JR Crystal Question
08-02-2011, 08:09 AM
#4
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RE: JR Crystal Question
The advertizing doesn't say if it is a single or dual conversion crystal ( it makes a huge difference! ), but the grey packaging is normally used by the Dual Conversion crystals, while the single conversion crystals have no gray packaging/holder.
08-03-2011, 11:57 AM
#5
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RE: JR Crystal Question
Actually, JR dual conversion crystals are in a red package. JR single conversion are in grey. And most JR FM receivers are single conversion with the ABC&W thingie which filters out noise. There are only a couple of JR dual conversion receivers out there, and the one in the picture isn't one.
So yes, it looks like the correct crystal.
(btw, this is why a "normal" JR crystal doesn't work in Futaba or Hitec gear, but I've seen plenty of guys interchange Hitec and Futaba crystals. Not a good idea, but it works most of the time since those are both straight forward dual conversion setups)
for more info;
http://www.jrradios.com/Search/Defau...ual+conversion
http://www.jrradios.com/Search/Defau...chTerm=crystal
http://www.jrradios.com/ServiceCenter/FAQ.aspx
So yes, it looks like the correct crystal.
(btw, this is why a "normal" JR crystal doesn't work in Futaba or Hitec gear, but I've seen plenty of guys interchange Hitec and Futaba crystals. Not a good idea, but it works most of the time since those are both straight forward dual conversion setups)
for more info;
http://www.jrradios.com/Search/Defau...ual+conversion
http://www.jrradios.com/Search/Defau...chTerm=crystal
http://www.jrradios.com/ServiceCenter/FAQ.aspx
08-03-2011, 12:31 PM
#6
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RE: JR Crystal Question
You're right... I had forgotten about the JR's being single conversion on all but some of the higher channel count RX's.
I still have a few JR 72mHz RX's with the Red Packaged crystals.
I still have a few JR 72mHz RX's with the Red Packaged crystals.
08-03-2011, 03:06 PM
#7
Thread Starter
RE: JR Crystal Question
iim glad i ordered the right one 
i dont have a problem still using 72 mhz stuff, i fly all my glow planes on 72 and havent had any problems in the past or present. They can be had pretty cheap.. i remember when i used to pay 129 for the 9ch 649 pcmS receivers.... now they can be had for peanuts
i dont have a problem still using 72 mhz stuff, i fly all my glow planes on 72 and havent had any problems in the past or present. They can be had pretty cheap.. i remember when i used to pay 129 for the 9ch 649 pcmS receivers.... now they can be had for peanuts
sorry.. to much exposure to 2.4GHz... 
