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Re: AO-7 70cm tlm (baudot?)



On Wed, Jun 26, 2002 at 07:58:34AM +0000, Geoff wrote:

> Does any one know if this system ever worked?
> Has anyone heard this system in the last few days?
> Does anyone have any info on the "60 parameters"? (equations etc).
> 
> If we start seeing baudot tlm I'll be tempted to dust off my old PK-232MBX!!
> 
> 73 de Geoff vk2tfg.

Hello Geoff,

I found in my old papers quite a pile of RTTY print-outs from 1975.
But only very few hints on decoding.

A sample from orbit no. 1631 of march 25, 1975 looks like this:

-10025-11679-12635-13014-14624-15000-16422-17306-18000-19000
         ^^^ voltage ~13 V                               ^^^  2304 bcn off
-20520-21511-22387-23899-24889-25198-26548-27355-28897-29887
         ^^^   ^^^   ^^^   ^^^         ^^^   ^^^   ^^^   ^^^  solar panels
-30027-31000-32081-33000-34000-35396-36447-37431-38421-39435
         ^^^   ^^^   ^^^
          29   145   432                                      power out
-40498-41644-42291-43904-44889-45169-46676-47274-48913-49896
         ^^^   ^^^   ^^^   ^^^         ^^^   ^^^   ^^^   ^^^  solar panels
-50020-51693-52631-53410-54880-55254-56389-57456-58851-59857

-03630-02377-03630-02377-03630-02377-03630-02377-03630-02377
 ^^^^^ clock       ^^^^^ status
-03630-02377-03630-02377-03630-02377-03630-02377-03630-02377

-00404-01845-02249-03706-04879-05114-06864-07257-08692-09892
         ^^^   ^^^   ^^^   ^^^         ^^^   ^^^   ^^^   ^^^  solar panels

The proper block obviously starts with the two clock/status lines. 

	Have fun!
		Vy 73 de Viktor OE1VKW
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