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Reviews Categories | Transmitters: Commercial/Military/Marine adaptable to ham use | TMC (Technical Materiel Corporation) Portable Master Oscillator Help

Reviews Summary for TMC (Technical Materiel Corporation) Portable Master Oscillator
TMC (Technical Materiel Corporation) Portable Master Oscillator Reviews: 1 Average rating: 5.0/5 MSRP: $(missing—add MSRP)
Description: The TMC PMO (PMO1,2 and 3) is a crystal calibrator, frequency meter accurate to 1 Hz and low power CW exciter, all in one unit.
Product is not in production.
More info: http://
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VE7IG Rating: 5/5 Jul 27, 2012 08:18 Send this review to a friend
Good old tube VFO or exciter.  Time owned: more than 12 months
These units came in 3 types. PMO-1 is portable in a carrying case, PMO-2 is a 19" rack model and PMO-3 fits in a cabinet. Otherwise they are the same unit electrically. The basic unit covers 2 to 4 MHz with a doubler to cover 4 to 8. It has 2 ovens which cycle and keep the frequency constant after the warm up period. The output tube is a 6AQ5 running a few watts out. I have had mine for over 40 years and only replaced a ballast tube in that time. I used it with a TMC Navy receiver as an outboard VFO on 80m CW and it worked very well. I also used it as a VFO with a 125 watt amp on 80m CW. It has a key jack on the front panel for keying. Mine is the PMO-1 but PMO-2s are currently available (July 2012) at Fair Radio Sales for $125.00. For anyone who enjoys playing with old tube gear this is a great piece of surplus equipment. I recently dug mine out of the basement junque box and will soon have it driving a solid state amp for fun!

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