[Boatanchors] Stuff available

[EP Swynar]

Hi Bill,

The period West Coast Handbooks (and, I believe, the ARRL Handbooks)
fearured circuits employing this CRT in AM modulation monitors...small, but
effective, I s'pose!

~73~ Eddy VE3CUI - VE3XZ



----- Original Message -----
From: "bill riches" <bill.riches at verizon.net>
To: <telegrapher at att.net>; <Boatanchors at mailman.qth.net>
Sent: Saturday, November 11, 2006 4:47 PM
Subject: RE: [Boatanchors] Stuff available


>
> Then i found in a box of tubes a brand new 913.  My RCA book says it was
> discontinued in 1941 but has no reference data for it.  Wonder what it is
> and what it was used for.
>
>
> 913 is a crt A1-1000v, A2-500V, GRID CUTOFF-20V, DEFLECTION 200VPI.
>
> Info from ARRL handbook 1956.
>
>
> Now this is interesting - here is info from 1942 arrl hbk:
>
> A1-100v, a2-500v, grid cut-off-90v, defkection-.1v/mm, persistence - p1,
> trace is green.  Size is 1".
>
> Looks like a great tube for a project!
>
> 73,
>
> Bill Riches, WA2DVU
> Cape May, NJ
>
>
>
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