开云体育

I’ve been using my Weller WSD81 station set at 375C and a 1.6mm chisel bit with great success. I've built quite a few QRP Labs kit, with last week a QMX+ and a QMX 20-10. On previous builds I’ve

I've just started building my QMX+ kit and what I found was that I needed an indicated temperature of 440C to burn the enamel off. My normal 380C barely touched it.? I'm using a WEP 926 LED soldering

Plus PTT output doesn't work properly. Nothing changes there when I start TX. BR/Sergey UB3AZK

Hello Hans! Looks like there is a bug with SWR measurement during usage of PA. QMX detects very high SWR during TX threw PA and stops it (if protection is switched on). In reality SWR is 1.1

Menu -> SSB -> Input -> Ext. Mic But it sounds like your mic cable is wired backwards.? Mic signal needs to go to ring, ptt to tip.

Just updated my QMX+ to 01_01_003 Beta. Plugged a modified Baofeng mic into the front panel and tried running the microphone test. It doesn't seem to work. I can tap on the front panel, and that

Thanks Evan and Nate! I found the threads and an answer of Hans in an older conversation: My Bpf simulation is too simplistic. Impedance and the environment have a big influence. 73 Peter DL4PJ

I would guess that 100% of the QRP Labs kits are shipped with some manufacturer's thermaleze equivalent wire. I would further guess that a very, very small contingent in this group would use their

I started from scratch and got it working. As everyone suggested, I needed to do a better job removing the enamel from the P wires. Additional heat did the trick. Thanks everyone!

Hm, thanks Stan. I ran the auto calibration the other night so that's fresh. I can reliably get level 5-10 on receive, but it doesn't seem to get out of level 1 or 2 on transmit. [email protected]>

No, it doesn't necessarily happen every time the radio keys, but it does seem to happen at least once per VARA/Winlink session. [email protected]> wrote:

Peter, I recall some discussion about this in QDXs maybe in the past...and some thought that the impedance is NOT 50 ohms, and/or, not acting like it on that input....... Keep us posted with what you

When I use screen in Linux, sometimes the terminal window is slightly out of shape and the mic tests does what you're describing.

Hi Peter, Here is an LTSpice XVII simulation for the QDX High-Band filters. I've included a PDF printout in case you don't have LTSpice. 73 Evan AC9TU

This probably some configuration with my terminal emulator. When running the mic test I get the bottom row. However, it does not scroll up. So I don't see the history covered on the beta firmware

Hi Russ and Stan.? thanks for the support.? I do seem to have proper resistance between VCC adn VDD and ground.? I have ordered new boards (and in fact a whole new QMX kit just in case). I also

I agree that would have been easier... but it's done now LOL... I agree, if I need to do it again, that's the plan. I am happy to report that the quadruple BS107 transplant seems to have been

When I use my Hermes Lite 2 or a Tiny SA it appears that my audio goes way beyond 3 KHz on USB for example both above and below my center frequency. However checking on a remote WebSDR I see what

Today I soldered the original BPF configuration into my QMX 20-10. Preliminary I bypassed the 20m LPF, and I left out the two other LPFs. I configured all bands to use the LPF bypass and can sweep

Try tightening up the ring contact on the 3.5mm jack. If you reach in with a very small barrow blade screwdriver you can bend that contact out to place more tension in the plug for a more reliable