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JR Radio Compatibility

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Old 09-24-2003, 12:54 PM
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Joe Spitfire
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Default JR Radio Compatibility

I have a JR programmable radio with 3-model memory. My question is the relationship between that radio and other brands.
I have an additional JR receiver I will use on one of the additional planes. Will either a Futaba or Airtronics servo plug into the JR receiver without modification?
I also have a Futaba FM receiver. If it is on the same channel as the JR transmitter, will they work together?
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Old 09-24-2003, 01:37 PM
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JWN
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Default RE: JR Radio Compatibility

Servo question. Yes, all Futaba, JR and Airtronics (with Z connector) servos are 100% compatible across the board. You will need to shave the alignment tab off of the Futaba servo to plug it into the JR receiver. Match up the white signal wire on the Futaba servo with the orange wire on the JR's to be sure you plug them in the correct way. The model I'm currently flying has a combination of Futaba, JR and Hitec servos all of which are plugged into a JR receiver.

No, the Futaba receiver is not compatible with JR transmitters.

John
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Old 09-29-2003, 10:08 AM
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wolffsoft
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Default RE: JR Radio Compatibility

Hi John... What is a compatible receiver with JR tramsmitters (besides JR, I mean)?
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Old 09-29-2003, 11:11 AM
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Default RE: JR Radio Compatibility

Both Hitec and FMA Direct makes receivers that are compatible with JR.

John
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Old 09-29-2003, 11:30 AM
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wolffsoft
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Default RE: JR Radio Compatibility

Oh good deal John... And if I wanted receivers compatible with either JR and Futaba transmitters, would the answer be the same?

Thanks!

Bill
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Old 09-29-2003, 11:56 AM
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Default RE: JR Radio Compatibility

On 72MHz, not all are cross compatible - some have switches, others are build to a certain shift. On 50MHz, all Mfg. use the same shift, so there are no compaitibility issues to begin with.

- Tim
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Old 09-29-2003, 02:17 PM
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wolffsoft
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Default RE: JR Radio Compatibility

Hi Tim... Is this 50MHZ compatibility still true for PCM setups?

Thanks!

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Old 09-29-2003, 04:58 PM
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Default RE: JR Radio Compatibility

No. There is no standard PCM encoding, so while the shift will be correct, they will be deaf to each others signals.

- Tim
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Old 10-05-2003, 12:55 PM
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Default RE: JR Radio Compatibility

Thanks Tim... I've have been studying all of this and apparently those using 35MHZ systems also appears to have one common shift polarity as well. And it sounds like 72MHZ would have been the same as well, but Futaba (in the US) just wanted to be different.

http://www.rcuniverse.com/forum/Can_...1171091/tm.htm


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Old 10-06-2003, 11:18 AM
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Default RE: JR Radio Compatibility

Both Hitec and FMA Direct makes receivers that are compatible with JR.
Airtronics receivers are also shift-compatible with JR.
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