Passive signal radiator for 2.4 Ghz? - RC Groups
Thread Tools
Jun 08, 2009, 11:42 PM
Registered User
Question

Passive signal radiator for 2.4 Ghz?


Some people that are heavy into AM listening have these. A separate antenna collects the signal from one or more antennas that resonate at the desired frequency, and then that signal is carried to an emitter near the radio reciever. Any ideas on using something like that for systems like Futaba and Airtronics where they only have the two antennas, unlike Specktrum and JR where they seem to hold the patent on spatial considerations regarding multiple antennae and satellite receivers?
Sign up now
to remove ads between posts
Jun 09, 2009, 01:49 AM
The reviewer
XJet's Avatar
Passive re-radiators have been used in a number of (non-model) applications over the years and they do work reasonably well when set up correctly. Many years ago I was involved in the design, manufacture and installation of some UHF PRs that worked pretty well -- but they were in a fixed position, as were the receivers they fed.

Once you mount them on something that's moving you can actually cause as many problems as you create due to the multipathing and phase-delays induced by the coupling mechanism.

What you gain on the swings you may well lose on the roundabouts.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Alert What is the maximum output for 2.4 GHz? Crazyrcer Aerial Photography 15 Jul 04, 2017 08:07 AM
Discussion Isthmus Piper XL / Soprano, OK for 2.4 GHz? zaptherio Sailplane Talk 4 Jan 18, 2009 11:06 AM
Discussion Hercules BEC only for 2.4 Ghz?? borneobear Radios 5 May 13, 2008 11:46 AM
Discussion Best Prices for 2.4 GHz DX 7/Futaba 7 ch WWAndy Radios 3 Jan 11, 2008 03:03 PM
Found WTB 8dbi Patch Antenna for 2.4 ghz gizmointhesky Aircraft - Electric - Airplanes (FS/W) 0 Mar 09, 2005 04:22 PM