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for AM contacts on the amateur radio band of 75 Meters, specifically 3870 kHz, which is a long-standing popular frequency for AMers. The TMC FFR receiver was introduced around 1956 and is designed to operate in a commercial setting, 24 hours-per-day.
It requires a complement of eight plug-in tuners to cover the full frequency range of 50 kHz to 32 MHz.
Each tuner contains the two RF stages, mixer, local oscillator, and one fixed-frequency crystal option as well as
a provision for an external VFO. The main frame contains three IF stages and the detector, audio, and power modules.
The FFR can receive AM, SSB, CW, MCW and FS signals.
Several specialized accessories were offered and remote control and diversity operation is possible.
It contains 15 tubes (5 tubes in each plug-in tuner) and weighs 35 lbs. The history of TMC is not as well known as Collins Radio, but its products rank among the finest HF equipment ever made.
It deserves more research. I would appreciate further information and links. ---Links to all five TMC units in this project---
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---TMC GPE-1A AM exciter---
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---TMC PAL-500 linear amplifier---
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---TMC PAL-500 power supply---
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---TMC FFR receiver---
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---TMC SBE-2 AM/SSB exciter---
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| W6SHF TMC collection | K4LNL TMC collection |
| K4OZY Repository of TMC manuals | K4OZY Repository of TMC brochures |
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Copyright © 2007 H.A. Layer, all rights reserved