OmniZel LC22WT 2-Way Radio "fx" Questions

...single channel transceiver that only operates on 49 MHz FM. The Maxon "49-FX" and "49-HX"  operate on 5 adjustable adjustable  frequencies. That radio has no ...

...radio has a pin of 2.5 mm (three black stripes). The radio is like it: http://www.decathlon.pt/PT/fx-500-56044219/ Now appreciate your time, greetings Rui Mendes they have it at wall ...

...doesn't work. It sends fine and receives with the earbud. You can tell it is receiving as the fx signal blinks when you send to it, you just can't hear anything. Hate to have to keep an earbud ...