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--- In ham_amplifiers@..., "pentalab" <jim.thomson@>
wrote:

--- In ham_amplifiers@..., 1800 Toll Free
<TollFree1800@> 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