Thread
:
Human-powered portable power generation
View Single Post
#
2
February 26th 07, 01:44 PM posted to rec.radio.amateur.moderated
Jon Kåre Hellan
external usenet poster
First recorded activity by RadioBanter: Mar 2007
Posts: 38
Human-powered portable power generation
writes:
Couple of ideas:
1) If you use batteries, the recharger doesn't have to
supply enough power to operate the rig at maximum
demand - only average demand. If a rig draws 4 W on
receive and 20 W on transmit, and you transmit 10% of
the time, a 6-7 watt source should be more than enough.
2) A small solar panel can provide a trickle charge for
NiMH/nicad batteries. Of course it doesn't work at night.
3) Costco and others sell a small crankpowered LED flashlight. No
springs - winding the crank charges the batteries.
4) Or you could follow G5BD's example:
http://jacksonharbor.home.att.net/g5bd.jpg
73 de Jim, N2EY
The guys on the Kon-Tiki raft expedition in 1947 used a hand cranked
generator. I guess hearing Thor Heyerdahl read the Kon-Tiki book aloud
on the radio when I was 9 was one of the things which pushed me in the
direction of ham radio. The radio operators on Kon-Tiki had been
making clandestine transmissions out of occupied Norway a few years
earlier.
Some months ago a portable, steam powered WWII agents' generator was
on ebay.
73 de LA4RT Jon, Trondheim, Norway
Reply With Quote
Jon Kåre Hellan
View Public Profile
Find all posts by Jon Kåre Hellan