Transmitter suggestions for long range

[Darin Jordan]

From my 10 years or so racing 1/10 scale ep on road around Australia, I never knew that lol. Thanks mate.


Such great advice here, Thanks a lot.

Please keep in mind that I'm referring to the current batch of MR series receivers from Spektrum specifically. Others may be different.

[beau0090_99]

Darin,
You're right, if there are any 2.4 antennas that are longer than 31mm, the extra part that looks different is the coax cable. The active element is going to be some factor of 31mm since that is the quarter-wave length of 2.4gHz. You can amplify your antenna by making it a dipole (changing that coax to run the shield back down the gray part another 31mm), but that is advanced and if done wrong you can shorten the reception range too. What we have in our radios is more than enough range for most hobbyists, even those that need to run out beyond the rocks. The key is to make sure the antenna is elevated above the water (the ground plane) and make sure it is never in a position to point directly at or away from you. This is the benefit of the diversity Rx (2 antennas at 90 degrees), if one of those is pointing at or away, then the other is perfectly perpendicular to you and in full gain. An antenna tube that elevates it up off the water and keeps it fairly straight up is great. Also, keeping your Tx antenna mostly straight up will couple better with the the vertical Rx antenna.

Have fun,
Curtis