[Moon-net] Opinion on this e-bay item

[Hugh Duff]

Hi Ed.
I recently asked the same question and the consensus is that the ceramic 
substrate board cannot easily be reworked to work at 1296 MHz and 
furthermore, the FETs are internally compensated at 800/900 so the gain 
drops off to nil at 1296. Short of carefully popping the ceramic caps 
off the FETs to try and rework the dies, they're virtually useless for 1296.

I guess that's a big part of the reason why the amps are going for so 
cheap ;)

73 de Hugh VA3TO/NA3TO


Edward Cole wrote:
> E-bay# 350020534440
>
> RF Linear Amplifier 150W 33cm 800-900MHz Radio UHF
>
> Any opinons or experience with this amplifier?  Can this be made to 
> work on 1296?  Are the MRF897 and MRF899 transistors usable at 1296 
> and has anyone done a pcb to use them?  I would like to combine four 
> to get 250-300w.
>
>
> *****************************************************
> 73, Ed - KL7UW              BP40iq, 6m - 3cm
> 144-EME: FT-847, mgf-1801, 4x-xp20, 185w
> http://www.kl7uw.com     AK VHF-Up Group
> NA Rep. for DUBUS: dubususa at hotmail.com
> ***************************************************** 
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