Uniden 200 late version CB27/81 UK FM CB radio - extensive repair
Автор: UK FM CB radio servicing
Загружено: 2025-10-28
Просмотров: 612
Описание:
Not good condition for a late version & clearly from a smoking environment. No PA or TX audio. Tansmit came in at 3.9W & it wasn'y difficult to retune the radio to do 4W & at less current consumption too. Usual four capacitors were changed, 2 x 220uF & 2 x 470uF. However, the receive was pretty deaf at over 3.5uV for 12dB SINAD. After changing two capacitors in the I.F., there was a tiny improvement. However, the big culprit was the 10.695Mhz crystal filter; replacement of swhich brought normal sensitivity at 0.86uV for 12dB SINAD. Lost of time wasted on unsticking the meter. A least it moves now...but not properly. In the past a wrong lamp has melted the innards to some extent. The failed meter lamp was replaced. Not commercially a viable repair.
Recorded 28th October 2025
Richard, G0OJF
Lincolnshire, UK
Ebay stuff https://www.ebay.co.uk/usr/g0ojf
[email protected]
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