On 10/7/2012 9:36 PM, Charles Harpole wrote:
Could a motorcycle electrical system have enuf power to run such an
amp?
Probably not except for short transmissions.
Even if so, would you want that much RF on an antenna mounted on
your bike?
Not me, I have an implanted defibrillator.
What is the RF power output of the in car radios of police and EMS ?
I don't k now about today's, but I had a number of mobile units that ran
up to about 140 watts. I think they were set for around 90 to 100 in
actual use.
What about the output on the rubber duckie on top of the hand mic,
clipped to the officer's epaulettes?
IF and I emphasize the "if" there really is a problem they are likely
running very close to where the RF has maximum effect and that is likely
not a good place for the antenna.
OTOH many of us have hundreds of hours total using the HTs with the
antenna right next to our heads.
73
Roger (K8RI)
Charles Harpole k4vud@hotmail.com
> Date: Sun, 7 Oct 2012 20:21:31 -0400
> From: k8ri@rogerhalstead.com
> To: amps@contesting.com
> Subject: Re: [Amps] 300 W single band mobile amp needed
>
> On 10/7/2012 11:24 AM, rick darwicki wrote:
> > I have a friend that runs a motorcycle mobile on 20 Meters at about
100 watts. He is looking for a schematic/info/link
> for a simple no tune amp of about 300W that would just cover the SSB
> section of 20. Any help?
>
> It takes almost as many components for a solid state, single band ham
> amp as it does for the all band amp and to make it narrow band would
> take at least some of those components. Looking for compact size and
> inexpensive is different, but...
>
> The basic amp is the same layout and it requires the same protective
> circuitry and the same cooling area as an all band amp. The only real
> addition would be the filtering for one band instead of all bands and
> you'd still need it to keep the harmonics off 10 meters.
>
> Now that much power would also likely put the user into an area of RF
> intensity higher than allowed by the FCC which "probably" would not be a
> health problem but it's still more RF than allowed.
>
>
> 73
>
> Roger (K8RI)
>
>
>
> >
> > Thanks
> >
> >
> > Rick, N6PE
> > ================================== Talk is cheap... except when
Congress does it.
> >
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> >
>
>
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