hey guys , not sure if i stuffed up but put this in a blog ...so he i go again....
short story MHZ....??? i have a 35mhz setup ...came with rtf plane ...i am a novice pilot so built a coreflute (spad) plane to crash,
transfered all the running gear and gave it to an expert pilot to try my design (he had so much fun..didn't want to stop) here's the thing ..his tx is on 36 mhz he put his 36mhz rx crystal into my setup and away he went .....35meg is not Australian compliant so i bought some 36meg crystals(tx&rx) and away i went....i see transmitters and receivers being sold in diff mhz's without crystals ....so what's the go ..why can i put 36's in a 35 setup and have no probs???? this one is hurting my head...any input would be welcome.

Probably because the two frequencies are so close together. But, the receiver may not be quite as sensitive on the other frequency as it is on the one it's tuned for which will effect the receiver's overall range. However, if you tried putting a 72 MHz crystal in a 35 or 36 MHz receiver, it probably wouldn't work at all even considering that all other things were equal (AM vs FM, single conversion vs dual conversion, etc.).

In the US, our FM commercial radios cover from 88 MHz to 108 MHz using a single receiver.
I realize these radios are designed to cover that range, but they will also receive outside those frequencies, although to a lesser degree. It's the mechanical or electrical programming that prevents the receivers from going outside their designed frequency range, not the capacity of the receiver's tuned circuits.

Cheers Bill,

that does make some sense...i was intending to go for a fly this morning ...range check will be a must do.
You have touched on another subject i want to understand though. i am moving up in quality of my radio gear....going JR.
question....single vs dual conversion....what's the difference and does it really matter ?

thanks, Dean.

dual conversion is far superior than single. Sorry i can t say technically why, buti have experienced bout in park flyers, and got lost of glitches on singal converson on ch 41, and went to dual conversion and no more glitches

TC

Thanks TC

out comes the wallet again....i am loving this sport (can't all it a hobby) and the more info i get the better....still getting my head around radio setups...but having an absolute ball learning....if you get time (didn't want to post here as vid is crap) check out 3D COREFLUTE on youtube ... me = 120grubby...couple of planes i have built......ps ..the pink 1 is now at the local sugar mill being processed.

thanks again to all,

Dean...

In simple terms, single conversion is like having one filter while dual conversion has two. The more filters there are the more unwanted signals are removed.