[Milsurplus] [Vintage-Military-RADAR] Re: puzzler - module with glass rod?

[Michael Hanz]

Looks like a barium titanate transducer glued to the end of a fused 
quartz rod, normally used in broadband delay lines with a transducer at 
each end.  Unterminated, it might be used as a delayed pulse generator 
of some sort, I suppose.  The center frequency can be quite high - see 
http://patentimages.storage.googleapis.com/pages/US2861247-0.png

  - Mike  KC4TOS

On 4/3/2016 10:40 AM, Nick England navy.radio at gmail.com 
[Vintage-Military-RADAR] wrote:
>
>
> http://www.navy-radio.com/puzzlers.htm#glass
> I've just added some more photos. This glass rod appears to have a 
> single contact to a ceramic(?) button attached to its base. Maybe some 
> sort of piezo transducer with the rod acting as a resonant filter? 
> What's it doing in something that otherwise appears to have VHF(?) 
> coils and trimmers. Is it some sort of radar pulse processor thingie?
> The rod assembly is labeled Z1 on the components diagram.
>
> Oh yeah, free to a good home...
>
> cheers,
> Nick the curious
> www.navy-radio.com <http://www.navy-radio.com>
>
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