SatSig topic:

Channel Master Offset?

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Dec 5^th, 2007 at 3:01pm

Hi, was wondering if anyone knows the exact offset of a channel master 1.2m dish. I believe it to be similar to a 1.2m andrews class II as it has the 2 metal beams that support the dish on the back side. I couldn't find any part numbers or anything else to identify the dish other than its a channel master, and its 1.2m.

I'm trying to set my precise elevation in order to aim at W6, but my AZ/EL mount is in pretty bad shape (it has a slight warp to it) so I don't trust the elevation scale. Thanks,
Brendan

PS - anyone know a place that sells replacement AZ/EL mounts?

Dec 5^th, 2007 at 3:55pm

Hi,

The offset angle should be 22.6 As you may know Channel Master antennas now produced under name of Andrew.

Best regards,

Huseyin

Dec 6^th, 2007 at 3:40am

22.6 is the angle for 1.8 meter. Possibly around 17 for 1.2.

Dec 6^th, 2007 at 8:51am

Documentation Andrew-antenna-123-manual.pdf (1.5 Mbytes pdf file size) for Type Class I and II 960/123 0.96/1.2m says:

Type:123 Class I and II 1.2m 16.97 deg offset
Type:960 Class I and II 96cm 15.4 deg offset

The Class II Andrew antennas have short rear side struts. . These struts need to be adjusted to correct any dish distortion. Make sure the front rim of the dish is flat to 1.3 mm. Use tight fishing line up/down and across.

Best regards, Eric.

Dec 6^th, 2007 at 11:02am

Thanks, thats exactly what I needed to know.