Espritmodel.com Telemetry Radio
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Old Nov 13, 2012, 10:44 AM
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Mr Big Head's Avatar
United States, CA, Redding
Joined Feb 2011
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Help!
ALignment of receiver antennas

I have just finished building a 3DHS 48 inch Viper. The optimal place for the receiver is with the 2 opposing antennas on the main receiver directly under and parallel with the carbon wing tube. It does have a satellite receiver on the side of the fuselage about 4 inches away with it's antennas at a perpendicular angle to the main receiver. Is there a problem with this setup? If this is OK what if there wasn't a satellite receiver? Would it be a problem then? Thanks in advance. Mike
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Old Nov 13, 2012, 01:56 PM
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richard hanson's Avatar
United States, UT, Salt Lake City
Joined Oct 2007
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Quote:
Originally Posted by Mr Big Head View Post
I have just finished building a 3DHS 48 inch Viper. The optimal place for the receiver is with the 2 opposing antennas on the main receiver directly under and parallel with the carbon wing tube. It does have a satellite receiver on the side of the fuselage about 4 inches away with it's antennas at a perpendicular angle to the main receiver. Is there a problem with this setup? If this is OK what if there wasn't a satellite receiver? Would it be a problem then? Thanks in advance. Mike
On similar models - I move the rx away from CF tube - rearward as far as possible then - place the second (satellite) rx in the very bottom of the model - away from everything You can buy a longer wire to connect rx to satellite.
My basic setup assumes that generally the bottom of the model is presented to the tx (or side n bottom)
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Old Nov 13, 2012, 10:17 PM
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USA, MO, Florissant
Joined Nov 2010
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Ideally, the antennae should be at least one wavelength away from any large conductive objects that behave like a ground plane; that would be about 5 inches. If, however, you can turn the main receiver about 90 degrees to the CF tube, that would be better than parallel, because the shadow of the CF would be smaller at the receiver antennae, and the tube would look less like a ground plane to them.
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