Amstrad CB901 CB27/81 Uk FM CB radio (Japan version) - repair & re-alignment.

Описание к видео Amstrad CB901 CB27/81 Uk FM CB radio (Japan version) - repair & re-alignment.

Here's a nice Cybernet 002F chassis radio, presented as the Amstrad CB901 & kindly donated by a viewer. Thank you.

Apart from the case mice, the radio is in good condition for 40+ years old (and a missing knob). Upon working on this set, it was discovered the 10.240Mhz reference crystal had dropped to low to be in spec any longer. I also found that the FM detector coil was seriously out of aligment: this would have made the receive either garbled or very quiet depending which way it was out.

After tuning I ended up with 3.9W on transmkit & 0.7uV for 12dB SINAD on receive.

Recorded 11th September 2024

Richard, G0OJF

Lincolnshire, UK

(C) Tango Systems Group 2024

[email protected]

Ebay stuff https://www.ebay.co.uk/usr/g0ojf

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