Codar AT5 amateur transmitter from the mid 1960's. - A.M. and C.W. operation on the 160/80 metre bands with an input of about 10 watts. Power units were available for mains or mobile (12 volts) use and a matching receiver (the T28) for mobile use. Valve (tube) lineup was EF80 Vackar V.F.O. - EF80 buffer/doubler - 6BW6 class "C" power amplifier - ECC83 microphone amplifier/modulation driver - 6BW6 class "A" modulator.
A centre-tapped modulation transformer was used giving very nice communication quality amplitude modulation. The Vackar V.F.O. gave very good stability, using an Electroniques inductor unit.