Low cost APRS !!

I had no transmitter module, to test my new Arduino sketch except the low
cost JMR-TX1 module. For my surprise it works like a charm and succeeded
to transmit packet frames without missing any,  just like a robust FM transmitter
module !!! .
On spectrum analyzer I noticed a lot of noise, but a simple output filter can
boost using of this cheap  low power module for more lab and field experiments.