QRN or Something Else

SteveKH6CT
Posts: 9
Joined: Thu Aug 20, 2020 12:55 pm

Re: QRN or Something Else

#11

Unread post by SteveKH6CT »

Kriss...
Mine says 2088. Compiled 14 DEC 2020

73, Steve

User avatar
PD3LK
Posts: 517
Joined: Thu Aug 06, 2020 10:36 am

Re: QRN or Something Else

#12

Unread post by PD3LK »

SteveKH6CT wrote: Sat Feb 27, 2021 2:21 pm I noticed that too, Kriss. What I really don't understand is why I have an AGC selection on the ribbon bar (set to OFF) and also an AGC selection in the DSP panel (set to ON). But then, I grew up with "glass valves", so that may lead to my not understanding.

73, Steve KH6CT
The first one is the AGC for the radio hardware itself, mostly regulating the gain in the frontend and/or in the IF part of the radio.
The one in the DSP regulates the signal at the software side, not sure if this is still in the data stream or thereafter (demodulated audio).

User avatar
PD3LK
Posts: 517
Joined: Thu Aug 06, 2020 10:36 am

Re: QRN or Something Else

#13

Unread post by PD3LK »

btw i don't have a RSP1 so i can't help comparing, but maybe check if you are both using the same SDRplay radio selection in SDRC... v2 or v3?

User avatar
KA1GJU
Posts: 264
Joined: Tue Aug 11, 2020 2:16 pm

Re: QRN or Something Else

#14

Unread post by KA1GJU »

Just loaded 3.0.27 onto local machine here. Still no Radio AGC on/off on my SDRPlay RSP1A, via a server.
Server is still running 3.036
Will update it to 3.0.27 and see if it allows Radio AGC on/off

Kriss
73 Kriss KA1GJU Home of the KA1GJU Super Station SDRC Servers in NH, USA (FN42mw & FN43na)

User avatar
KA1GJU
Posts: 264
Joined: Tue Aug 11, 2020 2:16 pm

Re: QRN or Something Else

#15

Unread post by KA1GJU »

No change at remote site with v3.0.27 either.

Kriss
73 Kriss KA1GJU Home of the KA1GJU Super Station SDRC Servers in NH, USA (FN42mw & FN43na)

jdow
Posts: 800
Joined: Mon Aug 10, 2020 8:17 pm

Re: QRN or Something Else

#16

Unread post by jdow »

It's a front end thing. If your front end can support an AGC function internal to its box that can be controlled then you get buttons and selections related to it. The rtlsdr dongles are an example. Other front ends very sensibly avoid AGC and can, with effort, be calibrated and adjusted to favor low noise, high dynamic range, or compromises.

Into which category does the SDRPlay RSP1A fall? Maybe it should not show that selection.

{^_^}

Post Reply