[ARC5] skn - Working Mark K3MSB

[Bill Cromwell]

On 01/01/2014 12:32 PM, Mark K3MSB wrote:
> Hi Guys –
>
> ---snip------
> Note to self:  review threads on improving ARC-5 selectivity and DO
> something about it…..
>
>
>
> Ronnie – do let us know when you’ll be on with your 274 so we can work you
> today.
>
>
>
> I’ll be on and off the air today as well.
>
>
>
> 73 Mark K3MSB
>

Hi Mark,

I can suggest an audio filter like the NEScaf that I use. The free DSP 
software that plays on your computer sound card is also very helpful. 
You don't have to modify your radio at all. Filtering at audio is not 
the very best solution because the front end is still subjected to 
strong incoming signals but it is a major help. I've used it with 
command receivers and the RAK-7. The NEScaf is easy enough to build that 
even *I* managed it. The DSP software is *free* and if you already have 
a computer with a sound card get Spectan and see how helpful it can be. 
It didn't take me very long to get on top of Spectran. Some software has 
an ugly learning curve. Spectran is pretty easy.

Spectran:

http://www.weaksignals.com/

NEScaf:

http://newenglandqrp.org/nescaf

I started SKN on 80 last night and my TX quit. I'm back today messing 
around on 40 meters (the TX is repaired).

73,

Bill  KU8H