[Swan] Re: 500CX and SS16 filter

[Mark Shaum]

Joe, I  have a 700 with the SS16 filter.  The filter is quite narrow,
and when first tried the audio on receive and transmit in USB was
shifted in the filter bandpass, i.e. too many lows and not enough highs.
Shifting the carrier frequency a bit took care of this.  Presumably the
carrier oscillator, filter center frequency or both drift a bit over the
years.

73! - Mark K9TR

Original Message -----
From: <swan-request@mailman.qth.net>
> From: "k7mks" <k7mks@attbi.com>
> To: <swan@mailman.qth.net>
> Date: Sat, 18 Jan 2003 15:53:47 -0800
> Subject: [Swan] 500CX
>
> Am using a stock  500CX w/ 16 pole filter & a Shure 444.  Have
received =
> comments off and on that the audio is a bit "mushy" but it does not =
> appear to be over driving.  Looks OK on the scope.  One W6 totay said
he =
> felt the final bias was incorrect although it looked fine to me.  He =
> correctly guessed I was using a Swan.  Any ideas, comments, or audio =
> mods that should be done would be welcomed.
>
> Thanks  Joe  k7mks