[GreenKeys] ARRL Handbook TU Limiter Circuit wanted

[Matthew Greer]

>From "The New RTTY Handbook", 1962, here is a schematic that may be
relevant to your request. Seems to match the description somewhat.
Way out of my league here.. If it is of interest, I can scan more of the
pages that describe the circuit.
Regards, Matt

On Wed, Jan 20, 2021 at 1:24 PM Ralph Irish <w8roi at wowway.com> wrote:

> *Alf*
>
> *This might not be exactly what you specify below, but it might be of use.*
>
> *The Limiter shows cathodes both grounded, but is a different tube.  It is*
> *a dual triode, though.*
>
> *This came from the 1961 ARRL Handbook, the oldest one I own, other than *
> *one from 1939, and I didn't even bother to look there!*
>
> *Hope this helps some.*
>
> *Ralph - W8ROI*
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> *-   -   -   -   -   -   -   -*
>
> *On Jan 20, 2021, at 6:55 AM, Alf Fisher wrote:*
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> *Hi folks,Please can someone find me a scan of the the input Limiter
> circuit used in a TU in an ARRL handbook - probably around 1955 to1960.It
> uses a double triode (6SN7 or 12AU7) with its cathodes connected together
> and the output is taken via a transformer.I have an article that claims to
> use that circuit but the there are errors in the drawing such as the grid
> of the right hand half isnt connected to anything and the transformer
> secondary feeds mark and space filters via pot (presumably for balancing)
> but there are no terminating resistors so the pot wont do
> anything.73,AlfG3WSD______________________________________________________________GreenKeys
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