Date: Sun, 25 Feb 2007 23:28:03 -0600
Doppler weather radar sites, or if near airport it might be wind-shear=
Doppler.
----- Original Message -----From: Joo= FaloopaSent: Saturday, February 24, 2007 = 8:46 PMSubject: [TSCM-L] SIGINT towers vs= regular communications towersPardon me if the question seems overly mundane or off-topi= c, but are regular radio communications dishes usually built in enclosures? There are obviously very good reasons for enclosi= ng directional antennas used for SIGINT (ie, keeping people from finding out= what they're pointed at) but I don't know of any reason you'd need to do the s= ame with communications dishes.
I always thought communications satellites pretty much had to be geosynchronus; so a regul= ar comsat dish wouldn't have to be reoriented very often, if at all. &n= bsp; I suppose you might still not want people knowing where they are, but I w= ould imagine anyone capable of threatening a satellite would be more than able= to locate them without taking a bearing from a dish.
Are there maintenance reasons to enclose a dish? ie,= protection from the elements, etc? With a mechanized, re-orientable dish this would also seem to be a bigger issue (moving parts). Though I suppose all dishes have to be at least= somewhat re-orientable to maintain functionality.
Please pardon if= I'm grossly breaching protocol with this question ;)
I've attached a pictu= re of an antenna nearer to me than I thought any SIGINT went on. I figure= it's just a normal communications antenna, but thought I'd see if anyone thoug= ht different.
thanks
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