2.4Ghz AM Radio

[RPC1]

I took my Futaba 2PL AM radio and put an Assan 2.4Ghz Hack Module in it. Could not have been simpler to do. Solder three wires, drill a hole for the LED, screw antenna on, done in 10 min. This has worked great in the Whip 20, no glitching, solid performer IMO.

[Brushless55]

Wht did that cost ya?

[RPC1]

Tx-$59.99
http://www.hobbycity.com/hobbycity/s...dule_(PPM_Only)

Rx-$24.50
http://www.hobbycity.com/hobbycity/s..._(Long_Antenna)

That is the great thing, the Rx is only $25. So I can have all my toys going for just $100. They do have plug in modules that are "plug and play" for JR, Futaba, and Hitec.

http://www.assan.cn/

[theShark]

nice, have you tried it in a cf hull?

[M.M.]

Will this work with FM, for example an airtronics cx2p?

And what does it mean by PPM?

[RPC1]

nice, have you tried it in a cf hull?

No I have not. Just for clarification, it is not a diversity receiver. One antenna is a ground plane, the other is the actual antenna. It is not frequency hopping also. But it is a standard digital 2 way link(the Tx and Rx talk to each other). The fail safe works great. It sets all channels to their neutral setting from when the Tx was turned on. The only problem I have see is when the voltage gets too low(below 3 volts), which should never happen anyway.

[RPC1]

Will this work with FM, for example an airtronics cx2p?

And what does it mean by PPM?

PPM= Pulse-position modulation, that's all I know. Most all Transmitters are PPM. Yes it will work with AM, FM, and replace 2.4Ghz system modules. What you are doing is removing the old transmitter module(AM/FM) and replacing it with this 2.4Ghz module.

Yes it will work with the Airtronics CX2P. Where the crystal goes in the Tx is where the FM module is located. Pull it out and there will be three wires coming from the board(+pos/-neg/signal). This is where the new module will get soldered in. Once you see it, it is quite simple.

[M.M.]

Ok, but on the cx2p it has the FM module that clips in there. So do i take the mdoule out, or but the 2.4 inside of the FM module.

[egneg]

Ok, but on the cx2p it has the FM module that clips in there. So do i take the mdoule out, or but the 2.4 inside of the FM module.

The ad says any non-module based PPM radio.

[M.M.]

Well that sux

Oh well, i want a spectrum anyways.

[SweetAccord]

I took my Futaba 2PL AM radio and put an Assan 2.4Ghz Hack Module in it. Could not have been simpler to do. Solder three wires, drill a hole for the LED, screw antenna on, done in 10 min. This has worked great in the Whip 20, no glitching, solid performer IMO.

I plan to copy your layout on my FM Futaba 3PM. I like how you did the Assan LED on the back of your Futaba, as it seems the best layout on that radio. I just got the Assan also after seeing it perform flawlessly many time and have read only positive reviews. The receiver is so small and thin. I see the one you got but they have an even smaller one X8R4H if maybe you have not seen those. They are hard to get.

I'm wondering how did you find/determine the PPM signal line on your Futaba? Was it marked PPM? I have these pins on my Futaba;

HRS/PPM
CE
CK
Data
RF SW

______________

VDD
SIG
G

I know the G=ground, the VDD is the VDC of 10.5 V off the battery pack simple enough. I'm trying to figure out if the PPM is truly the correct line to tap or is it the SIG line (the VDD SIG and G are grouped together by the way). The true way is to use an oscilloscope but I don't have one. My PPM is a white wire and so is the SIG line. Did you find voltage on the PPM line of something of 1~2.5V?

Thank you in advance.

[RPC1]

I don't remember. But the three wires were attached to the AM module. If they are grouped together then yes SIG is the PPM line. So you know, the receivers are not water proof. I epoxied the board applied a heat gun to let it thin out, and it still works great.

[SweetAccord]

I don't remember. But the three wires were attached to the AM module. If they are grouped together then yes SIG is the PPM line. So you know, the receivers are not water proof. I epoxied the board applied a heat gun to let it thin out, and it still works great.

Thank you ever so much for that info!!! I owe you one.

[SweetAccord]

I converted all my FM to the Assan's. They work great, no range or glitch issues and the receivers are smaller than anything on the market hands down! The one posted by Doggett and RPC1 (above) are small, but there is a smaller one that I use. The 4 channel X8 R4 Size: 36 X 14 X 3mm (1.97 X 1.02 X 0.39 inch) Weight: 3.2g.

The X8D works great on pistol type radios. On a Futaba 3PM 75MHz radio the X8D fits as if was made for it. No modification to the antenna mount was needed. All you need is to find a spot where you want to install the X8D as there is plenty of room in the Futaba's radios.

Radio install of X8D: There are 3 lines grouped together on the break out board that you need to look for:

VDD (Futaba) = Power goes to Assan +
SIG (Futaba) = Signal line to Assan (PPM)
G (Futaba) = Ground to Assan

All the other lines which are HRS/PPM, CR, Data, RF-SW and Ant are to be unsoldered; place a long piece of shrink tubing over them and pack away as they are not used. The board is also removed as it's held by 3 screws.

Pics:

http://cid-ace3bbbe72a55299.skydriv...IMG%7C_0849.JPG
http://cid-ace3bbbe72a55299.skydriv...IMG%7C_0850.JPG
http://cid-ace3bbbe72a55299.skydriv...IMG%7C_0851.JPG
http://cid-ace3bbbe72a55299.skydriv...IMG%7C_0852.JPG

Also it was confirmed by Futaba that the 3PM 9.6v system WILL operate up to 12v and if a 11.1v lipo is used it will not void the warranty and will operate properly even to 12.1 volts. I also learned today that the X8D will work fine with the 11.1v lipo battery.

Hope that helps.

[BILL OXIDEAN]

Will this work with FM, for example an airtronics cx2p?

And what does it mean by PPM?

Now that's an oldie but GOODIE!!