[TowerTalk] Inverted Vees

[jimlux]

On 6/16/20 5:34 AM, dj7ww at t-online.de wrote:
> No, my best 160m receiving antenna is my vertical.
> Very weak signals are not audible on my receiving antenna.
> My receiving beverage antennas 120-160m long are only good for directivity
> like suppressing qrm.
> 

Of course, beverages are vertically polarized (as are rhombics) - the 
field is between the wire and the soil underneath, and vertically oriented.



> 73
> Peter
> 
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Rob
> Atkinson
> Sent: Dienstag, 16. Juni 2020 12:37
> To: towertalk
> Subject: Re: [TowerTalk] Inverted Vees
> 
> <<<As Jim pointed out horizontal polarization beats vertical
> polarization almost all the time. Your V is H-pol. I've modeled dozens
> of antennas for restricted spaces (like suburban lots) and, of course,
> verticals are attractive in that application (inconspicuous, and they
> fit), but I've not found something that consistently beats even an
> electrically short horizontal dipole (or a V with shallow droop, up to
> 45 degrees). Unless your house is in the middle of a particularly
> excellent soil properties (salt marshes again). There are specialized
> cases where the trade might push one way or the other. Or you might
> value inconspicuous over performance (defined in a TBD way).>>>
> 
> I have to disagree with this in one case, that of the ham who chases
> DX on 40 and 80 meters and is unable to put a rotatable beam or dipole
> up high enough on a tower to be effective.   My experience with
> friends in these cases has been that they can achieve their goal of
> 5BDXCC using relatively modest loaded verticals at heights of 15 or 20
> feet and a few elevated radials.  Horizontal antennas at the same
> height are a show stopper.  BUT, the deal killer with the verticals
> isn't on transmit, it is on _receive_.   These fellows _must_ have a
> few varied receiving antenna options as the DX may well be engulfed in
> noise on the transmit vertical.


Yes, that's those "other considerations"  - verticals are all azimuth omni.

And, "gain" is not the be-all end-all - for a lot of amateur radio 
applications (particularly on receive) directivity (whether in el or az) 
is probably more important.