I use an Aker amp and Icomm static burst unit, pretty basic and apart from upgrading the battery once I've had no issues
@ukswrath also supplies electronics
Tramp https://www.facebook.com/trooperamp
There are other options out there also, take a look in our Electronics area
Other info:
Recorded TK sound files
More here
TK background chatter, great to use on a MP3 player or similar device/card
https://drive.google.com/drive/folders/14vAaXe7vzNsBYuzQy8Ro2yc0sjnb5k7S?usp=sharing