Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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dave
 
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Default Astec TV Modulators

Has anybody got (or can tell me where to get) any datasheets / pinout
info on RF modulators made by Astec, particularly the UM1233 and
UM1287 models.
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Fast Eddy
 
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Default Astec TV Modulators

try here for the um1233

http://www.timetec.freeserve.co.uk/transmitter.htm

I have the data sheet somewhere but cannot for the life of me find it at the
moment

(Put it somewhere safe you see )


Regards



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u1061771156
 
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Default Astec TV Modulators

In article , dave wrote:
Has anybody got (or can tell me where to get) any datasheets / pinout
info on RF modulators made by Astec, particularly the UM1233 and
UM1287 models.


From 1985 Maplin catalogue:
____________
UM1233: a Supply +v a----| | Case=GND
b Video in b----| |
c none c----| |
d none d----|________ _|
|_|

Supply +5V @ 6mA
Bandwidth 8MHz

UM1286: (yes, I know you wanted the UM1287 but maybe it's close?)
a Fine tune
b Audio in
c Supply +V
d video in

Supply +5V @ 9mA
Bandwidth 8MHz
Sound carrier 6MHz

Regards,
Mike.

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