I almost missed a Summit to Summit due to SWR protection,

No I rarely do am.? ?I did build a retro-75 (SWL circa 2010) that was class E. While trying to may the uSDR work I found the TX made a fair AM tx (modulate the DC to the finals). The large size

The Whitsunday Weekend is the Region 1 CW field day. Get your QRP Labs rig out into the field and have fun. https://www.darc.de/der-club/referate/conteste/iaru-region-1-fieldday/en/ My QMX plus will

you are in my log your Nr. 557? Roelof. I had no rate of 40 but some over 30 but the high bands were painful. I ended up with 700 QSO's. Mixed QMX and Flex 1500. QSK is perfect on the QMX+ and

Allison, Have you documented your AM +PWM scheme anywhere? I’m sitting here with a pair of 813’s in parallel wondering what to do next. John WA6YSY

Well Jorma was there at 7 pm as well and we had a QSO on 20 m andlater 40 m plus Richard G4PCE? So 2 QMX? plus 2 other QSO's Condx not good on 15 m. No RBN at all Igor at least you were at the beach

Hi probably a silly question but which bag do the yellow t37 torroids live ? i have 2 qcx+ kits and i have both red torroids in both kits but no yellow . thanks nic

Sounds like you need to add a Heising Modulator! Jean Shepherd K2ORS (SK) and the Heising Modulator: https://www.youtube.com/watch?v=oTg2BQR5eag&pp=ygUeamVhbiBzaGVwYXJkIGhlaXNpbmcgbW9kdWxhdG9y (

Please also include me in the US group buy. Thanks, Jon K6WV

Tested at 7.5 volts limited to 250 mA, no current draw plugged in. upon pressing the left encoder in maximum current draw at 250 mA upon releasing left encoder, no current draw.

Allison, Been looking at what the AM guys are up to as you may have noticed by the links given in my previous posts. That's exactly what we need for polar SSB, an efficient switch mode RF amp plus a

Gerry. ?Yes agree all that Alison. ?Sorry that doesn’t tie up with my experience on series cell battery systems with Smart BMS’s ?(which is now most systems and most BMS’s.) They are