I've played guitar for a long time and ive always loathed all of these cords. I'd seen these wireless transmitters but they're always more than I'd like to spend so when i had a revelation on how to make one for $30 i just had to share it with the world.
Step 1: Get the Supplies
you will need only a few things
1. a pair of cheap walkie talkies that dont have a timeout but do have noise cancelling
2.a guitar cord of decent length
3. a soldering iron/solder
4. universal screwdriver
6. donut of your choosing
7. and, of course, DUCT TAPE
Step 2: Disassembling the Radios/ Guitar Cords
due to the fact that i dont know which radios you're using, ill just tell you to remove the cover however possible, without damaging the board of course. remove all of the electronics and set them aside, be sure to also disconnect both radios and microphones. then cut the guitar cord in half, or to a decent length and strip both sections of wire for just under an inch.
Step 3: Making the Transmitter
for the transmitter, first heat up the soldering iron. after that take one half of the guitar cord and solder it directly to the leads where the mic used to be. mine wouldnt stay soldered due to paint on the chip so i used some dual audio wiring, you know, the kind they use for stereos and taped it to the leads/ cord. you will need to make sure that it keeps transmitting so either solder bot sides of the switch together or stick something in there an tape it to keep it on. if you have a radio that automaticlly shuts down after a period of time the entire project wont work.
Step 4: Making the Reciever
this is basically the same process as step 3 but with the speaker instead of the mic. be sure to reinforce it with duct tape or the solders will come undone, do this with both radios
Step 5: Appearance/settings
if you want to you can make a hole and reattatch the cover, or you can leave it off for that signature duct tape and circuit boards-DIY looks, witch i prefer. on both radios also make sure the noise canceling is on because i ran into some pretty nasty interference myself.
Step 6: Using Your Wonderful Creation
plug the reciever into your amp and plug the transmitter into your guitar. tweak wherever nessisary and last but not least ROCK OUT.