-=> Quoting Rick Jurgens to Nathan Bollinger <=-
 -> 145.55 is the 2-meter downlink frequency for both the Shuttle and Mir.
 Mir
 -> also uses 145.55 for the uplink, but the shuttle uses 144.950. (600khz
 RJ> down)
 RJ> Nathan,
 RJ> Thanks for them...
 RJ> Thanks again,
 RJ> Rick
145.550 Mhz is an old downlink frequency for MIR voice and packet radio. 
Check the message listed below for the new freq.
__________________________________________________________________________ 
To: Amateur Radio Stations
From: MIREX Mir International Amateur Radio Experiment
Subject: Mir Frequency change experiment
Date: June 13, 1997
A frequency change experiment is tentatively scheduled to take place the 
weekend of June 15th at 1200 UTC with the 2-meter station on board the Mir 
Space Station. The duration of the experiment has not been finalized, we 
would like your inputs on the results.  The MIREX team has received numerous 
complaints from around the world, stating the existing Mir 2-meter channels 
are not usable.  In November 1996 Mir changed from the successful channel 
145.550 simplex to a 145.200/800 split  frequency. This combination of 
channels (145.200/800) does not work very well for most  parts of the world.  
In many countries the 145.200 is used for repeater Outputs  or Inputs.  The 
145.790 channel is in use by many semi-permanent packet operations. The new 
temporary frequency which MIREX has requested is 145.985 Simplex. All 
operations, Voice and Packet will be on 145.985 Simplex.  This frequency was  
chosen for three primary reasons.  First it complies with the ITU 
International Band plan for Satellite operations. Second, It gets Mir away 
from most of the terrestrial based interference. Third, The Mir 2-meter 
station is desensed by commercial VHF activities on board Mir (in the 143 MHz 
range).
__________________________________________________________________________
George
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