artie  wrote in message   l.com...
 Check out the manufacturer's websites, such as www.duracell.com -- go
 to the professional pages for the data sheets, such as this one:
 http://www.duracell.com/oem/primary/alkaline/mn1300.asp
 That shows an alkaline D cell under a 750mA load lasting almost 12
 hours, with a terminal voltage of just under 1 volt.
 You have to do a LOT of talking at high power to use up that kind of
 power!
 I have a 6-D cell pack I (can) use, but most of the time I stick with
 the AA pack for the radio.  In a pinch, I keep a set of AA Lithium
 cells around -- much longer shelf life, and longer life under high
 drain.
 Spend some time perusing the data sheets; you'll learn a lot.
 73--
Good advice - except I didn't have access to anything which could
download and read a PDF, as I only has my Palm Tungsten W with me to
search, read and post.
I found it interesting that with loads somewhat similar to what I
expect for Field Day, the e2 Titanium batteries had about 20% longer
run tinmes, all other things being equal.