[time-nuts] AGC or manual attenuator

[paul swed]

Absolutely a good answer. You could mess with lots of things. But the fact
is they are pretty much a mess. You have to linearize and right size etc.
So why mess with a great answer?
Regards
Paul
WB8TSL

On Fri, May 29, 2015 at 10:09 AM, xaos <xaos at darksmile.net> wrote:

> 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
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>