[TowerTalk] Stacking Distance for M2'd 6m7JHV?

[Steve Gehring]

K5GW is right on the money.  A quick glance at the M2 webpage places the
stacking for the 6M7JHV at:

Stacking Distance, Max:  27' Wide, 25' High

As someone else also pointed out, call M2 and speak with Mike or one of the
others.  IMHO, if you do not put them too high, they will be a killer combo
with a stackmatch, say 35 and 60 feet.  Cheers.

I had a small stack of 3-element yagi's at 22 and 37 feet in the early
nineties and worked the world with them. In fact, I worked VK3OT two years
in a row at the 10 and 150-watt levels.

73 de Steve, NL7W
-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of TexasRF at aol.com
Sent: Monday, July 12, 2004 7:08 AM
To: keith at dutson.net; towertalk at contesting.com
Subject: Re: [TowerTalk] Stacking Distance for M2'd 6m7JHV?

Max stacking gain for dipoles is 5/8 wavelength. Max stacking gain for yagis

varies with boom length. For the 6m7JHV with a 30ft 8in boom length,
stacking 
distance will be in the 25 to 26ft range. As always, before cutting and 
drilling the stacking should be confirmed by one of the yagi modelling
programs.

You can stack closer but the maximum realizable stacking gain will not be 
reached. In this case, you could be better off with a single longer yagi
than 
understacked yagis. If the stacking is wider than optimum, the gain doesn't 
suffer but the main lobe becomes skinnier and other grating lobes become
higher in 
amplitude.

73/k5gw
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