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One tricky thing is that some radios won't easily accept CAT commands that are typed by hand into a terminal program. They require that the commands be sent in a single burst with no pauses between

Hi Karl On the IC-7300 yes. When properly attached to a PC you will see an audio codec (sound card) and 2 serial ports. eg comx under Windows and something like /dev/ttyUSBx or /dev/ttyACMx under

Ta-da!? Shorted cap 301.? Greg, thanks for you help and encouragement taking me somewhere I was hesitant to go.? A friend brought an iron that functioned as heated tweezers to our club Saturday

Stop right now. I recommend you go to Amazon and order some low melt solder, fine solder wick, and some solder paste. Search on ChipQuik to get started. You are not going to get anywhere good

I had a very similar issue, just fixed it last night. T507 was the culprit. Had to pull it, sand off enamel and reinstall. Took me from heartbroken and downtrodden to ecstatic! yes it’s annoying

John, a quicker solution that doesn’t risk damaging the board is to simply solder that particular lead to the top side of the board and let the plated-thru hole take the connection all the way

Solder suckers work, de-solder braid works Tinning the leads of the new component, heating the PCB and stabbing the component leads one cat a time into the hole is also under-rated for coils etc if

Here is a quick comparison of the waterfall in WSJT-X on 20m today with the QMX and my QDX.? The QMX wasn't picking up any european stations, but the QDX saw a lot.? This is the only overlapping

John, First off do not drill the hole out as you may remove a connection from one copper layer to another on the board. (Connections are internal.)? I don't know what soldering tools you have but I

John, What I use is a combination of liquid flux (not acidic), desoldering tape, a needle (preferably stainless steel so it does not stick to the solder) and a solder sucker. It may need several

I'm building a QMX and I'm not very experienced with this sort of thing. After I soldered in the L401 inductor, it did not pass the continuity tests - so I decided to remove and re-wrap the toroid.

Will PuTTY work with other tranceivers? I looked it up and explanations are way above my understanding. Would like to see it work on IC-7300, RS-918 (mcHF clone) and a Malahiteam DSP-2. Actually, any

Thank you both.? Unfortunately I can't find any soldering issues.? ?I have more wire coming tomorrow as its most likely a winding issue at this point. 73

Hi Evan, what do you mean with "SWR trip notification" ? (sorry for stupid qustion) Today I tested indoor (because of the weather) with dummy load and USB3 instead of USB2 cable and other

Hi Bryan, In addition to Greg's checks, verify that you do not have a solder bridge around the BS170s or L502.? There is a construction issue somewhere around the PA section. 73 Evan AC9TU

Nope. The A to B test should be open, no continuity between them.Double check that the windings are correct and the right wires are in the right holes. Yahoo Mail: Search, Organize, Conquer On

Sorry for the delay in responding? I'm expecting my WinKey mini on Monday. Hoping to get it working with MP40. Never could do Morse in my head,? but I sure can type. I think I read where the WinKey

I just got my Rev3 board yesterday and I was doing the continuity checks as per the manual on page 31 and it specifies no continuity between the A points and B points but I'm getting a 800 ohm

Hi Thorsten, The supply listed is adequate based on the supplied power, according to the specification.? It may be noisy as it is a switcher, but otherwise, it should not cause the QMX to drop

Hi all, I just finished building my QMX rev3 high band and completed all the sweeps in terminal. LPF results are relatively okay, but the results of Audio filter, RF filter and Image are not so good