[Boatanchors] unknown octal device

[Geoff]

The octal base ballasts Im familiar with are glass or perforated metal for 
air flow, about 5T4 size.
Put a photo on one of the host sites.

Carl
KM1H


----- Original Message ----- 
From: "Gerry Steffens" <gsteffens at pitel.net>
To: "'Boatanchors-qth'" <boatanchors at mailman.qth.net>
Sent: Tuesday, January 17, 2012 2:25 PM
Subject: [Boatanchors] unknown octal device


> While going through and cataloging my tube supply I came across three
> identical devices I cannot identify.  I assume they are ballast tubes. 
> Are
> they?
>
> They are black metal cylinders about 1.375 inches in diameter and about 3
> inches tall with effectively an octal tube base on one end with 5 pins and 
> a
> with a small narrowing of the cylinder to a lesser diameter for the last
> quarter of an inch at the top or other end.  They are marked (actually
> stamped into the metal) TRIAD with 10A below the name.  There is a 3/8 
> inch
> wide band of knurling around the cylinder about 3/4 inch down from the 
> top.
>
> I have executed quite a few Google searches in attempting to ID these
> things.  Everything TRIAD comes up with fluorescent light ballasts.  Also
> checked out the Playthings of the Past website's Ballast Tube listings - 
> no
> 10A and no mention of TRIAD.
>
> Anyone have an idea what these critters are or who might need (or want)
> them?  Since they don't appear to be gold, platinum or silver they are
> probably available for postage, 'cause I really don't suspect they are 
> like
> that Picasso painting I had always hoped to find stashed in a house I
> bought.  But, I really hate to toss out stuff that someone might be 
> looking
> for to do restorations.  I think I have had them for 50 or more years.  I
> believe they arrived in some boxes of stuff given away when the Jamestown,
> North Dakota Ham club went inactive back in the early 1960s.  Besides,
> dragging them across a number of states over the years, I suspect they are
> tired of hiding and might appreciate a good home where they are needed or
> wanted.
>
> Cheers,
>
> Gerry
>
> Gerald Steffens P.E.
> Radio Historian, collecting & restoring
> E.H. Scott, McMurdo Silver, Hallicrafters,
> National, Zenith Transoceanics & any other
> interesting radios & classic Oldsmobiles
>
>
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