Yes those are SPI module. The green one does not have power amplifier.
It can use to receive as well. The yellow one looks like have a RF amplifier.
Originally Posted by blackmoon
Some pics of the 2403 and 2603 module, they resemble the one on the devo 8.
I for one will try the conversion, if you provide the code.
25$ is cheap if I can have 80 % of deviation power and usability.
The TX is gathering dust anyways, it would be a nice take anywhere tx.