13-07-2018, 03:07 PM
An early production Pye P123BQ. This example has a full set of Newmarket transistors. The performance of this receiver is outstanding on LW but a bit "hissy" on MW. Back in the fifties I bought those surplus "red spot and white spot" transistors and some examples were very noisy, but they were cheap compared the Mullard OC71 and OC72. The P123 BQ and the PAM 710 use a non standard IF, 315Kc/s.
Geordie McBoyne.
Geordie McBoyne.