[Hammarlund] [National] National Select-o-Ject Question

[Kenneth G. Gordon]

On 23 Feb 2011 at 15:18, Carl wrote:

> The SOJ can help get rid of annoying audio hiss, especially on CW. In
> combo with a Q Multiplier it can turn an old BA into a decent
> performer.
> 
> My own preference is the stock xtal filter to notch, a Q Mult to peak,
> and a BC-453 to narrow the IF bandwidth. I have a small SS filter for
> the hiss.

I have several of the old SS CWF-2 audio-filters that work very well. MFJ 
sells a couple of versions of those now. So does Vectronics.

Ken W7EKB