开云体育

You'll probably find this strange but ... I was thinking about portable field use at 12V? power IN with a target of 10 Watts out, for just an extra 6dB (I know, just one S unit maybe, but a bit more

What do you mean by out? Which voltage at "+12V"? Which voltage at LIN_REG_EN when pressing the encoder? Please read QMX QMX_plus Startup ( /g/QRPLabs/wiki/36878 ) to see how start

Hi Doug, May I suggest to remove T1, cut the leads with a flush cutter and then remove the individual pieces left. Use a solder sucker and maybe some solder braid to clean things up. Also if you need

Dear group Took me a long time but finally I have finished a build of a Qmx plus rev 2 (my 3rd kit) and when powering it up nothing happens. so I start debug the power supply with the following

Gwen, Just keep using your wonderful rig and enjoying all those neat keys you have. SSB, especially CESSB is just a passing fad (I heard that somewhere someplace back in the 1960s). Use what works,

GMT +1? ?also known as? British summer time..? ?for the United kingdom..Scotty GI0BEY

Hi Jindra In SSB firmware 003 there's a bar under the 'A' when in transmit with audio. When in transmit without audio it would be a dot under the 'A' (top left character of the display, the VFO

Yes, we think we have discovered that if the Phase Error calibration does not complete (yours only went to about 600 on the x-axis), that the audio is corrupted, presumably because all of the rest of

Good point Martin, I forgot about it myself. So for (most of) us Europeans, it's at *15:00 and 21:00 CET* Luc ON7DQ

I have very bad audio distortion on 80m band with PD tuned on. With PD turned off, I'm satisfied with the audio quality. I think there's something wrong with the calibration. Here's my calibration

When you enter the diagnostics screen, the Tx voltage is turned off, so it can be tested and we can see it turn off and on. As soon as you exit the diagnostics screen, it turns back on. If you read

Ludwig, you were right. I measured the resistance between the terminals. All 4 BS170s were damaged. I guess the broken IC503's outputs were floating which in turn caused high current flowing between

Thanks. I didn't consider the termination. I did disable TX on those bands. But I'm going to install them to avoid any risk now. I have a similar one (identical functionality, but different shape).

Set the current limit to 250mA and the voltage to 7V until it starts up and works correctly in receive mode

My dad has a nicer power supply that does have current limiting. I can test on that tomorrow. What is the maximum amperage I should allow? I think I could replace the diode but if I can't my dad

Possibly, but it has not happened to mine for quite a while (so no opportunity to explore further) and my QMX has been working fine.? I did add some ESD mitigation and have not had any abnormal

Thanks Gregg, I could totally go that route as well. This is just for CW, and it's good to hear the values for the LPF kit worked for you (I already bought the bigger toroids and higher-rated caps).

Sam,? One other thought ... Another 50W AMP kit plus the nice enclosure is just under $46 plus shipping.? I ordered three and the shipping was the same as a single kit. Built one of them for 15m

It is a bit hard to test a zener, especially a low-voltage one in circuit. I just measured mine with the diode test function of my multimeter, and it measures 0.31V in one direction, and 0.44 volts in

Sorry, I didn't mean to send you down a long rabbit-hole.? I have no idea how to make airspy work, either.? Someone else here used NaP3, and posted the way they set it up, and that's what I have