Down the Rabbit Hole
The Ten Tec Triton I/II transceivers were released in the mid-1970’s and marked a milestone in High Frequency (HF) radios. With coverage for the 80, 40, 20, 15 and 10-meter amateur radio bands, 50 to 100 watt output on SSB and CW, they may have been the first affordable, fully solid-state models.
I’ve been a Ham for over 45 years, but have never really gotten comfortable with Morse Code. Sure, I was able to pass the code requirement when I first got my Technician and later Advanced License, but my CW chops were always shaky at best. I had been more interested in building and modifying equipment anyway, so it didn’t seem like a major deficit.
I look at Ebay from time-to-time, and lately I’ve been having a little too much fun. A Ten Tec Century 21 CW Transceiver (model 570) attracted my attention recently. The “570” was a solid-state radio intended for Novice hams and covered five bands: 80, 40, 20 (and with accessory crystals) 15 and 10 meters.
I began to haunt flea markets and old book and record stores looking for vinyl treasures. I still had a decent turntable, and had recently upgraded the cartridge, but my phono preamp was at least 10 years old and not the best to begin with. It sounded ok, but the next logical upgrade was a more serious audiophile phono preamp.
Restoring the Freshman Masterpiece AM radio was a lot of fun, but using batteries wasn’t. They’re convenient for testing, but expensive for regular use. The “B” battery alone uses ten 9-volt batteries, and that’s over $20 per set. There are battery simulators available for old tube radios, but they’re not cheap either, and where’s the fun in just buying a plug-in power supply? Wouldn’t it be cooler to use solar power and a 12-volt rechargeable battery?
I mentioned finding two old 20’s-era broadcast receivers in an earlier post. Some months had passed, and restoring the Freshman Masterpiece “5F5” seemed like a fun project and a quick win. The radio was designed to run on two batteries: an “A” or 6-volt battery for the tube filaments and a “B” or 90-volt battery for the plate voltage.
Ikea makes a wonderful work light (JANSJÖ) that sells for about $13. I have several of them, and love the warm pool of light they…
It’s been nearly two years since a pair of classic old shortwave receivers followed me home from California, and they have been staring at me each time I enter the shop ever since. Neither are functional, and both are daunting restoration projects. I wanted to revive some of my old vacuum tube chops and collect some vintage test equipment before diving into these beauties.
The annual San Antonio Radio Fiesta was a few weeks ago, and I inadvertently purchased a few radios. That wasn’t my intention, but circumstances got the better of me. — I should explain.
Christmas gifts for my two great-nephews are always a challenge, and with one entering the first grade, I wanted to up my game a little. The standard Lego-based gifts are always popular, but I sensed that something more involved might be a real hit. By the time I was in Grade School, I was fascinated by all things electrical and radio, so why not give them a crystal radio?