TELETRON TE-712B

Technical data

This Pfizner Teletron HF receiver is labelled TE712B but it differs from the standard model. It only share a few parts of design with the standard TE712B which let us think it could be a prototype or pre-production model. It could have been designed in early 1974 according to the oldest IC date label. A lot of modifications have been made mainly to the logic cards and one can still see folding marks on numerous part of the receiver frame.

Here are its technical specifications:
- Receiving mode:
A1, A3, F1, USB, LSB - Frequency coverage:
Continuous 1Hz tunable from 10Khz to 30Mhz AFC (50Hz carrier filter BW) with 3 tracking mode: 100% carrier, reduced carrier, no carrier - IF:
IF1: 75Mhz IF2: 30Khz - Filters:
LC filters 75, 150, 300, 700, 1000, 1500, 3000, 6000Hz all modes 1khz audio filter IF2 rejection filter (27/33Khz) - BFO:
Fixed - CONTROL:
CAG level: manual, 5dB/s, 50dB/s, 500dB/s 30Khz output Antenna selection (1 in 20) Full remote control

Pictures

Front view
Rear view
Inside front panel
Upper viewFront view
HF Head UpHF Head Down
ZF UpZF down
Logic UpLogic Down
Filters UpFilters Down
Synthetizer cards
Replaced ICs and other components

Last revision: 2008/06/06