[50mhz] polarization ?

[Chris Boone]

Good point Danny....but a full lambda loop is also more directional in
90degs to the plane of the element...A half lambda loop radiates in the same
plane as the wire, etc.

Stacking two 1/2 lambda loops gives you 3db over a single loop....and such a
loop is close to a dipole in overall signal (actually about 0.8-0.9db vs a
dipole reference of 1)

YES, a turnstyle MAY be a better...but even better (and best!) is a QUAD
turnstyle! :)

A turnstyle has 1 major issue...SWR is low over a wide range BUT the pattern
skews quickly from center design frequency...and goes from omni to
elliptical.

Quad turnstyle eliminates that..

OR get someone like ERI, SPX/Dielectric, Shively, etc. build a single
circular polarized bay or two or 4 bay and be done with it ;)

Chris
WB5ITT

> -----Original Message-----
> From: 50mhz-bounces at mailman.qth.net [mailto:50mhz-
> bounces at mailman.qth.net] On Behalf Of Danny Pease
> Sent: Monday, October 17, 2011 2:46 PM
> To: 50mhz at mailman.qth.net
> Subject: Re: [50mhz] polarization ?
> 
> I think you better define "loop" before you say loops have no gain. A full
> wave loop does have gain over a dipole, a half wave loop, such as the M2,
> does not.
> 
> Stacking 2 half wave loops will give you gain over a single half wave
loop,
> but not necessarily gain over a dipole. In the case of the M2 squalos, I
> suspect you would have to stack more than 2 of them to actually get gain
> referenced to a dipole.
> 
> I have had good luck on 2 meters with a 3/2 wave dipole, bent into a
> triangle shape, but that may be a bit large for 6 meters.
> 
> A better solution might be a turnstyle for 6 meters.
> 
> NG9R
> 
>