I have assembled in custom cabinets a NRG PLL Pro 3, 1 to 4 watt mono transmitter, NRG Pro 4 stereo encoder and the NRG Limiter-Compressor. This was my personal broadcast station that I no longer need. Units are in very well made cabinets with the mono transmitter being fan cooled. They have very small amount of air time on them probably no more than 3HR total for all units. $500.00 for all units. For more detailed information and photo's of these items go to my home page at http://hometown.aol.com/spokwa467/FmTransmitters.html