Trying to send a short pulse signal on adafruit 32u4

Hello

The main goal of my project is to send a short pulse every few milliseconds with the Adafruit Feather 32u4 with RFM69HCW Packet Radio - 433MHz. The only documentation I have seen so far uses the RFM69 library to broadcast frames . My current solution is modifying the code in RFM69.cpp and trying to strip all the headers in a frame and send it with the some dummy data.

My question is , is there a better way to do this (instead of just hacking the library code). Even with this modification the signal emitted by the chip looks weird I have attached a picture below

I have attached my modified RFM69.cpp code below

RFM69.cpp (38.5 KB)