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Author Topic: Antenna Orentation  (Read 772 times)
NZ6E
Member

Posts: 11




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« on: March 19, 2010, 09:34:20 AM »

Greetings,

I am finally getting around to rebuilding my station for contesting. I have a single US Towers HDX72 with a 20 foot reinforced mast. I will have a XT34XA (upgraded with the new hardware) a M2 40M4 4 ele 40 meter beam and a Create Degign rotatable 75/80 meter dipole that will be going on the mast. The 40 will be closest to the thrust bearing with the XA at the top and the dipole in the middle. I have to mount the 40 mtr beam at 90 degrees to the XA to minimize interaction. The question is, which way? With the XA pointing north should the 40 be pointing east or west. I am in South Central California.

If the 40 points west then I can work/run JAs on 40 during the late night early morning and have the XA pointing to Euro for the early morning opening on 10/15/20 (assuming we have sun spots). If I point it to the east then the evening run to Europe will have the XA pointed to the JA for 10/15/20 before their band closes.

This will be strictly a single TX operation. Adding a dual VFO rig will add another variable (listening on 40 while on 10/15/20 or vice virsa).

Any thoughts on where the 40 should point in relation to the XA?

I'm not new to contesting but I've been away from it for over 9/10 years. The XA has been with me forever and I'm just rebuilding it. The 40 beam is new. I've been using a rotatable dipole up to now.

Thanks
Greg
N6PYI
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WX7G
Member

Posts: 6197




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« Reply #1 on: March 19, 2010, 06:58:32 PM »

Europe can come in via long path on 40 and 20 meters in the morning. Another complication. Flip a coin.  

You might think about a multiband vertical as a multiplier antenna to pick off mults on the band where the Yagi-Uda is pointed the wrong way.

How else can this be done? There are those things that attach to the tower and rotate the antenna around the tower. The 40 meter on that and the 20 meter on the mast and rotator.

Do you want to win or be first loser?
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