[Amps] Why hasn't solid state replaced tubes?

[w8ji at contesting.com (Tom Rauch)]

>    For 1500 watts out it would take say... 4 - MRF154's.  Those probably
> would cost at least $1000 at an OEM level,

It is less expensive and more reliable to use multiple MRF150's. 

First, heat is spread out over a larger area. 

Second, the RF layout would be better

Third, cost goes down because component quantities increase

Last time I looked at wholesale cost, I could buy 20 MRF150's for $1000.

73 Tom