Will I experience any issues if I mount my transponder directly on top of my receiver?

No you shouldn’t. The directions say not to mount it directly to an aluminum or carbon chassis plate. I’ve mounted them just about everywhere with out issue. Just keep in mind they don’t like carbon. You can even mount them vertically on the back of a Servo case without issue.

Ok, thanks!

Ehm... A transponder is also a transmitter. Yes, it is on a compleet different frequency but is still creating a magnetic field arround it which can have an influence on the receiver working or receiver signal strength when mounted on to of the receiver...

If you face problems like glitches, range issues or drop outs first you need to remove the transponder.

And yes, I have seen issues with transponders close to receivers.

You'll need to test it for yourself. AMBrc, MRT, or MyLaps PT?

I've NEVER seen anyone mount any PT ON a receiver, ever. So I can't comment on that. I have seen people have issues mounting a MyLaps vertical in one car but not in another. MyLaps, iirc, tells you to mount them flat (horizontal). I run AMBrc PT's both horizontal and vertical mounted on servos without issue. I also see all different brands of PT's mounted to aluminum and CF chassis's work without issues. Try it and see what happens. If you get glitches or miss laps, move the PT.

You guys should look more closely at pics of the pros cars. Many of them mount them on the side and top of the receivers with super short wires. The idea behind it is when they get a new car or switch chassis in a race, it’s one less thing to have to setup again. Just my .02

Pics are all over the net.

And those pro drivers have all the knowedge about radio technology?

Ofcourse, when it works it is fine, that is the standard aswer from most people but mounting a transmitter on top of a receiver is asking for problems. These guys do build a car to perfection and take care of no binding in what ever but stick the transponde in a way which is far from perfection.
Also mounting vertical is asking for problems, it will give a weak counting signal and going to far to the side of the track can cause a missing lap (and I have seen that happen also).

Best location: on top of the motor.

Hahaha. At least some one other myself is finding this amusing!

Lmao

Could you please explain how either of these 2 transmitters can create a magnetic field.

Dying on the floor laughing! I mean I guess I can see where he is coming from. If we had outdated radios, knock off recievers... or anything else crazy it may cause a problem. But the phrase “unlimited 2.4ghz models can run at once” does come to mind. And he stated that it’s on a different frequency already so that kind of contradicts both statements. I have been racing for quite a while. And I am in no way saying freaky stuff can’t happen. All I know is that in my tekno(mounted on top of the receiver) in my Mugen (mounted inside the radio box with the receiver) an on both my B6’s mounted on the Servo sideways I have never had an issue with interference or weak signal.

Can weird stuff happen, yes. Have I experienced it using up to date cars, servos, esc’s, motors, radios any of the above.... no, not when using common sense and testing many variations of all of the above. Heck I even raced indoors at an all concrete warehouse surrounded by concrete in every direction with up to a 100 radios/cars participating at events for 3 years and no one had issues. Furthermore I worked there and built over 20 different tracks there along with 2 other employees and a couple bobcats.

Again can freaky stuff happen, yes. But again I have never experienced this personally in many, many vehicles/and combinations.

All radio frequency energy has electric and magnetic field components. (That's also true of other electromagnetic radiation, such as light!) Transponders are much more effective at creating the magnetic component than the electric component since they work prinicipally by induction.

I think racer1812 had the best observations so far. The very short version is: It isn't a problem until it IS a problem. When it proves problematic, it doesn't hurt to go back to basics, like mounting the transponder as the manufacturer recommends.

Agreed

Spectrum/bandwidth isn't infinite. You can't run an infinite number of 2.4GHz models.