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Who
says hams don’t build equipment anymore? Randy Henderson, WI5W, of Oklahoma
City not only built every piece of equipment in his station – including the
microphone – he designed it all, too! The
centerpiece of Randy’s station is at the bottom right of our cover photo – a
9-band, synthesized, microprocessor-controlled HF transceiver that boasts many
of the features normally found only on commercially-built gear. For example, his
rig operates SSB or CW, has 14 tunable memories, will operate split frequency
for those 40-meter DX contacts, displays frequency and mode and even has a
diagnostic mode that lets you check on some of the internally-generated
frequencies. Its power output is variable from less than one watt to 50 watts. Between
Randy and the transceiver is more homebrew gear – an 800-watt tube-type
amplifier on the table that also covers the nine HF bands, and a multiband
solid-state CW transmitter on top of the amp, which Randy says saw more use
before he built the transceiver. And yes, there is a mic in Randy’s hand (no,
he’s not talking to his hand) – it’s a noise-canceling electret mic that
he built into an old pill bottle! In
ham radio’s truest tradition, Randy has shared his plans for the transceiver
in a book he’s written, titled, Build
Your Own Intelligent Amateur Radio Transceiver (ISBN # 0-07-028264-1(p) ).
It’s published by McGraw-Hill and is available from most major bookstores,
including Amazon.com. Randy says designing and building gear is “a way to keep
my interest up. If I lose interest in operating for a while, there’s always
another project to build.” (Cover photo by Larry Mulvehill, WB2ZPI) |