Why would you want to change the frequency?
You would want to change because of the contries regulations or because of some other reason.
for example: in Australia the frequency range that you are allowed is 5725Mhz-5885Mhz
What You will need:
- A Good Soldering Iron with a Small Tip.
- Multicore or Stranded Wire.
- Solder ( lead-free recomended since the rest of the circuit is lead-free).
- Patience ( this is really hard, you need a steady hand )
Step 1:
First we will need to cut open the heatshrink on the transmitter. After that we will need to pry off the rf shielding with a flat head screw driver( you will need to use a small thin one). Don't worry if you bend the metal like i did.
There is nothing holding it down exept clips.
for the rx you need to undo the screws on the case and then you will need to desolder the case using a solder sucker.
Step 2:
find some multicore wire that has some thin cores in it like this one
then you will want to find the solder pads you will need to connect to. for the transmitter you will need to solder these pads together.
and for the reciever you need to short these pins.
Step 3:
Solder Them.
After you have done that you finished product should look like this.
sorry for the poor quality of photo, All of these pictures were taken on my phone.
also the solder joints aren't great, since the wire keeps moving, also these are for function, not looks.
RX:
TX:
Step 4:
Put the rf sheilding back on.
and then put heatshrink over the tx and then shrink it (optional).
Done!
Other Infomation:
I changed this from 'E' band to 'A' band
Channels:
The rx Chip: rtc6715
The tx Chip: rtc6705
DataSheets:
The tx has a PA (Power Amplifier(to aplify th rf signal)).
if you want to have more channels then you can look at this article. http://www.hobbyking.com/hobbyking/forum/forum_posts.asp?TID=19732
Check my blog at: rc-fpv.blogspot.com.au
for more stuff.
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