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Last updated 4-15-09
Hello and welcome to KM5TZ's website!
Here you will find some details of my vintage restoration and other projects ...
About me...
I was born and educated in the UK... I used to be G4CYH about 35 yrs ago. I lived in Texas for several years (hence the 5 call) but I now live in Del Mar (near San Diego) in California. I am an Electrical Engineer by profession and have spent most of my career developing microwave telecommunications products.
I enjoy both building my own equipment and restoring vintage gear. I also repair and restore test equipment.
Me and some of my vintage radios (a few yrs ago).
This was one of my favorite receivers for a long time; it is a Racal RA-17L that I lugged back from the UK. I completely rebuilt this one and changed out the audio output section (stock output is only 50mW) for a 6AQ5. It has exceptional AM performance, one of the best I have ever heard. I went to work for Racal after graduating University in the UK but by then technology had moved past vacuum tubes.
The speaker above this receiver - It is an early RME speaker. The guy I bought it from said it sounded better than a Collins speaker and he was right - it really is a great sounding speaker for AM.
Here is some of my lab equipment; much of what you see was purchased as non-working and restored, repaired and calibrated by myself. I'm very well equipped for work up to 26GHz. You can see my SDR PA on the bench. I buy mostly HP and Tektronix test equipment; HP produces excellent service manuals and many of them can be downloaded free of charge from www.agilent.com . Repairing high end equipment such as spectrum analyzers is often not nearly as difficult as you might think - so long as you have a service manual and working test equipment with which to troubleshoot.
I have a couple of work areas:
The links below will take you to some of my past and present projects:
LCD conversion for TDS5, 6, 7xx scopes (Under development)
HPSDR (my new SDR) (ongoing)
SDR (Software defined Radio) (completed)
Tabletop Class E AM transmitter (80/160m) (completed)
Class E AM transmitter A big one! (Completed)
Homebrew AM Transmitter (4-125's modulated by 4-125's) (a project I started but never finished)
Collins 312A-2 (S/N 1 !!)
Collins 32V2 (Completed)
Collins 75A2 (Completed)
Collins KWS-1 (Completed)
Eldico SSB-100 (Completed)
Thank you for visiting!
Feel free to contact me at: KM5TZ@san.rr.com