[GreenKeys] "Filterless TU" in QST

Sat, 22 Mar 2003 06:56:20 -0600

I remmember building one of thease in the early 70's, can't remmember how it
worked as I was building a diffrent TU everycouple weeks. If someone comes
up with the article on this I would also like a copy.
Maby a good reason to get them years of QST on CD.
Wayne Letourneau

----- Original Message -----
From: "gil smith" <[email protected]>
To: <[email protected]>
Cc: <[email protected]>
Sent: Saturday, March 22, 2003 1:11 AM
Subject: [GreenKeys] "Filterless TU" in QST

> Forwarded on behalf of Jack Hart <[email protected]>
>
> (Jack:  you sent this from a non-subscriber address -- I usually just
> approve these, but hit delete by mistake -- gil)
>
>
> Does anyone remember an article in QST, sometime in the
> 60's, which featured a "filterless TU" for RTTY? It
> had several tubes and supposedly could copy any
> shift. I recall trying to build one, but it didn't
> work (maybe my junk parts from old TV sets weren't any
> good!). I'd like to get a copy of the article.
>
> Thanks,
>
> Jack WA2HWJ
>
> NNNN
>
>
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