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Hi Everyone,

I'm converted my 35mhz Futaba 6EXAP tx. Now it is 35Mhz + 2.4Ghz.
I'm using 2.4ghz normally, and i can use 35mhz when i plugged the 35mhz Xtal

Sorry my english not enough for details but you can watch the photos for some info.

You can read all details from our Turkish forum with google translate.
http://translate.google.com.tr/translate...ry_state0=

What kind of range are you getting with assan module ?
I'm looking for tiny TX module that would fit inside Wii Nunchuck
right now I'm using Airwave digital audio link to relay PPM, it is small enough but with 48k oversample I only get some 50pont resolution per channel (1ms PPM channel / 48k)
Cause you hack and modify everything I thought you may know of smallest module.

Hi fmkit,

I'm following your site every day and reading again and again your beacon with cc1070.
I want use your system for variometer, because best way is using FSK radios.

Anyway,
Assan modules have 800m range but my friend tested 1.5km and it working without any problem. You can add high gain antenna for maximum range.
Why you are using PPM transmission? May be you must program your microprocessor for different and safe protocol. You can send 8-10 bit data for every channel and regenerate your servo signals from cpu.

Small calculation;

If you send the serial(rs232) data over audio signal(or use rf data module), best frequency is 3600bps.
And mean, you can send 300 byte per second. If you have 10 channel with 8 bit resolution, you can send 30 times per second, and this is enough for remote control.

Use mini rf data modlues for small ranges or Xbee modules for long range.
XBee Pro 900 have 15km range (I want use it for making Longrange Safe RC Transmitter module for my web shop.)

you gave me good idea !
i'll just do rs232
these audio link modules used temporarily,
10mwTX consume 150ma and I feel the nunchuck getting warm in my hand, not efficient at all also serve its original purpose very well - i received crystal clear stereo audio 1km away while TX was on my balcony(4th floor).
I'm waiting for a -120db uhf receivers I ordered a week ago, these are 2.5gram each. When it comes to TX CC1070 chip does all: can transmit audio,video or data on thousands channels to choose from.

Have you seen these RXs ?
http://www.saelig.com/product/RW915DI002.htm

Hi,

Sorry i just see "Airwave digital audio link" , if it is digital, ok.
I suggest PIC16F88 if you using pics, it have internal rs232.
or atmega8 also best solution with higher cpu speed.

What is your processor chip on beacon?
If it possible i want buy one from you and reprogram for learning usage of cc1070.
It will be good Evaluation Board for me

ı just see the selig module, is it expensive for CCxxxx chip and some filter coils?
use xbee for this, cheaper and robus highspeed transmission over xbee encrypted network.

I quit PIC controllers few months after learning them,
Ubicom controllers from Parallax (SX28) looked better
and then I tried Cypress PSOC and realized that it's perfect chip for hobbist because of analog/digital mix.
The beacon board uses CY8C24423 chip, iriginal pupose of the board was advanced spy transmitter with VOX, compressor,limiter,AGC and multimode modulation. I'm only flying some 3years and needed beacon so I adopted the UHF transmitter. LCD was needed to adjust audio, for beacon purpose it's overkill.
I have multiple boards to fit CC1070, one has SOIC-8 pads for controller chip so you can solder PIC if you like. The CC1070 be permanently damaged by 5v so when in circuit programming you have to be careful. If you have also so interesting PCBs to experiment with we can trade.

the modules I use for RC link (temporarily till tiny UHF shows up):
http://www.airwave.com.tw/24GHz-Digital-RF-module.html

I have another nunchuck with CC1070 inside but ran out of tiny UHF RXs.

Hımm, I'm using only Atmel, Silab8051 series and PIC processors.

May be you can sell 2 cc1070 to me? I'm using Acceleration sensors, they burning with 5v too. I resolved problem with one serial red led And using bootloader is best option for uploading new firmwares.

I can share my experiment about cc1070 with you. This will my first time with CCxx chips, I hope i will produce long range secure UHF tx and rx with CCxx chips.

Hello everyone,

Can the convertion techniques here work for a Futaba 7C 2.4GHz FASST radio? "Meaning" is adding 35MHz transmission possible for such a radio?