"Dear Oleg and All,
I was QRV today in the late
afternoon with one GF45011 transistor made by Western Electric in April
of 1961. This is the same Germanium transistor type that was used in the
original "Vanguard 1" satellite. I was very pleased to have received
this as a gift from Jack Ward; curator of the online, "Semiconductor
Museum."
My
GF45011 oscillator/transmitter produces 10mW on 21.060MHz. While
receiving this oscillator becomes my receiver beat-frequency signal
source. My Morse code keyer switches the 21MHz oscillator between the
antenna and receiver via a miniature DPDT electromechanical relay. The
single-balanced direct-conversion mixer, or product-detector, uses a
pair of 1N4148 diodes, followed by a two-stage audio amplifier. The
antenna is an end-fed 44m wire erected 10m off the ground.
I
was QRV too late to hear any DX signals today. I also did not make any
QSOs, but I hope to be on-the-air after breakfast tomorrow morning.
I wish you all the best of luck!
Beep-beep,
Mike, AA1TJ "
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