[ARC5] The Regenerative Superhet - Armstrong meets Armstrong.

[Dennis Monticelli]

FYI.  At the California Historical Radio Society we commonly refer to them
as the "big pin" tubes.  But if someone says "number tubes" or "two digit
tubes" or "pre-Octal" everybody gets it.

Dennis AE6C

On Sun, Jan 15, 2023 at 9:54 AM J Mcvey via ARC5 <arc5 at mailman.qth.net>
wrote:

> i always wondered what the "proper" name was for the pre-octal tubes with
> the different size pins? Is there a name for them?
> My shorthand for them is "number tubes"
>
> On Sunday, January 15, 2023 at 12:32:48 PM EST, Leslie Smith <
> lnsmith99 at gmail.com> wrote:
>
>
> To all:
>
> This topic is fascination but has little to do do with Aircraft Radio
> Corporation or ARC-5 sets.  I will conclude by saying articles in Frank
> Jones Radio Handbook and other material found in the National Library of
> Australia (NLA) reflect a 'feeling in the air' of adventurous experiment.
> The Wireless Institute of Australia (WIA) - the Australian equivalent of
> the ARRL - held exhibitions in Sydney Australia, as we see here:
>
> Sydney's 1937 Amateur Radio Exhibition.
> "So successful was the 1936 Amateur  Radio and Short-wave Radio
> Exhibition  that there wasn’t half enough room for  everything that could
> have been shown.   For the 1937 show the N.S.W. Division  of the Council of
> the W.I.A. has decided  to hire Sydney’s Town Hall.
> On this occasion the public will be  able to see first-class amateur
> stations in  action, working ultra-short waves as  well as the regular
> short-wave DX
> channels. There will be constructional  competitions in short-wave
> receiver de-signing, and good prizes will be offered  in all sections."
>
>
> The Jones super-gainer/superhet is mentioned in the same paper.  The
> design principle in the 1936 Radio handbook appears to pre-date the Polish
> A and AP underground sets.  In the Polish sets the octal 6K8 replaced the 6
> pin 6C6.  The chronology of development is unclear to me.  I understand
> Drake designed (or at least began the design) of what became the SCR-series
> sets in 1934, but  octal tubes didn't appear until 1935.
>
> Anyway, as I wrote before, this topic belongs in another place, not the
> ARC5 mailing list.
>
>  73 to all
>
>  Leslie
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