----- Original Message -----
From: "Jim Lux" <jimlux@earthlink.net>
To: "WI8W" <wi8w@arrl.net>
Sent: Wednesday, February 12, 2003 8:02 PM
Subject: Re: [TowerTalk] RE: Compass question
> But that Garmin only knows true north if you've been moving in a constant
> direction. (i.e.with a single antenna, and a single point position
> measurement, how can it know direction?)
>
> Or, if the Garmin has a built in compass (some GPS receivers do have an
> electronic compass built in), then it's using some form of lookup table to
> relate lat/lon to variation.
>
> ----- Original Message -----
> From: "WI8W" <wi8w@arrl.net>
> To: <towertalk@contesting.com>
> Sent: Wednesday, February 12, 2003 5:36 PM
> Subject: [TowerTalk] RE: Compass question
>
>
> > The technique I used for aligning my Yagi to north was to let my Garmin
> GPS
> > unit do the pointing. It has a North arrow that is true north and not
> > swayed one bit by the magnetic field. After mounting the antenna on the
> > mast, I put the GPS unit on the bearing plate of the tower, rotated the
> > antenna by hand until it aligned with that North pointing arrow and then
> > tightened the mast clamp bolts on the rotator. The alignment is "close
> > enough for government work."
> >
> > 73
> >
> > Thom WI8W
> >
> > _______________________________________________
> >
> > See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
any
> questions and ask for Sherman, W2FLA.
> >
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
>
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