[Amps] MRF151G Vs VRF2933

[Roger (K8RI)]

Richardson shows the VRF2933 running into a short and an open, then back 
to a 50 ohm load where a pair still put out 1200 watts at 65 volts. The 
VRF2933 is rated for 300 W carrier at 50% efficiency. HOWEVER,  the 
signal is pulsed at 20% duty cycle. A pair running PP at 65 VDC put out 
1200 watts. After shorting and going to an open circuit, they switched 
back to a 50 ohm load and was still putting out 1200 W. Actually a 
little more.

They did not perform the same tests on the MRF 151G also rated at 300W 
RF but about $9.00 less.  The 300 W out with the 151G was not pulsed and 
again was at 50%

Any thoughts?  Any better transistors?


73, Roger (K8RI)


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