[MRCA] 29.4 ID

[Ray Fantini]

Sounds like the ghost of A0-7 to me, launched back in 1974 its batteries failed in 1981 but around 2006 they opened up and when in direct sunlight A0-7 will sometimes come back on line. There were two on board transponders or modes (A and B) The mode A transponder is 145.85 to 145.95 uplink with a downlink of 29.4 to 29.5 with a beacon on 29.502 You would first locate the beacon and then tune down for traffic, that way you did not have to figure Doppler. Never corrected for Doppler on uplink just search in the pass band for your downlink.
The mode B side 432.125 to 432.175 uplink and 145.925 to 975 downlink and a beacon of  145.975 The satellite will operate only one mode at a time depending on what it wants to do when it wakes up and dies as soon as it goes into eclipse. The beacon ID is CW but I do not remember what they were.
Its in a high orbit and tends to be there a while unlike the low earth orbit stuff. Like most good ghost stories it’s always worth bringing up again.

Ray F/KA3EKH
________________________________________
From: mrca-bounces at mailman.qth.net <mrca-bounces at mailman.qth.net> on behalf of scottpastor <scottpastor at gmail.com>
Sent: Sunday, July 1, 2018 3:16 PM
To: B. Smith
Cc: mrca at mailman.qth.net
Subject: Re: [MRCA] 29.4 ID

Utter silence on the freq east of the Atlantic.

kc8kbk

> On Jul 1, 2018, at 3:11 AM, B. Smith <smithab11 at comcast.net> wrote:
>
> We are hearing the end of a ID on 29.4.  The last 3 letters are RAE. Anyone have a clue as to what it is or the location.
> Z
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