[Lowfer] HIFER POWER?

[Dale Rice]

Ed,
I have no experience yet with NEC etc.
My general feeling is that one should go for as isotropic a situation as
possible as high in the air as possible. I would stay away from any
traditional antenna gain schemes on this band as any type of gain will cause
you to have to cut power accordingly.
Of course keeping things simple and using what you already have makes sense
when getting started.
Your crystals were sent off Thursday and I included a sample of some solder
I got too much of as a sample, there is no connection between it and the
crystals so don't try to find one. I am just looking for comments.

Dale R


> Dale Rice wrote:
> >
> > Ed,
> > You are in the ballpark. A lot of folks are talking about 4.5 or 4.52 mw
> > into a dipole. Depending on how you figure line losses etc., you could
be
> > right on. I haven't bothered to figure it out myself.
> > A half watt into a rubber ducky could also be about right, or a Kw into
a
> > pin head.
> > Seriously tho, I have been planning a HiFER hand-held for use around
here
> > using whatever power it takes to give me the right field strength.
> > You can use your 50 foot vertical just fine.
> >
> > Dale R
> >
> > > I have just looked at part 15.225 and find a field strength limit,
with
> > > no mention of antenna configuration.  If my calculations are correct
the
> > > power limit would be about 7.4 mW into a short vertical over ground.
> > > Approximately right?
> > >
> > > Big question is about the antenna.  If I can use my present 50 foot
> > > vertical it will be very simple for me to get a HIFER beacon on the
> > > air.  Am I overlooking something important?  [I realize that this
> > > antenna may have a bit of gain, but can adjust the power for that.)
> > >
> > > Ed
>
> Dale:
>
> Thanks for the interpretation and plans will proceed at the usually
> slow pace.  I wonder if you or anyone else in this group is a whiz at
> NEC?  I've been running some MININEC simulations which, if I've done
> them right, indicate that feeding the base of the tower I'll be putting
> most of the energy up in the air at about 45�, but if I put a whip a bit
> over a quarter-wave long down at the base and tilt it away a few degrees
> I can get some energy out toward the general elevation of the horizon.
> Any comments on this?
>
> Ed