Re: K2 voltage requirement
Posted by
Phil Kane-2 on
May 12, 2009; 11:56pm
URL: http://elecraft.85.s1.nabble.com/K2-voltage-requirement-tp2870123p2876554.html
On 5/12/2009 9:04 AM, Vic K2VCO wrote:
> When operating a QRP K2 in the field with a battery, how low can
> the battery voltage go before there are problems with signal
> quality?
> Will it work down to 10.5v?
FWIW my experience with a K2/100 operating at 30-40 watts is
that below 11.5V it goes sour.
I had to arm-wrestle Trojan Battery to get ampere-hour
discharge curves down to that level for my 27AGM batteries. The
industry standard for ampere-hour discharge ratings is down to
10.5V. They finally admitted that the discharge capacity down
to 11.5V is about 70% of the 10.5V rating.
One of my professional colleagues is a national expert on
battery supplies for communication sites and he concurs with
that figure for that type of battery.
-- 73 de K2ASP - Phil Kane
Elecraft K2/100 s/n 5402
______________________________________________________________
Elecraft mailing list
Home:
http://mailman.qth.net/mailman/listinfo/elecraftHelp:
http://mailman.qth.net/mmfaq.htmPost: mailto:
[hidden email]
This list hosted by:
http://www.qsl.netPlease help support this email list:
http://www.qsl.net/donate.html