Corrected version:

STS-121: Tuesday pre-launch activities have begun
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It is Tues, 7:34am EDT (1134z).
Range Clearance activities have begun here in the NASA-KSC area, in
preparation for the Space Shuttle STS-121 launch planned to take place
at 2:38pm EDT (1838z) today.
"USCG Range Control" has been up on 157.075 getting ops and position
from various CG assets, including "CG Bear Cove" and "CG Vessel 438."
"CG Station Canaveral" has been up on 157.175, in comms with CG
Auxiliary vessels, incl "CG Vessel 2787" and CG Vessel 1747." He is
also in comms with "CG Vessel 25442" on 157.15. And he is talking with
"CG Cutter Kingfisher" and with "CG Vessel 301" on 157.075.
In addition the Combat Air Patrol is active over KSC. Eglin AFB
F-15s "ARROW 45" and "ARROW 46" as well as "Tanker 11" are up with
Miami Ctr on 343.7; and they are engaged in air-air comms on 252.0.
At the moment ARROW 46 is getting topped off by Tanker 11.
Lastly "Search 01," one of the NASA UH-1H helos, has just departed
Patrick AFB, switching from the tower freq 133.75 to Cape Control freq
133.8, to begin his mission over the Cape.
As for HF, there have been test counts and some radio checks on SRB
recovery vessel freq 5711 kHz USB.

AL STERN Satellite Beach FL (28-11N 80-36W) monitoring
 Patrick AFB (KCOF)  NASA-KSC Shuttle Landing Fac (KTTS)
 Avon Park Bombing Range (KAGR)  Cape Canaveral AFS (KXMR)
 JSTARS E-8 Acft Integration Facility, Melbourne IAP (KMLB)
 Worldwide Military HF Communications
 Life Member: Missile, Space and Range Pioneers.
 http://hometown.aol.com/allanstern/myhomepage/ (My Freqs)
 http://hometown.aol.com/scanaddict/index.html (My Equipment)
 http://groups.yahoo.com/group/FloridaMilcom/ (My postings)