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Re: QCX Build Step 3.47 - NEWBIES be careful
Hilarious, many laughs, thanks folks... Hans, a great explanation of bugs and we're in awe at the QCX and it's development. I look forward to attaching two bugs to the QCX soon, one is from the 1940s,
By VK5EEE · #17468 ·
Re: QRP Labs on ICQPodCast
Enjoyed that..... Who you are, what you do and why you do it came across very well Hans.. Thanks for the kits Phil? G4JVF
By Philip Thompson · #17467 ·
QRP Labs on ICQPodCast
Hi all A 20-minute interview recorded at Newark UK National Hamfest on 30-Sep-2017, about QRP Labs and the QCX transceiver. It is in the last 20 minutes of ICQ Podcast episode 252, you can listen at:
By Hans Summers · #17466 ·
Re: Power on issue solved on my QCX :-)
Hi Daniel See QCX manual page 115 re "Tuning Clicks" 73 Mike G0CVZ
By Mike Bowthorpe · #17465 ·
Re: Crystal Heat Sink for the Synth module
Hello Micheal. I had a similar problem in 20m trying to get the drift stable. Before doing anything to the rig, I used to get awful drift. Really to the point of getting zero spots. -4 -3 were very
By James Anderson · #17464 ·
Re: Crystal Heat Sink for the Synth module
Well that's promising. The first 8 spots after getting the PA lined back out had 0 drift. Maybe the brass donut did the trick. on 80m the same rig was drifting between 1 and 2.
By Michael Lloyd · #17463 ·
Re: PA Bias- Adjust after band switch?
Well... I put the U3s on the bench, hooked up the oscilloscope, and sure enough, output with (3) BS-170's and a little over 8V was only a little over 100mW. I moved it up to 500mW. We'll see how it
By Michael Lloyd · #17462 ·
5 Watt PA
Well after connecting the control wires and then checking everything again to make sure all was what it was supposed to be I connected the U3S to a dummy load and hit the switch. Everything powered
By Vernon Matheson <vmath@...> · #17461 ·
Re: QCX: Start-up issue, correct solution
David Has it started properly at all yet? I had mine going but was having the issue of not starting first time but only on second power on. At one point when I was powering on and off to test possible
By Kelly Jack · #17460 ·
Re: QCX: Start-up issue, correct solution
I¡¯ve tried the fix but no luck. I have two lines of bars with a pulsing thin line that moves up/down through the bars.. Thinking IC2 is not doing its job, but the pulsing makes me think there is
By David Douglass · #17459 ·
PA Bias- Adjust after band switch?
Should I reset my PA bias after switching bandpass filters?? I wouldn't think so. I ask because I had about 500mW with the 80m filter last night and now on 30m I get 100mW. I set the bias with my
By Michael Lloyd · #17458 ·
Re: QCX; Less WSPR plotted and another issues.
OK Hans, I will check my WSPR signal by myself. Thanks. Hidehiko.
By Hidehiko Komachi - JA9MAT · #17456 ·
Re: Problems with Relay Kit
Are you still having issues what is your exact fault BR Andrew Sent from my Windows 10 phone Sent: 25 October 2017 22:10 To: [email protected] Subject: Re: [QRPLabs] Problems with Relay Kit So as a
By Andrew Lenton · #17455 ·
Re: 5 Watt PA
The shaping and control connections bring on the supply to the PA transistor via the shaping circuit. BR Andrew Sent from my Windows 10 phone Sent: 27 October 2017 20:53 To: [email protected] Subject:
By Andrew Lenton · #17454 ·
Re: Problems with Relay Kit
That's great news to hear. Glad it's up and running. All the best. James. 2E0MUA
By James Anderson · #17453 ·
Re: Problems with Relay Kit
OK so it turns out I need glasses... I'm not even joking here. When I got the magnifier out I had SOOOOOOO many issues, re-soldered most of everything and we are back working. Thanks again to everyone
By Ian Hutchinson · #17452 ·
Re: QCX Build Step 3.47 - NEWBIES be careful
Thanks, Petr I'm going to get one of those. Marc WB2MSC
By Marc Katz · #17451 ·
Re: QLG1 GPS battery charging
Daniel, Similar modules use a large capacitor, 0.08F. The one I tested did not retain charge for long but enough to retain the satellite data for a few hours. This could work with the QLG1. I
By Alan G4ZFQ · #17450 ·
5 Watt PA
Hi all, I now have the V3.12 controller chip set up and working in my U3S. I have the 5 watt PA built with full assembly. My question is if I leave the PTT and the Cosine Shaping in a non-active state
By Vernon Matheson <vmath@...> · #17449 ·
QCX: PA instability, dead MPS2907: correct solution
Hi all This refers to the issue which has one or more of the following symptoms: 1) high current draw on transmit 2) low or unstable power output 3) dead MPS2907 The first batch of 500 kits used the
By Hans Summers · #17448 ·