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Old 15th Oct 2021, 2:46 pm   #25
simpsons
Octode
 
Join Date: Feb 2007
Location: Harrow, London, UK.
Posts: 1,013
Default Re: Grundig 5399/u/s

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I've managed to find the Grundig radio schematic which shows quite clearly how the decoder socket is wired in your radio.

It is from the Grundig KS55,560,565 and 570 series of radiograms.

Use the Radiomuseum site as the schematic image is very clear.

There are some differences in the component values & the audio stage of the radiogram but, as with most Grundigs, you can soon see how their engineers built upon a good design incorporating the stereo decoder 4.

Hope this helps


Chris
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