I have a problem with my install of an RFX-75 in a Uniden pc-66xl phillipines radio. I used the Cobra 25 install and this is what I got upon first key up. It didn't have a Dead key and when I talked into it had nothing on the meters. I then put my headphones on and keyed down for several seconds while whistling into the radio and finally I could hear a crackly modulated voice that slowly got louder and the power came up on the radio, then when I let go of the key it took a few seconds for it to build power(I could see my meter go slowly up) up to a dk of 12w and a PEP of around 45-50. I tried it a few times and figured I better get some help. So all in all it did not blow up, it slowly came up with power and crystal clear modulation when working, that being said what did I do wrong. The power supply I have is more than adequate (Astron VS-35m) so no way that is the problem, and microphone is definitely good. Is as if there is a capacitor not holding enough power or I did something wrong, but I did double check everything before and after I fired it up. Please help. THx