I can do this

probably

#qdx #qrp #AmateurRadio #electronics

Ok, just discovered digipi.org, which seems like a perfect combination for the QDX for doing digital modes on the go. Here I’d been thinking I might have to go buy a laptop…but here’s a solution for $40ish. #ft8 #qdx #raspberrypi #digipi #hamradio

It took about 6 hours to build, including an embarassing amount of time getting power for my Pinecil solding iron arranged. Not bad. I was worried by all the toroid dread I’d read from others, but really no big deal. Now I’ve got to get an outside antenna sorted out. #qdx #hamradio #ft8 #qrplabs

I built a #QRPGuys 40-10 #Minituner a few years ago but never built a wire for it. Thanks to current #Geomagneticstorm conditions, I built a 40 -15 Meter Linked #EFHW that I can use with my #Youkits #YouKitsHB1B #HB1B and my #QRPlabs #QDX. #AmateurRadio #HamRadio is so much fun!

Since my QTH continues to be inundated by storms, I need to take advantage of them and build my other @qrplabs 20 - 10 meter #QDX #qdxdigital before Ten goes away. #amateurradio #hamradio #FT8 #wsjtx

The #QDX is alive(-ish!)

I finished winding all the toroids today, and tried to get it "on the air" through a dummy load.

It connects to WSJT-X fine, but my cheap USB-A->B cable is sucking up RF like crazy and crashing my interface immediately on transmit. So, I can't actually check transmit power because transmit stops immediately...

Anyone have ideas on how to remedy this?

Finally got around to winding some more of the toroids on my #QDX build...low pass filter toroids finally in ~3 years later (bought this at Dayton 2022...).

I can't find my solder and PCB vise after my move, so I've ordered some more and it should hopefully be coming tomorrow and I can spend my free time finally wrapping up a ton of the soldering projects I've got laying around.

My micro setup for FT8 digital shortwave communications. Battery life is several hours.
#ft8 #hamradio #qrplabs #qdx

An Early Bird #solarstorm Daily Double #POTA #parksontheair activation with some #FT8 using the @qrplabs #QDX & #QRPp CW #MorseCode with the #QCXMini 40m. Double Fun on Kentucky Oaks Day in Louisville, KY at US-7956 Beargrass Creek State Nature Preserve

I continue to regret the rookie mistake of applying 13.8V to my #QRPlabs #QDX digital mode transceiver. Due to shaky hands and needing to desolder a blown SMD driver IC, I got a repair estimate. Sliding scale $95 - $120 + parts & postage. Replacement cost, basically.

Don’t think I can go there so I will have to put this broken radio on the shelf until I have time to figure it out. Dang, it was a fun radio before I let the smoke out.

@ajh I did the same thing 💔. Check the 74ACT08 IC in the amp closely too. In close visual inspection, I could tell I toasted that too. Now I’m fretting about whether I’m capable of desoldering an SMD chip. #QDX

These ingredients produced a great #FT8 / CW #MorseCode #pota #Parksontheair meal on 40/20 meters. This activation was WELL DONE! @qrplabs #QDX #QCX #PutikeegMiniStraightkey #PutikeegKey #HamRadio

Today's ingredients for a #POTA #parksontheair #FT4 #FT8 CW #MorseCode recipe. Looks like the oven might be overheating a little. Doesn't matter. We'll finish with a yummy and tasty morning activation. #AmateurRadio #Hamradio @qrplabs #QDX #QCX @panasonic #Toughpad

I did my first POTA attempt today, activating Vondelpark in Amsterdam (NL-0166). The batteries for both my radio and laptop lasted longer than me in the quite chilly park. I got 13 QSOs on FT8, using a QDX and a telescoping vertical antenna. I was hoping to find a picnic table, but had to make do with just a bench. Lots of people in the park, two passers-by were curious about the antenna.

#hamradio #POTA #QDX

I had my first QSOs with the #QDX radio yesterday!
Turkey, Germany, Italy, Hungary, Croatia on #ft8 from Finland. 5W feels like a lot more than the 1W I had previously with a Softrock. Something is still off in the receiver though. No image rejection according to the built-in tests, and strong noise in the RX audio below ~200Hz.

Somehow I killed the BS170 PA and 74ACT08 driver of my QDX. I guess I powered it accidentally with 13.8V instead of the max 12V. Anyway the little #qdx is working again. 😀Added also a pair of 47V Zennner-Diods to (hopefully) prevent further damage from bad swr.

After Doctor's appt always means #hamradio #amateurradio #pota #parksontheair #ft8 activation with compact @qrplabs #qdx and #panasonic #toughpad

More experimenting with the QDX:

I told WSJT-X to listen for FST4W on 600m, and it works.

Decoded a few stations!

Just RX only, since I can't tune the antenna for those bands, and I have no idea if the QDX would want to TX on those bands safely.

#qdx #qrp #FST4W #hamradio

JS8 on QDX works better with autotuner and big Butternut vertical on roof.

And without desktop computer that forgets USB soundcard on every TX.

And without rig control having hamlib knocked over by RF into serial cables on transmit.

And, oh yeah, not on a system without ntpd, so I was calling out of sync with everyone's listen cycle, 'cause my clock was off.

#qrp #qdx #js8 #hamradio

Started assembling a QDX transceiver by QRP Labs. Going well so far, one toroid done!
Impressions: The manual is very nice, not just good assembly instructions, but also explaining how the circuit works and why certain design choices were made.
#QDX #qrplabs #hamradio