R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Radio and Electronics

Reply
 
Thread Tools Search this Thread
Old 11-10-2011, 11:21 PM   #1
Tech Apprentice
 
Join Date: Sep 2011
Posts: 81
Default Receiver/transponder interference...

Had an issue today... I was running a club transponder and it was causing interference with my receiver, as if someone else was running the same frequency.

I run a 27mhz AM setup for my F104 and anytime I put the club transponder near the receiver it was glitching. I have never had an issue before and been running this setup for quite a while now.

Last night I did resolder the ESC to the motor with new wire... but apart from that nothing else has changed. Did try another receiver exactly the same and the same thing happened!?!?! Moved the receiver to another place and didn't have an issue after this.

Anyone have any ideas?

PS did try another club transponder and same thing happened.
FST4RD is offline   Reply With Quote
Old 11-11-2011, 09:22 AM   #2
Moderator
 
MarkA's Avatar
 
Join Date: Aug 2001
Location: Corvallis, OR
Posts: 9,003
Trader Rating: 21 (100%+)
Default

Are the club transponders the old, very large ones? Those things can be overpowering to old AM systems so moving the receiver away from it was the right thing to do.

As for other ideas:
Are you running the old brushed silver can motors than many clubs do in F1 classes?
If you are, do you have capacitors on the motor?
If you have the capacitors on, did one or more of them get damaged/overheated during the re-soldering process?

On AM, anything, and I mean anything can cause interference. Even the cheapest brand-name ( example here ) 2.4 system would immediately solve all your issues and make for many more happier trips to the track.
MarkA is offline   Reply With Quote
Old 11-11-2011, 01:39 PM   #3
Tech Master
 
RC Dad's Avatar
 
Join Date: Jun 2007
Location: Bismarck
Posts: 1,355
Trader Rating: 26 (100%+)
Send a message via MSN to RC Dad
Default

oh, the joy of AM glitches.
Another thing to check - make sure none of your motor or servo wires cross the antenna wire from the receiver. Check this wire often to make sure it hasn't broken inside the insulation, or rubbed through.
__________________
GV2 Pro, XXX4G+, Blitz SCT, CRC GenXL
RC Dad is offline   Reply With Quote
Old 11-11-2011, 03:41 PM   #4
Tech Apprentice
 
Join Date: Sep 2011
Posts: 81
Default

Awesome guys thanks!
Yeah old silver can motors and the big old transponders. When I soldered up the motor I think I might have changed the route of the odd wire...

Working fine again now that I moved the receiver.

I did buy a KO PROPO EX-5UR setup with 2 receivers (as I just built a Pro10 which I will be racing) but you need digital servos and I only have analogue ones So I'm saving at the moment to get a couple decent digital servos. I did try the system with the analogue servos but it was no good...
FST4RD is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Is there any disadvantage to mounting my transponder inside my receiver box? Ryno RC Nitro Off-Road 21 09-03-2009 04:22 PM
Stealth PT - New PTX Personal Transponder Terry_S Electric On-Road 591 06-26-2009 06:27 AM
40mhz RF interference help needed....? subzero Electric On-Road 6 05-26-2006 04:04 AM
Motor Fan Interference JL Electric On-Road 10 05-17-2006 01:49 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 02:18 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net