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Old 30th Oct 2018, 11:52 pm   #21
Guineafowl
Tetrode
 
Join Date: Sep 2018
Location: Inverness, Scottish Highlands, UK.
Posts: 74
Default Re: Bush DAC90A sound problem

Quote:
Originally Posted by Northyorks1 View Post
David and John are both mentioning potential issues with the IF stage, bit beyond me. Is the IF stage the output of audio. Sorry for limited knowledge, but thats why I am here.
IF stands for Intermediate Frequency. The radio converts any signal you tune it to to this frequency, which is 465 kHz for your DAC90A. This allows a very focused, optimised handling of the signal which would otherwise be very difficult, given the very wide range of frequencies available to the aerial. Look up ‘superheterodyne’ for more info.

The IF stages are the two square cans with the valve inbetween.
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