So how much already ??
... i just found a power supply that delivers 50V @ 60A .....
Mike KC7NOA
> Date: Sat, 23 Jul 2011 16:04:49 -0400
> From: jeff@wa1hco.net
> To: garyk9gs@wi.rr.com; Amps@contesting.com
> Subject: Re: [Amps] New NXP BLF578XR 1200W LDMOS FET is "indestructible"
>
> Gary...
>
> Some YouTube videos...
> http://www.youtube.com/watch?v=02v58cnb41o&feature=relmfu
> http://www.youtube.com/watch?v=-EACUpIhpac
>
> F1JRD also has an article in Dubus
> http://www.qsl.net/f1jrd/MRFE6VP61K25H.html
> http://www.w6pql.com/1_kw_2m_ldmos_amplifier.htm
>
> jeff, wa1hco
>
>
>
> On 07/23/2011 12:24 PM, Gary K9GS wrote:
> > Hello Jeff,
> >
> > Any pictures available of the copper heat spreader, aluminum plate, etc??
> >
> > On 7/23/2011 10:34 AM, jeff millar wrote:
> >> This email describes what I've learned from looking at these modern
> >> transistors
> >> for the last few months. It seems to me like a fundamental crossover
> >> point has
> >> been reached. Silicon processing technology has produced rugged VHF/UHF
> >> transistors, with reasonable impedance matching for a reasonable cost,
> >> especially considering all the other costs associated with an amplifier.
> >> These
> >> parts will only get better and cheaper as time goes on.
> >>
> >> Brian, WA1ZMS, brought a dual MRFE6VP61 on 2 meters (2 x 1250W) to the
> >> last VHF
> >> contest. The parts are $271 each at Digikey...
>
>
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