[K3] [Elecraft] AGC THR and noise
Barry N1EU
barry.n1eu at gmail.com
Tue Dec 2 12:13:15 EST 2008
Barry N1EU wrote:
>
>
>
> Steven.Zabarnick wrote:
>>
>> I'm somewhat puzzled by the behavior of the AGC THR adjustment with
>> respect
>> to band noise. My understanding is that the AGC THR setting adjusts the
>> level at which the AGC is activated. Thus, I would expect when listening
>> to
>> band noise (QRN) that if the noise is activating the AGC, using a higher
>> number would prevent AGC activation, resulting in a lower background band
>> noise.
>>
> A higher number means that AGC compression begins at a higher signal
> level, so a higher number means you'll hear more noise.
>
Expressed in another way: ALL signals, including noise, >-115dBm will be
louder as you increase threshold from 2 to 8.
73,
Barry N1EU
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