Quote:
Originally Posted by Skywave
Kalee20 - thank you.
Your post causes me to ask you this: if such bandpass filtering was such a worthwhile feature with all the benefits it provided, why did some radios (of this vintage to which I have referred) use a valved RF amp. instead?
Al. / Apr. 23
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The most likely answer is that an RF amp with its own tuned circuit gives even better performance but at extra cost. The fact that bandpass tuning was uncommon in later lower cost radios with 465 kHz etc. IF shows how cost conscious at least UK manufacturers were - they couldn't justify the extra cost of bandpass filtering and its required 3 gang tuner.
John