1) Tools: 35-45 watt Weller or Equivalent Pencil tip soldering iron Kester "44", .8mm solder M.G #452 solder wick ( accidents happen) DVM Rotating PCB holder KNIPEX 1511120 enamel wire stripper (Germa

Timothy, have you ever bought or built an amp from QRP Labs? Tell us your experience with the amp.Get in the back of the truck with us.

No sense involving Hans. I altered my building techniques. These are educational kits. I have received a lot of help from people on the net.

I trust the builder has not done this and has exhausted most avenues. The builder is clearly capable. You don't need an unlimited budget, Hans has made these extremely affordable.

Not necessarily Allison. You can partially burn a trace and reinstalling components and rewinding transformers may not repair the problem. You also have much more equipment and diagnostic experience t

Yes, I have built 10 or 11. I was working on improving my build quality and used them for the education. I wanted reliable methods so future projects would work first time. I made myself simple rules

In my situation with the same antenna it was RF getting into the power cable. It doesn't take much and when I used a short battery lead and changed out earphones it was gone. Earphone leads pick up so

This is a difficult problem and pretty depressing. I have had the same situation myself on one amp build. My conclusion was there was a fault in the board. A trace even a trace that looks good with a

RF may travel in paths you have not forseen. That does not make it black magic,

Mine was a faulty solder joint on IC pin. Now I alcohol wash before insertion.

The toroids are very good. I use them in making 49:1 antenna transformers for Half Wave End Fed Antenna systems where they also work well. Never had a bad one in 10 amps. That being said I have found

This is the same tone from the circuit that A nearby SDR will pick up. The nature of the beast.

The decoder does that by showing you what you are transmitting. You can turn that feature on in the decoder menu.

I'd leave it. Formally I would have gone nuts. But look what you did as is! Real QRP and it's all up from now on sunspot wise.

Walmart has suitable padded cases in electronics. They come and go....it's Walmart.

Hi Hans, I concede and accept the election results. The. BNC it is and less inventory. Now it will all use a consistent set of jumpers with the amplifier. I enjoyed all your videos including your retr

#poll-notice

Hi Steve, I like the trifilar idea. Please try it and report back! Thanks, George

I like that idea!

#poll-notice

OK. I am thinking the longer BNC with the threads could be substituted with one that is shorter and needs no nut and lock washer. Democracy is all about arriving at the best solutions...hee hee. It ma

#poll-notice

Good low profile solution, and they work fine for me. Used on SotaBeam tuners.