Again there was some discussion over the week end as to which radios can be used with which.
In a nut shell it seems that apart from the obvious, JR with JR etc, the list is very short!!
JR with Spectrum & visa versa.
Futaba with Hitec & visa versa.
To buddy box JR/Spectrum with Futaba/Hitec cannot be done with a simple buddy lead. This is because JR/Spectrum use a positive PPM signal and Futaba/Hitec use a negative PPM signal. This can be fixed by using an inverter, simple circuit in the buddy lead powered from one of the radios internal butteries, but then the channel allocation seems to be different as well e.g. channel 1 on JR/Spectrum is throttle and on Futaba/Hitec so the buddy radio would have to be reconfigured, not sure if this can be done on computer radios in one of the memory locations.

Some of the other brands comming out of Hong Kong, WFLY, that we have been asked to look at seem to have PPM output for use with a simulator which is the same as the buddy connection on the JR but the do not have a trainer switch so cannot be used as a master TX.

I have not tried any of this and will be away enjoying Warbirds over Wanaka for the next 3 weeks so I will give it a look at then.

Attached is some technical info I got off the internet for those that are interested.

Also look at this website: users.belgacom.net/TX2TX/tx2tx/english/tx2txgb1.htm

Would not let me upload info but it is all on the TX2TX website.

Dave, just a thought regarding the WFLY stuff that is popping up. Its not currently on the MAAA authorised list for 2.4 so if you ask the MAAA they will tell you that you will not be covered by insurance in the event of an accident. Anyone who is using this gear should have this pointed out. I suspect that the club's position should also be that this gear is not permitted to be used at our field. Of course, its pretty hard to tell someone who has shelled out good money in good faith that they wasted their money. My understanding is that provided the gear complies with the ACMA requirements (which it probably does as it does as it has FCC certification (not sure if it has a C Tick)) that it is not "illegal" to use in Australia, however, the MAAA loves to make up their own rules and always use the big stick regarding insurances etc.

Hi Michael,
You are correct regarding the C Tick and the WFLY equipment. I must also agree with your comments regarding the MAAA and the "big stick" attitude regarding insurance. I seems funny that when we were on 36Mhz, Australia is the only country that uses 36Mhz for RC so it was a rather captive market, there was no C Tick on any equipment or any requirement for any equipment to have said C Tick. It was left to you to take your brand new RX&TX and have it bandwidth tested at your expense before it could be used.
So as we are a MAAA club we will steer clear of the "Non C Tick" gear and only use "approved" radio gear. Fortunately as mentioned in my previous post the WFLY equipment cannot be used as a buddy box as it does not have the trainer switch.