[ARC5] ARC-5 Receiver Question

[Dennis Monticelli]

Cutting corners, staying flexible, and just being pragmatic.  Makes sense.

My W.E. BC-453-B (serial 100381) calls out metal or glass on the lid for all
tubes except the 12K8.  The acutal tube complement, however, is all metal
excpet for the 12SR7GT.  I got this radio already modified with 12V
filaments and missing the 12K8, so I don't know if the rest of the tubes
were as supplied by W.E. or replacements.  Overall condition suggests that
this is was a NOS set at one time so the tubes are likely orginal.

Dennis AE6C

On Wed, Feb 17, 2010 at 8:12 AM, Mike Morrow <kk5f at earthlink.net> wrote:

> Michael wrote:
>
> >On tubes: Early equipment was built with metal tubes while later
> >SCR-274-N receivers were built with glass tubes.
>
> Only some of the later receivers used glass tubes.  I have several NOS
> BC-453-B, BC-454-B, and BC-455-B receivers.  The tube legend under the
> tube cover specifies either metal (VT-) or GT tubes for every tube except
> the metal 12K8.  My receivers use anywhere from three to five glass tubes,
> or all metal tubes.
>
> For example, one W.E. Co. BC-454-B SN 130099, uses five glass tubes.  A
> later W.E. Co. BC-454-B SN 140437 (and MFP date of 5/1945), uses all metal
> tubes.  It looks like metal was preferred when available, and that there
> was no point after which all W.E.Co <http://w.e.co/>. units used at least
> some glass tubes.
>
> Mike / KK5F
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