[Hallicrafters] 1000 kc crystal tube

[Mike Everette]

The BC-221, and similar Navy LM series, did not use glass-tube crystals.  The 1000 KHz crystals were in a metal octal tube envelope.  I've seen a lot of both the 221 and LM and never, ever encountered one with a glass crystal.

73

Mike
WA4DLF

--- On Thu, 2/25/10, rbethman <rbethman at comcast.net> wrote:

> From: rbethman <rbethman at comcast.net>
> Subject: Re: [Hallicrafters] 1000 kc crystal tube
> To: hallicrafters at mailman.qth.net
> Cc: "Dan Cotsirilos" <k9dtc at comcast.net>
> Date: Thursday, February 25, 2010, 6:19 PM
> Dan,
> 
> Look for a LM-221 (or is it a BC-221?) frequency
> meter.  That's where it 
> came from, almost a certainty!  They all have one, and
> some even have a 
> spare - IF the spares haven't been robbed.
> 
> Bob - N0DGN
> 
> On 2/25/2010 6:04 PM, Dan Cotsirilos wrote:
> > Someone sent me in error a 1000 kc crystal unit marked
> Signal corps. It looks like the black metal can tubes like a
> 6SJ7 etc. It is brand new. Can anyone use such a item?
> >
> >
> > Dan K9DTC
> 
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