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Member
Posts: 3,577
Registered: June 2006
      Feedback: None

Surveillance Antenna .1MHz to 10GHz
Quantity Views Date Posted
1 897 Sat June 14, 2014
Asking Price Shipping Amount Condition
$175.00 None Great
Description:





Here is an indoor surveillance antenna used by the US Govt for monitoring VLF through 10GHz. These were usually placed above false ceilings and the antenna sits upright with the small dia end with coax connector pointing down. I have two of these and am selling my spare. I have experimented with these and they do receive HF, although a bit lower in level than a short passive tuned whip but on VHF/UHF and above they work great. These cost a fortune new and are rarely seen. This is a perfect VHF/UHF scanner antenna for the attic or for those who cannot have an outside antenna, or it can be weather proofed and used outdoors. I was able to track down the program manager for these and my version is the predecessor to the brochure in this link and has the same basic specs: http://forums.radioreference.com/scanner-receiver-antennas/130623-surplus-sri-discone-info.html#post970774


My camera distorted the shape of the antenna and its tapered about like a typical office trash can. Shipping will be via Fed-X ground to US address only please.  


 


 


 

Keywords: Surveillance Antenna .1MHz to 10GHz



Mike_G_D
Member

Registered: December 2002
Location: Carlsbad, CA
Posts: 861
Comment Date: Wed June 18, 2014

Man - that is KILLING me! I'd love to get that but I'm struggling financially in a really big way.


I assume that "RF probe mode" is referring to a near field response?


Anyway, that's a nice looking item and a great price!


-Mike

prcguy
Member

Registered: June 2006
Posts: 3577
Comment Date: Wed June 18, 2014

I think they are saying its more of an E field (voltage) probe in the HF region, which is like a very short whip and very high impedance.

Mike_G_D
Member

Registered: December 2002
Location: Carlsbad, CA
Posts: 861
Comment Date: Wed June 18, 2014

Gotcha! Makes sense.



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