[time-nuts] AGC or manual attenuator
xaos
xaos at darksmile.net
Fri May 29 14:09:12 UTC 2015
Hello everyone,
In the past there have been several posts about
amplifier input and AGC. As many have pointed out
this is always a bad idea since the AGC circuit
tends to add phase noise, etc.
So my question today is: Is this still true?
My old Panoramic spectrum analyzer (yeah, she's a beauty!)
has a very nice input attenuator which you select
manually.
Is this my only option? Digital pots don't usually go above
1 MHz, and if they did, are they an option?
George Hrysanthopoulos, N2FGX
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