[Amps] VHF amps available

George george at k4gvt.com
Wed Feb 25 14:11:38 EST 2015


Folks, I have three high power VHF amplifiers for sale.  Each uses four 
MRF-175GV, I have tested them to 500 watts output with on 22 watts input.
These are designed to operate class AB and C from 140 to 150MHz 
commercial use, each is mounted on a 3/8 inch aluminum plate, so 
mounting this to a heatsink is easy.
Originally they were made for key-down 24/7 operation combining outputs 
for high power commercial communications applications, however not ISM 
since the are AB.
They were designed for 28v operation, but work very well at 24-25 VDC.  
I powered them using two EVGA 80plus gold computer power supplies with 
the 12VDC outputs
in series achieving about 25VDC . The T/R switching will need to be 
added and of course adequate cooling.
Please check the link provided, if there is no interest in about a week, 
I plan to put them on Ebay.  Asking $350 each.

http://www.k4gvt.com/ebay/VHFamp//VHFamps.htm

73,
George, K4GVT



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