I fly with JR equipment, tx,rx and servos, all on chn 40. What is the deal with trying to find a crystal? Every place I look online and LHS withen 200 miles are sold out of the crystal. I looked on Horizan Hobby today and they said the crystal was out of production. I would have posted this on the JR forum but its closed. Can I buy that spektrum radio modual to my JR 600 radio so I dont have to worry about freqs?

Runt:

Sorry about the channel 40 problem, don't have any information on that situation. But I can tell you that the JR600 is not convertible to 2.4. [&o]

Happy Landings!

Exactly what crystal do you need?
Channel 40 is 72.590 mhz. I searched Horizon for 72.590 under JR radio parts
http://searchrc.horizonhobby.com/ind...demandrank%7c1
They have 4 items listed as available to order
FM Receiver Crystal
FM Crystal Set
FM Transmitter Crystal
FM Dual Conversion Receiver Crystal

To answer the question about using a Spektrum module in your transmitter, you need to list the exact transmitter that you have.
If the transmitter has a large removeable frequency module in the back, you probably can do it.
If it has a regular crystal in the back, or front, you cannot use a Spektrum module in it.

I was trying to put a Hitec 5 chn RX in a foam plane. The RX takes a single conversion crystal that is what I can not find. Maybe I will start to consider getting a spektum!

http://servocity.com/html/fm_am_sing...on_air__6.html

if it's a hi tec rx you should be looking for a hi tec crystal

That's totally different. I searched for JR cryatals. You need a Hitec crystal for your Hitec receiver. www.radicalrc.com is one source

The direct link in post #5 is the proper Hitec Crystal and ch 40 is avaliable 7.95.