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It's called Blu Tack here too and it's available in some hobby stores. There are a number of similar things available that are basically the same thing as well. W0EB

The "Ringing" Yes I hear it, I think I'd call it a "back-wave" reminding me of the days when the oscillator stayed on and the final was keyed.? During key-up periods, the oscillator could be

One should always consider static discharge with working with components. I'm lucky: My workshop is in the basement and I could run two cats together and never get a spark. Jack, W8TEE To:

Yep I do what Tim and Hans suggest as well. I can still see the burn mark on my finger end. Who cares the pin is perfectly vertical!!! I once grabbed the soldering iron without looking and got the

A new chat has been created: Anybody have a suggestion? I am out of ideas for troubleshooting my power amp. Visit Now: /g/QRPLabs/chat/569

I agree with Tim. I just hold the pin in my fingers while soldering it. Teaches you to be quick at soldering the pin. If you aren't, it teaches your fingers to eventually get harder than

Hi Steve This is one situation I’ve been considering myself after burning my finger doing one of them on my kit.. I ended up by making a small tool of wood, 4 matchsticks bound together with the

I hold the pin in place with my finger while I solder the other end. It gets hot but only for an instant. You can put a bandaid on your thumb to help protect it from the heat if you like. Be

Blu-tack. I don’t know what it’s called in America but I find it invaluable for holding components in place while assembling PCBs. https://en.wikipedia.org/wiki/Blu_Tack

I use the tape thing for resistors, sockets and such, I also use the thin foam used to put ICs into as a padded cushion on tape to apply pressure to whatever is being soldered. Sent by me

Try a piece of tape on the circuit-side, holding the header in place. To: [email protected] Sent: Saturday, January 13, 2018 4:11 PM Subject: [QRPLabs] Soldering one pin headers What is the

If I'm understanding the issue correctly, I hold single pins in place with a piece of Scotch Tape on the other side of the board. Jack, W8TEE To: [email protected] Sent: Saturday, January 13,

What is the trick to soldering the one pin headers in the QCX kit? For multipin headers, I tack one end to hold the header in place, and then solder the other pins. This doesn't work for single pin

Yep, just saw that here too.? Running 20m WSPR now. To: [email protected] Sent: Saturday, January 13, 2018 3:22 PM Subject: Re: [QRPLabs] ZL1RS balloon flight - BB04 Looks like data coming

Looks like data coming in now ? Good to see it back again :) Jim

Thanks to QRP Labs for timely fulfillment of missing parts on the first shipment, successful construction and testing of a QCX 20. Now I have to scare up a suitable antenna! Tom Werner N7LRT

Thank You Alan, I have ordered 2 of these boards, if I’m successful making it work I’m going to stock up on these little boards. I plan to build up many prog rock kits. 73 Sir, de Seth -

Many thanks Wolfgang. Your reasoning and accompanying scope traces make very good sense. They much appreciated. I would like to know what scope you use. It produces excellent traces. I decided to try

TrueBlue, I have one U3S with three BS170s putting 1/2 watt into a 50 ohm dummy load at 5 V and 1 watt at 9?V on 40 meters.? I did put tiny self-adhesive heat sinks on the BS170s, but they run very

Seth, "Best" is your decision. My way would be like https://sites.google.com/site/g4zfqradio/progrock_update#Serial made permanent but perhaps that would not suit your purpose. Yes, USB 5V could be