[sarex] PCSAT2 special Operations Event PLAN

Robert Bruninga bruninga at usna.edu
Wed Aug 2 08:34:33 PDT 2006

Subj:  ISS Packet =>VOICE Contacts:

Starting on 4 August, and for the 26 days remaining of 
PCSAT2's operation on ISS, PCSAT2 will be configured for 
VOICE response to normal packets transmitted via  the normal 
ISS digipeater 145.99 uplink (or PCSAT2's uplink on 145.825 
if the ARISS packet system is not operational).  The command 
station's voice downlink will be on 437.975 +/- Doppler and 
he/she willl attempt to acknowledge  by voice all packets seen 
on the packet uplink.

The UHF downlink will be weak (only 1 Watt) and being
UHF (9dB worse than 2m), will need at least a small
beam to hear it.

Users who want to participate, simply send your packets
as normal VIA ARISS on 145.99 uplink (if available or via
145.825 if not) but listen on the 437.925 downlink for the 
combined voice and packets.  This will only work when 
PCSAT2 is in range of a participating command station and 
there is no guarantee that all command stations will be available 
on  any given pass.  In otherwords, this may be rare, but fun.

Right now, passes in the Northern Hemisphere are occuring
before sunrise, so only the last two morning passes may be
so manned for voice.  Passes in the Southern Hemisphere 
right now are from midday into evening.

Best thing to do is simply monitor 437.975 during ISS passes
and if you hear a command station, then send us a 'hello' 
packet via the  ISS digipeater.

We need a volunteer command station in South America,
South Africa and some other footprints too if activity is
desired in those areas.

US Naval Academy Satellite Station

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