[Boatanchors] National Select-o-Ject Question

[Carl]

The problem with doing it at audio is the AGC will be pumping away if your 
BA has that feature on AM and CW.

Ive never used a SOJ but other audio filters from passive, to tube and SS 
have always left me underwhelmed.

There was one automatic notch filter on the market 20+ years ago that did 
quite well at notching carriers but the audio sounded like s***.
So did anything from MFJ that I tried.

I still might have a DSP 599 or something like that on a shelf, forget the 
brand name but it wasnt cheap.

Carl
KM1H

----- Original Message ----- 
From: <w8au at sssnet.com>
To: <boatanchors at mailman.qth.net>
Sent: Wednesday, February 23, 2011 3:14 PM
Subject: Re: [Boatanchors] National Select-o-Ject Question


> At 02:49 PM 2/23/2011, D C *Mac* Macdonald wrote:
>
>>I was under the impression that the S-O-J
>>could also reJECT an interfering heterodyne.
>>
>>Not so???
>
> Yes, it can.  But if the interference is much stronger
> than the signal you want, your AGC might would lower
> the gain and reduce the leve of what you are trying to hear.
>
> w8au
>
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