Cleaned the desk and removed my unused amp. there is a 50 amp switching power supply under / behind this and the only current radio used is the 257hp the others are working radios but the cb's are 23 channel AM radios and the other 2 are 2 way radios. I have my radio hooked to the meter with 213 and out with LMR400 to my Maco 5/8 GP at about 60'.