Re: [IRCA] DC Operation of General Coverage Receivers

[Rick Kunath <k9ao@xxxxxxxxxxx>]

Doug Pifer - KE6GMM wrote:
> I was thinking of using a car battery or two- or what ever makes it 
> practical.  

You might want to re-think the choice of a car battery for your 12 V 
power source. Car batteries are not designed for deep-cycle use and in 
as few as 12 full discharge cycles you'll have a shot battery. Grab a 
good deep-cycle battery instead. They are designed for the type of 
charge/discharge cycles you'll be using. Most of them have nice carrying 
handles on them too.

I realize that you aren't going to be pulling a lot of power from the 
battery with just your receiver, loop, and a few accessories, but if you 
have to purchase the battery it might be lots cheaper in the long run to 
get a battery designed for your application. The price differential is 
almost negligible.

> The possible location or any location on the property for that 
> matter, would be accessible to a long extension cord and batter charger- so 
> that wouldn't be an issue.  

You're probably not going to need to charge the battery during use. You 
should have plenty of battery capacity for your listening sessions.

I used a setup similar to the one you're thinking about for years in a 
very remote listening location in Michigan's Upper Peninsula, way way 
off the grid. I charged the battery from the trailer connector charging 
terminal on the pickup truck on my runs into town. I got many days of 
use from a single charge.

Now talk about a low noise floor...

Rick Kunath
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