Are we talking about T1 and T2 in the 50W PA? Thanks, James/KB7LJP

I can install both transformers, just not in the "over/under" way that is described in the instructions. They will be sort of backward, but still neatly installed. Will that matter. (I am hoping

Hi, John - I've used the "solder blob" method exclusively, since stumbling across a "how to" video a number of years ago, as I was just getting underway assembling an Elecraft K2 (lots of toroids to

Wonderful contact nonetheless. Someone with too much time on their hands can consider the distance squared relationship to path loss, making result more amazing. Sure make some more contacts, amazing

3 element yagi at only 24 feet (HOA restrictions). It's a Cushcraft A3S.

Not exactly low cost, but mine has been in use daily for 10 years without any issues. http://www.ohr.com/wattmeter.htm

We learn from our mistakes, John. I've learned A LOT over the years that way (hi). Eric KE6US

So I did try to melt the enamel with the wire inserted in the PC board. That appears to be a bad approach. I have ordered some #28 magnet wire on Amazon. Will cut out T1, pull leads and clean out the

If one is terrified of nicking the wire then try a small piece of fine grit sandpaper to remove any paint or insulation. _._

Scraping is the most positive method, but carries the risk of nicking the wire and causing a weak spot. The only other acceptable way is melt it off with a solder pot or with a

The continuity checks will be different in circuit and out as several of the legs are connected to ground and hence windings will appear connected or shorted. I always scrape as it provides a higher

I finally worked up the nerve to solder the first component on my 20m QCX. T1.... I did not scrape the enamel. Instead went for the heat it up and melt it in place. That seems to have not worked at

Antenna?

Sorry, forgot to mention that I'm in the Denver, Colorado area. 73 de Bernie, KF0QS

Greetings all: My QCX's output is 2.5 watts on 20 meters. With that mighty signal, I worked S50R this morning (he gave me a 459 report), at a distance of just under 5,500 miles. Not too bad. :-)

Check the T1 connections. When checking each winding, be sure to probe the solder and not the end of the winding wire. Many of the issues with alignment are due to poor solder joints on T1. You can

Other than not matching up with the board layout as you found it does not make a difference which way they are wound as long as all the windings are in the same direction.

Hi Chris, I seem to have the same difficulty with my QCX and QLG1. I am not able to automatically calibrate the 27 MHz crystal at all. I know that it must be pretty close to 27,003380 because when I

Jorge, http://www.qrp-labs.com/qcx/qcxtrouble.html#receive shows the path. A scope helps but the signal may be traced with a diode probe or even a DVM if R43 is reduced. Maybe look for a bad joint in

Hi all Finished building my qcx ,the unit lights up and the menus work, but when i try to do the initial alignment there is no tone on the bfp alignment. Ive tuned it off not to damage anything. Has