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Billy, et al, If you are going to continue building kits like this you definitely need this: Optivisor Binocular Magnifier micromark.com There are cheaper versions elsewhere. I kept my two units when

Chris and Mike Thank you for your input, it is much appreciated. Today propagation is s**t so good time for tinkering with radio gear. I will report later on

possibly either a duff jack socket or duff phones..

Interestingly, they are cheaper in the USA but its a UK based Welsh company.. Rip-off Britain again !

Here’s how I’ve protected the BS170’s with Zener diodes with no side effects as far as I could tell. It’s been reported here before, but I hope it’s OK repeating

Morning Hans, I am trying to reset my QRPLABS password. However, I dont get the email... An email with a confirmation link has been sent your email address. Is there a known problem currently with

There is such a solution, please refer to /g/QRPLabs/message/108946 With this mod, the QMX will be immune to input voltage steps, and I believe it will not confuse the software

Dear Paul, Thank you for that clarification.?? 1N4148 across the choke? with the cathode towards the 12V lead.?? OK? I got it. Take care and have fun.? Happy Labor Day weekend 73 Dave

Brainstorming. Don't have the schematic in front of me... How about if something were added to rob the SMPS of drive, when that rising voltage transient occurs?

"There was mention of putting a 1N4148 across the choke but was confusing as to which way to mount it" David-- Cathode towards Vcc! Paul -- AI7JR

Forgot to mention that I am getting about 5W out when I transmit ("T" key) from the hardware test Diagnostics screen. And I also did a Factory Reset (for the first time), and that has not helped;

Perfect! And you didn’t even have to mod your board to “fix”. -Mike/w1mt

Hi Mike, I share your pain.? Mine seems to be blown too, but instead of grounded, mine is sitting at 2.48V.? This is not so bad as when you press the left encoder, it powers up and stays up.? It

So after a month using my QMX with great success. However, it's now broken ;-( ... likely due to this current discussion. It was powered up, not transmitting, and the power cord going to a 12V trigger

Dear Group, I am just finishing up 5 QDX's ..... 3 Rev 3's and 2 Rev 5's.??? I have been trying to follow this thread but it is a little confusing as to what modifications really help prevent

Hi Adam, the short answer is yes for most cases. ?For example, if you use the WSJT-X tune function the actual frequency is the set point (7.074) plus 1000hz. ?For CW the dial frequency is the

It's still a trick, albeit a passable one. Not much more than line scanning or TV PAL where you can send signals fast enough to appear to the human eye as a continuous sequence as to appear

Stephan Ahonen KE0WVA <stephan.ahonen@...> wrote: Can you (or anyone) recommend a book or article that would show and explain it? I'm curious and would be happy to finally understand the

I would say yes solder it in. Whether it makes a difference, I've seen stranger things. -mike/w1mt