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Also with fldigi, be sure to check the TX level attenuator in the lower right corner. Mine was set to -3 dB, had to set it to 0 to get it to work.

Hi Phil The default "rising edge threshold" setting in the QDX configuration screen is set to 80%. That's why it only seems to work when the WSJT-X slider is set to maximum. I believe the WSJT-X

Hi all, Just finished mine between 3.7 and 4.5 W with 12 V depending on band. FWIW, I’m running Windows 10, and WSJTX 2.4.0. I set the Rig to Kenwood TS440S as recommended, but was having trouble

My QDX has been on the air for a day, so far on 40m only. Receiver performance has exceeded my expectations. I have built it for 12V operation and am running with 11V at the moment - lots of QSOs with

Perhaps this is a silly question.? Why does the image of the transformer toroid in the QCX+ assembly manual show 5/5/5/37 windings when the manual indicates it should be 5/5/5/38? Am I

Thank you Mike, I was not aware of that. John Myers, WG8X

I added a 20 dB, 5 W attenuator in series with the antenna line and have been running 17 dBm = 50 mW on 20m and 40m WSPR. Quite amazing how well the receiver works, even with the attenuation and also

Ken, Bob Thank you for your thoughts.? I will try to find some time later today to try them out.? Mine doesn't pass the CAT test - the errors come up when the button is clicked and I'm pretty sure

Matt, I have never checked but there should be no reason for it to get hot. Have you checked the voltages on IC5? Someone has reported damage to IC5 after a similar BS170 failure. (Does your magnetic

hi Hans, I burned two of the BS170 without making any action in the Software. I run about 25 QSOs on 40m an 30m . Than I changed to 20m using a Magnetic Loop Antenna. Before transmitting I tuned that

Hi Skip, may I ask you a question ? What do you mean with B+ ? Unfortunately the voltage is not the same on all BS170 . I think thats not good. The IC5 is very very warm even during receiving ! IC5

Jeff ,? ?some digimodes cannot be amplified with a class? C amplifier. For instance? PSk31? has? an amplitude component and a? PSK? component. If you run it through a non linear amp the Rx at

It clearly uses 0/5V levels but it looks inverted compared to "normal" serial signalling at logic level. The first (leftmost) +5V pulse is the start bit which is always a logic zero, normally 0V. It

Just out of curiosity and as I did not like the looks of it, I re-did the T2 trifiliar :) Numbers grew a little bit on the Y axis of the graph but almost no change at all on the filter shape I see on

Hard work,? I noticed, that IC5 is very warm almost hot, also during receiving. is that normal ? The voltage is not the Same, testing the four BS170. Could the IC5 be damaged in addition to the BS170

Dennis, Section 6.6 of the manual says it is for the BPF. It also shows a "bad" result that Hans dismisses. Obviously a low LPF will also affect it. A low LPF would show by low power output on an

Hello Rich, I happened to hook up my KXUSB to my oscilloscope a while back. It went between 0v and 5v with it at 0v when idle. I am not sure what the QCX Mini is expecting, but it may be expecting 5v

Mine arrived today also. I estimate that it took me about 4 hours to build. I'm happy to report that it is working great so far. I built mine for 9v power and am getting 4-5 watts on all bands tested

And it’s the perfect size!! Nearly identical to a RaspberryPi. This os going to be fun. Don W6CZ DM07bk

One other thought before sleep.....it could be that heat in a bad connection is causing the flickering. But I have found it it's a bad connection with heat it will cause other issues. As I go through