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The island of Crete in southern Greece was first heard on the air in 1938 when George Zarifis came on 40 metre CW using the callsign SV6SP. His transmitter consisted of a single metal 6L6 crystal oscillator with an input of about 7 watts. For reception he used an American CASE broadcast receiver in which he had fitted a BFO. In a very short period he had about 500 QSOs.
The transmitter was completely 'home brew', consisting of a metal 6L6 Franklin oscillator on 3.5 MHz followed by two more 6L6s doubling to 14 MHz. In the final amplifier stage Harry used a Telefunken pentode, the famous and very efficient RL12P35 which was used in the German tank transmitters in all stages, oscillator, P.A. and audio amplifier/suppressor grid modulator.
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