Re: [amsat-bb] lower frequency downlinks

["Trevor M5AKA" <m5aka@xxxxxxxxxxx>]

>From: "John B. Stephensen" <kd6ozh@comcast.net>
>  I beleive that all of these launches were either free or heavily 
>subsidized so space was less of a problem.

My understanding is that Oscar's 6, 7 and 8 used coiled up steel tape 
measures as antennas which were released when in orbit to form a dipole, so 
the amount of available space on the launch vehicle was not an issue.

Such a dipole acts as an efficient antenna and is ideal for LEO and MEO 
orbits.

73 Trevor M5AKA
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