The biscuit barrel
On 06/03/2015 09:32, gareth wrote:
wrote in message
...
An AGC range of only 20dB?
You could cascade 2 of them, that would give you 23dB ;-)
Don't know to what you are replying, but one such biscuit as the RF
amplifier and a series of them in the IF chain would provide the
desired AGC range.
A good RF amplifier would make a poor IF amplifier.
A good IF amplifier would make a poor RF amplifier.
I fear that you are incorrect in your calculation, for 2 in series
with gains variable from 0 to 20 dB will give a range of 0 to 40 dB
(Think about it the other way around with resistive attenuators, and
what you get with 2 off 20dB attenuators in series)
I think Brian was taking the pi$$
(We all know these are voltage amps, so he meant 26dB :-))
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