Instead of giving Tom the award for "Dumbest Statement
of the Year" perhaps we should give Yuri the award for
"Cheapest Cheap Shot of the Year" :):)
Mike, W4EF...............
----- Original Message -----
From: "Joe Subich, K4IK" <w8ik@subich.com>
To: <K3BU@aol.com>; <towertalk@contesting.com>
Sent: Thursday, January 03, 2002 9:51 AM
Subject: RE: [TowerTalk] Half slopers using a tower
>
>
> Yuri,
>
> >
> > K3BU:
> > With half slopers (wire length = quarter wave electrical)
> > disconnected and unused, they act like "nothing" for RF at
> > the frequency of operation. This "trick" of disconnecting
> > quarter wave radiator (wire) from the ground connections is
> > used to disable the vertical, detune it from the resonant
> > frequency = make it "invisible" to RF (at that frequency).
> > For wire like that to act as a "counterpoise" it has to be
> > connected to the antenna system or be near half wave
> > electrical length to act as a parasitic element and be
> > positioned so it can direct the RF from the radiator in the
> > desired direction.
> >
>
> You made an assumption about the configuration under discussion
> (as did Tom). The original poster did not specify if the un-
> used 1/4 wave wires were grounded or floating (the switch boxes
> Tom designed for Ameritron *GROUND* unused antennas for safety).
>
> As such, you had no right to call Tom's posting "the dumbest
> statement of the year." You owe Tom and everyone else an
> apology ...
>
>
>
>
> ________________________________________________________________________
> This list is sponsored by the new eHam.net Store. When you buy products
> like ICE filters, Array Solutions StackMatch, or M-Squared Antennas from
> the eHam Store for the same price you pay direct, a portion of the sale
> price goes to support this list. Check it out at http://www.eham.net.
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
>
________________________________________________________________________
This list is sponsored by the new eHam.net Store. When you buy products
like ICE filters, Array Solutions StackMatch, or M-Squared Antennas from
the eHam Store for the same price you pay direct, a portion of the sale
price goes to support this list. Check it out at http://www.eham.net.
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|