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Hi Jim, I am using 4 x TN0110 in QMX. They are more forgiving by having higher voltage. I am running them at +14V without any trouble. But I am not taking any risk with VSWR higher than 1.2:1 hence

Jim, I have no source recommendation , just two comments: - TN0110 is identical to TN0106 but with a higher drain breakdown voltage: 100V v 60V - Both have a pinout which is reversed relative to

In my opinion. I think it is most likely that bad SWR resulting in high voltage transients is probably the cause of most BS170 failures.? The SWR protection may not be fast enough to protect against

Hi all From searching the messages, I find that the TN0106 is a preferred substitute for the BS170. Yes? No? Where's a good place to get 20 or so ... without buying counterfeits or devices with a

Yes, Ludwig that is an excellent question and one I have been puzzling over as well. I would be much happier if we had an answer to it and full closure. Perhaps we never will. VY 73 OM, JZ KJ4A

Hi John, and One question is open, the path of the fault current. It seems the current didn't flow from 5 V via IC503 through the "hot" BS 170 to GND. All outputs of IC503 were LOW. Via the internal

Roy, my rf scan for 20 m looks similar, 2 peaks (and a weak one). Tweeking it was the best I could get. The differenc between the value at 14,x MHz and the maximum at 10 MHz is only 2 dB or less. So

Hi Jake, I wonder if you have a scope at all? One of those sub ?100 ones on AliExpress would be a useful addition to the shack. I'd start by comparing signals from the 2 encoders, they should be the

Hi all, I am having trouble getting my rotary encoder to work on my kit-build QCX Mini. When I turn on the QCX Mini and try to change anything with the encoder, it will only adjust the value once

I have a similar problem with my Rev 2 QMX low Band i have just completed. Its working fine but I cannot connect to it using my HP2133 laptop running Window 7 Pro ( 32 bit) . It just wont connect or

I am trying to get my QCX+ to work with QRSS FSKCW and find that it keeps the carrier on for the duration of the frame. ?My frame is set to 10 minutes and my message is about 6 minutes long. ?The

I didn't have any success with improving the RF Sweep for the 20M band. I collapsed the last set of windings on L401 as depicted in the manual ... then moved them a bit, spread some apart all while

Sorry I didn’t get your email. ?Sometimes my junk mail filter grabs an email. Groups.io seems to not allow email addresses to be posted. ?Contact me privately here or I’m in QRZ. I’m on

I'm barely starting up with amateur radio. I intend to use JS8-Call which reportedly almost creates an oven. Reading everyone's take, I like your added heatsink and Zener diode best and I'm wondering

Hans, as for being a "mere mortal", be assured that you are not alone in that attribute. I could not help laughing when I read that. Jim VE4BWG

How do get a hold of Jeff Moore to get a QDX repaired? I've emailed the address in QRZ but no response, or is he just very busy/vacationing now?

Mike I was aware of the KY command (see msg #120347) what I wasn't aware of is that the QCX has it, as I said I don't have one. Instead, I use a winkeyer. Gary W9TD

Cliff <ae5zaham@...> wrote: The issue is when sending "AG;" string to read current gain. I'd expect it to return it in this format (hex added for clarity): "AG0054;" (hex: 41 47 30 30 35 34

Eeeck, Virus alert! Sorry couldn't resists. I hope all recover soon. -- Linux Home Automation Neil Cherry kd2zrq@... http://www.linuxha.com/ Main

Just take it easy and get well. Mike Krieger