Ron Wagner <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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I personally like the 1974 QST SSB Crud-O-Ject. It drops out hum I never
knew was on the audio of the TR7, and narrows just enough. Works out well
for me, and totally passive. Only issue is finding the 88mh coils now
days. But if you watch at hamfests, they come by for next to nothing.
One big negative compared to your filter is only one bandwidth.
73,
Ron WD8SBB
On Mon, 25 Jun 2007, Carel PA0CMU wrote:
Hi all,To improve the audio response of the TR7, Rien PA0TRT designed a
switched capacitor lowpass filter using Maxim's MAX7400.You can read all about
it on the Drake page on my website.For a direct
link:http://home.wanadoo.nl/cmulder/drake.htm#bookmark7Some pictures of the
filter will be added soon.73,Carel - PA0CMURien - PA0TRT
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