Will,
?
Thanks for the input.
After reading all the post on this subject I will
finish the power supply as follows:
?
8 x 2 volt 230 Ah cells feeding the amplifier
stack
?
16 volt 3 stage charger, input voltage 230 V
AC
?
12 VDC => 230 VAC sine wave inverter to supply a
limited 230 AC?for the charger ?while driving
?
an external 230 VAC connector on my trailer hitch
so I can charge the batteries when the car is on the driveway
?
A better alternative would be to install a second
16 volt DC alternator, but there is simply no space for a second
alternator.
?
?
Cheers, Dick
PA3DUV
??
?
?
?
?
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----- Original Message -----
Sent: Wednesday, January 10, 2007 2:00
AM
Subject: [ham_amplifiers] Re:hi power
mobile
--- In ham_amplifiers@yahoogroups.com,
"pentalab" ...>
wrote:
>
> --- In ham_amplifiers@yahoogroups.com,
1800 Toll Free
> > wrote:
> >
>
> It's kind of funny watching the thread about the mobile
amplifiers
> and
> > voltage requirements.
>
> ##### I have
zero experience with it. I was just waiting for
you
> to come out
of the wood work.... since I knew you guys had this
down
> pat...
and was all old news. The deep cycle communications
> batteries work
pretty good.
Right now, they're running those yellow top batteries with
the spiral
cells. They claim these to be the best. Also, there's really no
limit
to the batteries that you parallel together to get the power
required
you need. The more batteries, the longer you can run. I've seen
the
big 24V batteries used in diesel rigs too ran in these set ups. The
ones you want have the largest amp-hour ratings.
>
> ###
I also read in an old QST... where they would use 2 x
> batteries in
series.... like those used in golf carts..... but one
> was 6 V... and
the other was 8 V. [didn't even know u could get
> deep cycle
batteries... big ones... in 6 + 8 V ] Then ur car
> regulator would
charge em to 14 .3 V..... then with engine OFF....
> ur small
706-mk-2-G would last way longer. That setup was also
> used in some
Field day event's.
>
>
>
>
> > They use
a charging system consisting of a 24 volt alternator,
and
> run
> > parallel / series combos of standard car batteries (or standard
> and deep
> > cycle, if they are smart) to have a 24 volt
electric system.
One
> > alternator, and a pair of batteries
will power quite a large
> system, as
>
> ### Don't some
of em use train alternator's ??? Think they
> were split stator, dual
rotor.... or split rotor, dual stator...
> made by Neville Leece.... at
1000 A per stator ?? Or was this
> for the tube setups ??
They'll use like 6 of the Leece Neville alternators under the hood to
power the big solid state amps. Some have used generators that can
provide 115/230 Vac too ran off the belt.
>
> ### I still
haven't seen any detailed website on this hi power
> mobile stuff.
Trying to generate the power is a huge project in
> itself. RFI, etc...
Rf decks... is another issue. You are
> right... hams are just trying
to reinvent the wheel.
Right, not a lot has been published on this as
it was all done sort
of under the table away from the FCC.
>
> Later... Jim VE7RF
>
>
> > --Toll_Free
>
>
>
Best,
Will
