开云体育

Hi Chris, Just for my understanding, when you say BS170 gate drive, is this at the gate pins, or IC501? I would only expect the clock to appear at the BS170 gates in transmit mode. I am not sure what

Jerry commented: “It would be interesting to see how high the voltage across the protection zeners can get.” I measured these over 14 sets of SMPS boards. The 5.6V 5W Zener is pretty solid at a

Hi Tom Couple suggestions here I run a QCX QRPp ?(1W or less) by removing two of three finals AND/OR? reducing ONLY Voltage to the finals I also run QRPpp (0.1W or less ) with the Ultimate3S

I'm not sure if you are aware of these indicators, which may help: When you tune or otherwise turn on tx from wsjt-x, do you see a small dot appear under the 'A' vfo indicator on the QMX? Or do you

Hello, I recently got my pre-built QMX+ and have had no success getting it to transmit on digital modes.? It took me a while to find a USB-A to USB-C cable that would do both audio and serial

It's always a good idea to follow proper ESD practices.? In winter, the cats here have learned to avoid me, as the freezing weather makes for dry air and static buildup, when I pat them on the head

It seems they are sold out now. I like this enclosure. I put it on my watch list. Dean - KC9REN

Larry Thanks for the good feedback. Was your ATU 10 an already built one or a kit? Paul w2eck

Thanks for the suggestions, Alan, what I see is that I can read and set the C2 value but this has no effect on what I see from the BS170 gate drive (a convenient place to look).? Changing the Rx

Phil, The resolution gets reduced quite a bit here, but once you redo T501, I would resolder the pin diode connections. Some of them look like the possible cold joints. Also, It's hard to tell for

Paul, I run the QMX with an ATU-10 for one primary reason. It only requires 1 watt to trigger a Tune cycle. The -100 takes 3 watts or so. With the -100 you must tune at near full power which I don’t

Stan, VMT for your help. My board is ver.2. It would make sense that D109 would be unserviceable, as many had that snag as well after using a 2.5mm connector.? I can try to lift D109 on one side, but

-- Phill EA5JHA

-- Phill EA5JHA

Well that went down like a lead balloon! Replaced T501 with a conventional winding for 9v rather than twisted sisters. No improvement, in fact the lpf sweeps are now awful. I couldn't screen print

" but I don't see the radio as a device like I do when I do the Update Firmware." That's because it only looks like a (thumb) drive when it's in Update Firmware mode. As soon as the firmware is in

pair of Form D relays triggered by PTT https://shorturl.at/pBXaf

Certainly! ?Here is the link: https://www.ebay.com/itm/156509090595 73, chris

Thx. Yahoo Mail: Search, Organize, Conquer Greg, WSJT-X and probably most other software will incorporate the required delays. 73 Alan G4ZFQ

On two of my three builds I lost a diode on one of the SMPS boards. In both cases I successfully replaced it with a leaded 1N4148. It was a bit tricky to find where I could tack on the leads with