On 17 Jan, Peter G. Juliano wrote:
>
> Hi Ten Tec Users,
>
> Well I will make another appeal--I am looking for the optional CW Filter and
> Noise Blanker that goes with the Model 544 (Digital Version), Triton IV. I
> really would like to have the CW filter as a first priority. Another option
> is to build the CW filter and stuff it inside the radio. I have not checked
> with TT yet; but does anyone have schematic of the TT CW filter. I believe
> it is an audio type filter and is designated as model 245.
>
There may be a source of those filters... Embedded Research makes
a clone of the audio filter for the Argosy and I suspect it is
equivalent to that in the Triton IV. BTW: I have a Triton IV with
audio filter and could check the schematic, etc. if someone has
the comparable info for the Argosy 224 filter. The Triton IV
filter uses four cascaded op amp filter stages to do the deed.
I checked it out a bit ago when I was seeing if I could access
the intermediate selectivity options in that filter.
Check out Embedded Research at
http://www.frontiernet.net/~embres/af224.htm
Good luck! K7GT
Allan G Taylor
agtaylor@llnl.gov
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