Thread: Field Day?
View Single Post
  #21   Report Post  
Old June 25th 07, 03:00 AM posted to rec.radio.amateur.moderated
Mike Coslo Mike Coslo is offline
external usenet poster
  
First recorded activity by RadioBanter: Feb 2007
Posts: 168
Default Field Day?
wrote in news:1182718200.618480.68940
@c77g2000hse.googlegroups.com:

I think they are using a laptop, because I don't know any desktops
that run on 12 volts DC (though there are probably some). It sounds to
me like what they did was to use a laptop with a charging cord meant
to go into an auto accessory power socket. That way, the primary power
comes from the 12 volt power system they need for the rig, and the
laptop's internal battery is used for backup in case there is some
sort of power interruption.

FD lasts more than 24 hours, and I don't know any laptops whose
batteries will run that long. Using external power means no
interruptions.

An awful lot of laptops run on 18 Volts DC. My IBM's Dells, snd most
recently, a Toshiba. (actually it is 19 Volts) If you aren't going to run
them off 120 volts and their own power supply, you'll need to run a DC to
DC p.s.

- 73 de Mike KB3EIA -

Reply With QuoteReply With Quote