开云体育

First, I strongly suggest you supply 12.0V or less, Hans has been pretty clear on this point. Having said that, you are getting well over double the power with less than double the current (without

Timothy, You might find the class of ADSL line driver chips interesting for high bandwidth, high linearity and modest power output applications. I think they would make an excellent amp for

Thanks Ron, my other radios (K1, TS830s) don't have that issue. It is the same on a battery which is why it's so puzzling. It's likely something simple and I will try your other suggestions later this

Sounds a bit like 120hz Dave VE3KCL

Wow! So you say that noise is not present when you use a dummy load? Try a short piece of wire for antenna (receive only) and see if you hear the noise. Try a battery supply and see what happens. Try

Ron, here is a sample of what I am experiencing with my 20 meter QCX Mini. Both receive and when keyed.Doug WX7J?Sent from my T-Mobile 5G Device

Thank you Yury... Good to know... 73 ... Ron

Forgot to mention that I only have measurements that can be compared on these 3 bands as I forgot to make a note of the other bands before modification

T1 RWTST winding 20m / 6.6Watt / 12.8V / 0.89Amp 15m / 6.5Watt / 12.8V / 0.86Amp 10m / 6.0Watt / 12.8V / 0.75Amp T1 Original winding 20m / 2.5Watt / 12.8V / 0.55Amp 15m / 2.1Watt / 12.8V /

One more thing to try is to power the QMX via a battery and connect dummy load to antenna to rule out ground currents causing the issue. And also without the QMX connected to a computer (if that's

May I extend this thread to include the sequence of T507 installation? Building QMX Rev 1 the toughest problem I had was installing T507.? I followed the assembly instructions sequence. Getting

I have to warn about using capacitors with the latest revisions of QCX mini. Previous my QCX mini 40m had OPA2277 and solution with capacitors to ground for audio worked well. The latest kit Rev3 I

The 10 MHz signal you're seeing is the default that's programmed into Bank 0.? To program the ProgRock2 you must use a fully wired USB cable that's meant for data transfers.? You can't use a USB

The #1 cause of the ProgRock2 not responding to a USB connection is using the wrong USB cable.? You can't use any USB cable -- it has to be wired all the way through for making connections and

Modem manager is disabled? From User Manual: sudo systemctl stop ModemManager sudo systemctl disable ModemManager sudo systemctl mask ModemManage

Device Manager does not even show an "Unknown Device"when you plug it in? Try other USB leads, all USB ports, another computer. 73 Alan G4ZFQ

Update:? ?The prog rock is working. 10MHz output at roughly 4vpp. Still cannot get the pc to see it so I can program it.

Hello, I am now having an issue when trying to start up my QDX that is connected to my Linux laptop. The usual QRP Labs sound cards for input and output are no longer found when setting up the audio.

Hi I just received the progrock and I installed the drivers on Win 10 and the usb does not see the progrock.? It is running a little warm and I put the scope on it and no output. Tried to use putty,

Yep, I did the steps in the order called out.? Worked fine for me. Benton 6mar24 NX7O