UY-807 pp AM modulator
Arround 1985's, I had pland to make homebrew High Power AM system. This modulator, worked with 30KD6 x 3 Final unit and 4CX250B Final unit, was a one of main equipments for the project.
Left upper on the front panel is VU meter, three pilot lamp on the right half are for POWER, SEND, and WARNING for High voltage protection.
Knobs below are OUTPUT POWER SELECTOR and MIC GAIN.
You can see 2 of UY-807s right corner at the picture.
Behind the 807s is FAN.
Transformer in front of the 807 is for input transformer for 807 B2 class. This transformer roots to modulation transformer for TX88D by TRIO(Kenwood) corp.I planed to have a enough power for power supply. More than a half of the chases are occupied by the power supply. Left corner is transformer for High voltage. Left hand side of the LUX transformer is power supply transformer for middle voltage.
2-ST tubes in front of the 807 is voltage regulator for Sg at 807.After the earth quake in 1995, 30KD6 final unit is improved to Linear amp for CW, and I have new AM project "20meter AM sterea using C-QUAM". Receiver for the project, CLICK HERE....Bottom View
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