Long range remote control wanted.

Line of sight?

Yes, line of sight. Russell.

I have just been able to get the Elsema remote to work for a distance of 3.3k. The aerials I was supplied did not have the cable shielding connected to the plug. Correcting this seems to have helped.

I was not able to test it further than 3.3k line of sight.

Russell

Hello Russell,

I am going to take a guess and say you are experimenting with the

151MHz products? Do you need an omni-directional antenna pattern or is your requiremnt point-to-point? If the latter, you could consider using a directional antenna with a few elements to give you a directional gain increase. Using one of these on each end would probably improve the range quite substantially. You could also try horizontal, rather than vertical, antenna polarisation. For a number of reasons, signal to noise ratio is often better using horizontal polarisation. An antenna for the 144MHz amateur band could probably be pressed into service if you wanted to experiment a bit.

Andy

Thanks for the info. Andy. Yes I am using the 151Mhz products. I had considered a directional antenna, but did not know where I would find one. For this project I need two receivers that are not quite in the same direction from the transmitter. The transmitter could use an omni-directional antenna, and the two receivers could use a directional antenna. Your comment about horizontal polarization is very interesting, I will keep it in mind.

Thanks, Russell.