----- Original Message -----
From: Fabio Grisafi (IT9GSF) <fgrisafi@tin.it>
To: Steve Thompson <amps@txrx.demon.co.uk>
Sent: Monday, December 06, 1999 12:22 PM
Subject: R: [AMPS] MICOM1000 by MOTOROLA
> Thank you for the answer Steve... so you believe I can run much more from
> this amplifier. I just wish to have 1.5 KW output...
>
> The amplifier has two power supplies...each one with 48V 25A specs. I
> believe
> there is enough power to have 1.5KW of RF and four different amplifiers
> inside
> each one with four MRF150.
>
> (What is normally the Pin/Pout of these FETs ?)
>
> Also...if there is a good margin left....the power combiner should be
> capable of
> that higher power. The beautiful part of the amplifier is the harmonic
> filter section
> with 13 band pass filters (Big!), and also the relays section (Capable of
> ARQ).
>
> The only one problem is the band switching....the amplifier measures the
> frequency
> after a special pulse is sent by the motorola driver... (I believe I
should
> bypass this
> way and send band information from my IC765 directly to the filter
section).
>
> Thanks for your help, I send this message also to the reflector to see if
> somebody
> knows this commercial amplifier (MICOM 1000 by MOTOROLA).
>
> 73 de Fabio,
> IT9GSF.
>
> ----- Original Message -----
> From: Steve Thompson <amps@txrx.demon.co.uk>
> To: <amps@contesting.com>
> Sent: Monday, December 06, 1999 8:27 AM
> Subject: Re: [AMPS] MICOM1000 by MOTOROLA
>
>
> >
> >
> > -----Original Message-----
> > From: Fabio Grisafi (IT9GSF) <fgrisafi@tin.it>
> > To: amps@contesting.com <amps@contesting.com>
To: <amps@contesting.com>
> > Date: 05 December 1999 01:30
> > Subject: [AMPS] MICOM1000 by MOTOROLA
> >
> >
> >
> > >My second question: the manual says the amplifier gives
> > about 1000 W PEP...
> > >but I believe that if a single MRF150 can give 150 W of RF,
> > 16 of them
> > >should
> > >give much more of that specified 1KW power... isn't correct
> > ?
> >
> >
> > Linearity specifications in commercial systems are often
> > more stringent than in amateur applications, and the spec
> > has to be guaranteed over temperature, time and supply
> > voltage ranges. It is quite normal to run devices at about
> > 50% of their cw rating.
> >
> > Steve
> >
> >
> > --
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> > Problems: owner-amps@contesting.com
> > Search: http://www.contesting.com/km9p/search.htm
> >
>
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