I just recently changed the crystal in my hitec reciever so i can fly my LT-40 with my Airtronics RD6000. I had to change the shift from a + to a - so it would work with the reciever. The only problem now is that my stepdad wants to see wut its like flying rc. Yesterday i was messin around after i changed the crystal and hooked up the buddy box. When i switched it over from the master to the buddy box, everything went crazy like before i switched the modulation. This has me stumped. I thought the buddy box runs off everything from the master ( ex. frequency, modulation etc). As soon as i let go of the trainer switch everything went back to normal and i could control everything with the master. Any help on this would be helpful. I emailed airtronics but havent gotten anything back yet.

Have you used this master/buddy combination before?
If not, is the servo reversing correct and all trims matching?

You may also want to ask in the Hitec manufacturer support forum:
http://www.rcuniverse.com/forum/forumid_53/tt.htm

Be sure to list exactly which models of master and buddy you are using as well as the receiver model. Even the buddy cord type may be important. And state whether the combination worked before or not.

I am using airtronics transmitters, its a hitec reciever, i switched the modulation so i can use airtronics with hitec

Are the 2 TX's compatable and do you have the right cord. You can mix RX's but not TX's.[X(]

We know you have a RD6000, what is the buddy box? Is it just a buddy box or another regular tx in buddy mode. Please give a specific model number.

I tried to do the very operation that your trying. I have an RD6000 with a VG400 for the buddy box. The VG400 is not switchable so I guess that's the reason it would not work for me.
FEB

I'm thinking (not sure) that there are functional electronics inside your buddy box that also need to be switched, if possible. If I'm correct and they can not be switched, then this particular combination may be unusable.

Again, check with Airtronics for specifics. Maybe a shop like Radio South could give you information also.

Just thought of a question that was missed. You are leaving the power switch on the buddy box turned off, aren't you? If turned on, this could be your problem.

The cord is hooked right to the buddy box. its not detachable. I used this buddy box with the RD6000 on my tiger 2(it was my first flight on it) with an airtronics reciever and it worked great.


It says airtronics at the top, trainer system by sanwa at the bottom, all it says


The power switch is not movable, it is stuck in the on, tried moving but it wont budge.

And it isn't just a matter of servo reversing switches on the buddy box?

Can you define "went crazy" a little better?

I dont think it is the servos. Alright, when i first put in my new crystal and turned on the tx, i switched to my lt40 model. The as soon as i did that, everything went one way and locked up, it would barely move. I changed the modulation (shift selection thing) and everything was fine after that. I hooked up the buddy box, and when i switched it over, everthing went like it was before i switched the modulation.

I hear Futaba make a nice radio. All kidding aside, I think you should make an effort to contact Airtronics for this one. It may be something to do with the SANWA buddy box just not being compatible in that configuration. I truly don't know. Sorry. If you call them or email, have ALL of your information above available.

Airtronics Inc.
1185 Stanford Court
Anaheim, CA 92805

Phone: 714-978-1895
Fax: 714-978-1540
E-Mail: [email protected]

i emailed them just waiting for an answer

Good luck with this. Be sure to let us know when you find a resolution.

will do, should get an answer tomorrow

I think this will answer your question... I copied and pasted it from the pdf version of the manual.....

"Both transmitters must be programmed identically for the trainer system to function properly.
All servos must operate in the same direction, centering, end points, and other settings
such as type of Modulation must be identical."

Edit:Correct spelling mistrake

I used the Airtronics RD6000 and the Airtronics Buddy Box during my training, and still use that combination when others are using the trainer (my trainer with Airtronics components). The buddy box will work with any Airtronics system including, I believe, the Stylus (but who would spend all that money on a first radio). That combination will only allow for basic operation without any of the extra's that the RD6000 has. The only exception to this is if you use an RD6000 with an RD6000 as a buddy box, AND that they are both programmed identically for that particluar model.

Hitec says that it is compatible with the Airtronics, but I've never seen that combination used in training. That doesn't mean it can't be done, just that I've not seen it at our club. In our club, we have sufficient trainer boxes (buddy boxes) for all of the most popular radio types so we don't normally have to go through mixed combinations like Hitec and Airtronics. In fact, when I first got my NexSTAR with the basic Futaba system, I thought we were all set but the buddy box connectors were different. We had the old type (round connector) and my transmitter had the new type (square). They (Futaba) makes an adapter, however, I opted to buy a new Futaba buddy box with the right connector then donated it to the club when I was finished with it. I then changed my NexSTAR from Futaba to Airtronics to support the computer capabilities of the RD6000.

DS.

See thats was has me and my instructor that taught me stumped, i got this from him to borrow, i used it on my tiger 2 with airtronics reciever worked perfect. The buddy box on the hitec rx won't work. I thought the buddy box runs off everything from the master tx, so the only thing u would have to change is trims and servo reversing.

There is either some electronics in the "buddy" box modulating wrong or plugging in and activating the "buddy" causes your master to change back to the orig modulation somehow. Anything back from Airtronics yet?

It is quite possible that since you have to shift the modulation that you got a "Futaba compatible" Hitec receiver instead of the "Airtronics compatible" receiver that is the opposite shifted modulation. That's why when the buddy box trys to take over, the signals are reversed and the servos try to rotate 180degrees. I BET if you plug it all in to the Airtronics receiver and shift the RD6000 back to the correct modulation to match the receiver and the buddy box it will all work.

I have an older Airtronics PCM receiver that I tried to get working with my RD6000 and when I shifted it to PCM1 an got no response, but on PCM2 it responded, but not correctly. So I would only use a receiver that is the correct modulation type for your txmitter. Whereever you purchased the Hitec rxer from, you might try taking it back and exchanging it for one that has the reversed polarity from what the one you have is.

cant take it back, reciever is more than a few years old, i bought him from a guy who bought it from the guy that built it because he didnt like the hobby. No reciepts or nothing, the servos arn't reversed, but when i get home ill mess around with them.

UPDATE


airtronics says the modulation has to be right on tx and buddy box[&o]

Your welcome

Shouldn't be too hard to swap out for your other receiver while you give your Dad some stick time.

ya, id rather swap it, put also its a pain, its not hard to do, just takes a while to take it out and re-run the antenna

But Dad will appreciate it, and that's what matters.