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

[Mike Feher]

They can also be used for correlation techniques and even as a discriminator for FM demodulation. Of course, now all of that is done digitally. Again, being delay lines. 73 – Mike 

 

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell, NJ, 07731

732-886-5960 

 

From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Michael Hanz
Sent: Sunday, April 03, 2016 1:29 PM
To: Vintage-Military-RADAR at yahoogroups.com; Military Surplus Mail List
Subject: Re: [Milsurplus] [Vintage-Military-RADAR] Re: puzzler - module with glass rod?

 

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 






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