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[TenTec] Hercules II Power Source

To: <tentec@contesting.com>
Subject: [TenTec] Hercules II Power Source
From: kh7m@hsa-kauai.net (Jim Reid)
Date: Sat, 25 Dec 1999 17:14:37 -1000
Aloha Jerry,  you wrote,  in part:
 
> I think you want to run the charger while operating the linear to keep
> the battery up to peak voltage for more RF output and least cycling of
> the battery.

Then I take this to mean that I should also run the
Astron supply in parallel with the battery.  It will be
supplying a potential of 13+ volts,  while the battery
will supply the needed current when the Astron
poops out?

The difference in input power to the amp is 1380
watts in with a good Ten Tec,  expensive PS,  but
as low as 1200 watts in with only the battery at 
low charge.  So the output P will be down,  but
will anyone notice?

> 
> Some batteries will leak acid despite all precautions and that acid will
> eat carpets, wood floors, and concrete floors. All batteries create some
> hydrogen and oxygen when fully charged, also when loaded heavily. This
> gas mix is the perfect proportion for the best bang, and it tends to be
> wet with a bit of sulfuric acid so eats walls and such. 

My battery will be outdoors;  outside the window and out,
maybe 3 feet from the house.  Temp outside has never gone
below 56 deg. F here in the 8 years we have been on 
Kauai,  nor never warmer than  86F,  nice.  

All in all,  sounds as if I do not want a marine battery,
but a regular auto,  wet or floated cell battery.  And not,
by definition,  a deep cycle battery,  whatever that is
supposed to connote.

Interesting discussion on a Christmas evening.  It is now
only 5 PM here on Kauai;  the turkey is in the oven,
and my wife advises it will be ready at 6.  She,  my son,
mother,  and my wife's sister are all playing pinochle,
while I play radio.  No interesting DX on the  bands just
now,  at least that I can find out here in the DX hole
of the Pacific (we  are way out of sync with the mainland
DX openings),  so I am playing power supplies/batteries,  hi.

Mike,  N4NT, had suggested that one reason for the lousy
audio reports could be RF into an ungrounded Astron supply.
So,  I took an ohm meter in:  found both + and - terminals
read 0 ohms to the chassis when the PS is "off".  So,  do not
know if a ground from the neg.  terminal of the Astron to
gnd.  would help yet.  Will try later.   Dog needs to go
for a walk now,  as the pinochle game continues.

73,  Jim,  KH7M



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