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Author Topic: 2 towers & separation distance & direction.  (Read 599 times)
ZL1BBW
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Posts: 370




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« on: February 03, 2013, 01:01:42 PM »

I am putting up 2 towers.
1) will be 55 - 60 feet high, with a 4 ele cubex 20/15/10 quad on top.
2) will be about 35 feet high with a 3 ele wide spaced 20m beam on top.

Terrain is practically flat.
Soil is alluvial river flats, high water table in winter and gradually dries out over summer, ant 2 will be close to a stream that is permanent water way.

Intention, use #1 as the main and #2 will be used probably fixed on either USA  or JA or for the close in pacific DX.

I can space them 40 - 50 metres quite easily, is that enough.    Presently looking at aligning them north south, BUT would I do better if they were in a NE SW plane and then phase the 2 on 20M?.

Any thoughts?  I am only digging the holes once :-)

QTH is 35 43" 31.21 south    174 7' 36.40 east

Thanks
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.
K2DC
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Posts: 1351


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« Reply #1 on: February 04, 2013, 08:27:45 AM »

IMO it will not do much good to try to phase them.  At such different heights, they will have much different take-off angles.  And as widely spaced as they may be, you may not see enough gain advantage to be worth the trouble.  #2 will have a higher take-off angle, so it might be best as fixed for closer in Pacific or Eastern Asia.

73,

Don, K2DC
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N8BOA
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Posts: 90




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« Reply #2 on: February 04, 2013, 09:09:53 AM »

I hope you are considering Stringing dipoles between them 250ft+ for 160 meter
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ZL1BBW
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Posts: 370




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« Reply #3 on: February 04, 2013, 11:11:45 AM »

Thanks for the replies,  The low bands are being covered in a separate project.

3) A vertical for 40/80/160 probably 20 - 25m high
4) A bit longer away in time a series of wire LP's for 40M around a central pole, so it can be instantly switched in direction.
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.
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