i have a new cobra 25 ltd with a rfx75 installed .after installing the rfx75 the radio will not transmit i have check all the connections over and over again. i hooked up another radio up beside it i can here my self when i key the mike on 25ltd. the pa and the receive works fine .just no transmit out put power. i have pics i took of the rfx75 install if needed.thanks for any help on this.---unit. ps the radio worked fine before installing rfx75.