YO3HJV

01 November 2021

Thank you!

Silently, my blog got over half Million visitors since I began counting and over 1 Million views since the first post, 10 years ago.

WOW!

To all of you, Thank you for the visit and I hope you got something helpful and interesting here.

To those who commented and never got an answer, I am sorry I missed the comment but the gmail algorythm made a lot of those comments go into spam folder... from time to time I check the comments and I saw some made a few years ago... Please, use the email if there is something where time is important. use mycall @gmail.com

73 de YO3HJV

30 October 2021

QCX CW

YO3HEX, Dexter gave me a nice present!

A QCX CW pocket transceiver.

It is able to put around 4-5W into one band and it is working only CW.

It was an awesome project for an afternoon and, after some 4-5 hours, the radio was ready, tested, the fine tuning made and on the second day I already made two CW contacts!

Here are some pictures from my work:

An eagel eye will notice the OpAmp misplaced (the right-side one).

One ferrite toroid snaps. Broke in three parts. Fortunately, I got a lot o this Type 2 toroids. Unfortunately, they are at my second lab, too far away for a lazy ham like me...

This is why I used ol' SuperGlue..

The project is completed. The OpAmp, still upside down.

Powered the TRX, current surged to around 1.5 Amps. Fortunately, I start all my experiments on my special design lab power source so no irreversible damage occured.

I found the fault pretty easy, the area was warm. I took out the OpAmp, put instead a 2x4 socket to check if the original circuit survived.

I took the time to change the LCD with a Yellow-Green one and the original contrast trimpot with a 10KOhm one for a better range of contrast.

After I put the circuit on the right position, there was no damage so I took out the socket and placed the OpAmp directly on the PCB.