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Re: Shuttle audio??



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73, Scott WA6LIE
======================================

On Fri, 04 Dec 1998 23:57:12 -0500 Ron Parise
<parise@gelato.gsfc.nasa.gov> writes:
>
>>Brian wrote:
>>
>>> Hello...
>>>
>>> I would like to know if the space shuttle can be heard via radio, 
>now
>when its
>>> in orbit??
>>> What freqs. are used, and is it clear audio og digital.
>>>
>>> Thanks for your help..
>>>
>>> 73 de OZ1SKY, Brian
>
>If you have a reasonable antenna (like a steerable yagi) you might try
>listening in on the EVA communications. That is if an EVA is occuring
>while the shuttle is over your station. The EVA communications system
>utilizes three frequencies, 296.8, 279.0, and 259.7MHz. The modulation
>is simple AM so it is not a problem to copy (if you can hear it!) The 
>orbiter
>and each of the two space suits transmits on one of these frequencies
>and listens on the other two in full-duplex mode. This allows a 3 way
>conversation between the crew inside the shuttle and the crew members
>outside. Since this system is only intended for local comm in and 
>around
>the payload bay, the transmitters are only 100mW (I think) and the 
>antennas
>are just a piece of wire stuffed in the backpack. 
>
>Enjoy!
>Ron, wa4sir
>
>
>
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