[SignalOne] CW Filters

[scott]

Let me finish that now that we are out of the construction zone.......

I do wonder if I need to do the product detector mod, mine seems to be overdriven, when I back off the rf gain it sounds much better, but of course no avc action.  Or maybe there's a bad cap, but haven't had time to do a thorough look.

Other Than that I'm pretty happy for now.

Ed, wish I found an old PA70, but got a great deal on 374, which is close enough for me, tho I have to keep the CX7 throttled back to keep it clean.

Quite the dream machine, I just hope 10 opens enough to do a hundred countries on it this intr.

7 and thank,  Scott

Sent from my iPad

On Sep 17, 2013, at 1:28 PM, Scott McDonald <ka9p at aol.com> wrote:

> 
> 
> This list is for discussions regarding collecting, repair, use and sale of Signal/One radios and accessories.
> 
> Documentation on Signal/One radios can be found at http://www.hamanuals.com and several other sites on the Web.
> 
> .
> Thanks Ed I will take look back thru and reacquaint myself with that mod.
> 
> I do have a dsp59 in a drawer somewhere that may so the trick.
> 
> For the moment I am still finding the product detector annyng and may née to reduce the signal level hitting or just do the ps mod, I'm definitely speak
> 
> Make something good happen!
> 
> On Sep 17, 2013, at 10:53 AM, EDWARD SCHUMACHER <edwa9gqk at yahoo.com> wrote:
> 
>> 
>> 
>> This list is for discussions regarding collecting, repair, use and sale of Signal/One radios and accessories.
>> 
>> Documentation on Signal/One radios can be found at http://www.hamanuals.com and several other sites on the Web.
>> 
>> .
>> It's a nice thought, Scott, to add optional filters to rigs but be advised that in the case of the S1's it did not always produce better results. This is discussed in the old newsletters, the problem being that the filters were not always correctly well matched. Thus the more popular method of inserting the old MFJ audio filter which also was somewhat dicely depending on where it was actually inserted. My solution was to just utilize my homebrew dsp unit that I had leftover from my Paragon days. Not only does this give me several choices of audio width but it also adds noise reduction and auto-notching to the rig. The dsp noise reduction can be used along with the CX-7's noise reduction.
>> 
>> I did actually locate one of the old MFJ audio units at a hamfest for $1 just when I was first getting my CX-7 back operational and thinking of adding one if it could still be found. After rereading the discussions in the newsletters I was having some doubts and then the light came on and I remembered how well the dsp unit had worked with my Paragon. Problem solved. I would recommend seeing if you can locate any of the better old outboard dsp units as the S1's are pretty good up front as is unless you want to use it for a lot of contesting. Sorry so late in posting this but have been fielding a lot of other stuff of late. Hope this helps.
>> 
>> 73 ... Ed, WA9GQK
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