[NLRS] 432 antenna/ feed questions

[Mary Brown]

Yes you can mount them that way, Ron will know stacking and he watches NLRS but may be busy so if you can wait a couple days...

Mary 

W0AAT

-----Original Message-----
From: nlrs-bounces at mailman.qth.net [mailto:nlrs-bounces at mailman.qth.net] On Behalf Of Dave Aho - N9TTX via NLRS
Sent: Friday, July 24, 2020 1:07 AM
To: Paul Husby; NLRS
Subject: Re: [NLRS] 432 antenna/ feed questions

Yup I realize the beamwidth will be narrow. These are the 25 element (or sometimes 2/3 length depending on vehicle length) K1FO's that i got from Ron KA0RYT. I ws going to email him but the old addy I had is no longer valid I guess. I am planning if it is feasible and workable to mount two of them horizontally polarized and side by side on a spreader due to the short stack height on the truck. I'm not worried much on calling g cq as I would normally peak/work the lower bands 1st then go to 432 and higher once I regain 1296 and 902 later on. I'm just trying to also find a phasing harness/splitter to drive them both.  I cannot seem to find a ready made one on directive systems site yet. So that wS tax other question for ron.


I modulate, therefore I am! ...73, and all that jazz, Dave...N9TTX Always remember: "It could be worse.....it could be raining." Marty Feldman from "Young Frankenstein" 

    On Thursday, 23 July 2020, 20:39:02 GMT-5, Paul Husby <husby002 at gmail.com> wrote:  
 
 The beamwidth will be half what it was for a single, so it will be very narrow depending on how long the booms are.  That's fine if you know your heading for working a given station, but bad if you are trying to call CQ.

Horizontal spacing should be the same as vertical spacing.  Feed is best done with a power divider in the middle and equal lengths of coax to each antenna.

73
Paul W0UC

On 7/23/2020 5:47 PM, Dave Aho - N9TTX via NLRS wrote:
> 1. I know vertically stacked horizontal oriented antennas would be optimal, but would two horizontal yagis be "stacked" effectively next to each other on a cross spreader...and what should the best distance between booms be?
> 2. if stacking either horizontal or vertically, what should the phasing harness lengths and feed type be? Or would anyone have one for 432.
> Just curious as if I do go out for the UHF test in a couple weeks, and 
> for the Sept test I could put 2 yagis side by side on that band. I only have about 3-4 feet of vertical mast available before I am over legal height on the truck I modulate, therefore I am! ...73, and all that jazz, Dave...N9TTX Always remember: "It could be worse.....it could be raining." Marty Feldman from "Young Frankenstein"
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