Transmitter azimuth - magnetic deviation?

[mchomicz]

I’ve been reading up on satellite setups and it appears that magnetic deviation is all-important in performing satellite installation (i.e. magnetic north has to be corrected with magnetic deviation in order to find actual magnetic north based on site location; also known as difference in magnetic south versus “true south”)

Here is my question. Is the same true for transmitter azimuths for OTA transmitters provided on www.antennaweb.org/aw/Address.aspx ? Or does that site already take into account magnetic deviation and provides corrected azimuth readouts (in other words I adjust my antenna direction based on compass readout and don’t have to correct for magnetic deviation).

Thanks,
Michael

 

[oljim]

adjust for best signal, az is just a guideline,

 

[Carl B]

The antennaweb.org azimuths are compass readings from your location. You don't need to worry about declination. However, if you attempt to translate those azimuths from a map of your house and geographical area, then you will need to adjust them for declination.