[Milsurplus] FW: What can you tell me about the acorn?

[Al Klase]

Hue,

The following comes fro Sibley's "Tube Lore."
The acorn tubes were introduced by RCA in 1935, and were just about the 
only game in town for VHF/UHF receiving tubes, until the miniature tubes 
were introduced in late 1939.  The design was licensed to the Japanese.  
So they show up in equipment on both sides.  The eraly part numbers were:

954 6V Pentode
955 6V Triode
956 Remote-cutoff Pentode.

957 1.25V Triode
958 1.25V Transmitting Triode
959 1.25V Remote-cutoff Pentode.

The 954, 955, and 956 morph into the early miniature types 9001. 9002. 
and 9003 that appear in some military equipment.

Get a copy of Tube Lore if you don't already have one, it's a treasure.

Al



On 4/28/2020 2:56 PM, Hubert Miller wrote:
>
> Boys and Girls, this gentleman, member of the NWVRS antique radio club 
> in Portland, Oregon, sent me this note.
>
> The only WW2 radio I am familiar with that used acorn tubes is the TBY.
>
> How about you ? Any comment ? Your information will be useful !
>
> -Hue Miller
>
> *From:* Dick Karman
>
> *Sent:* Tuesday, April 28, 2020 8:17 AM
> *To:* Hubert Miller
>
> *Subject:* Re: What can you tell me about the acorn?
>
> Hey Hue,
>
> Do you remember anything about the RCA 955 tube?  The Acorn? Just 
> Wondering. Stay safe.
>
> Dick
>
> On Mon, Apr 20, 2020 at 11:03 AM Dick Karman  wrote:
>
>     Hey Hue,
>
>     How are you doing - "trapped at the coast?"  Are you staying
>     healthy?  You have nicer scenery than us who dwell in the city,
>     believe me.
>
>     I'm running this 1934 story about the development of the "Acorn"
>     tube in the BALD LETTER (attached). But it leaves us at 1934. What
>     can you tell me about where the tiny tube went during WWII?  Did
>     it keep getting used? (It was named the 955 by RCA, but I find
>     very little mention of it after the war.) I'd like to publish your
>     memories in the Bald Letter, so I'd appreciate it if you'd send
>     them my way (and maybe not post them on the e-group  :).
>
>     Thanks, Dick and the Way Radio Was
>
>
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-- 
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

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