Hi Thomas,
In my dim and distant past I made a heating system for a brand of dry suits=
, the material was woven fabric that heated when electricity was applied, n=
ot quite the same as car seat heaters but the idea is the main thing, perha=
ps a similar fabric or peltier heater/cooler device providing your battery =
can also supply some current to the heater element? it may work. Also insul=
ation via depron (better than styrofoam) or fiberglass / box inside a box w=
ill help thermal losses. - A hand warmer or candle may be too hot, depends =
on how fast your box is loosing heat, Ill leave the physicists to calculate=
that one=85
Greetings from a chilly -25C / -13F
My Hydrophones turn into ice lollies / popsicles rather fast in such tempe=
ratures :)
BR
Mike.
--- In Thomas Ashcraft <> wro=
te:
>
> Seeking advice:
>
> I am recording dusk to dawn in unattended twelve hour long nightly
> sessions, outdoors in a battery operated situation with temperatures
> down to 10 degrees F. I keep my Edirol R-09HR recorder and Tekkeon
> external battery pack in a tupperware box. I would like to have
> something to keep my box and equipment temperatures warmer.
>
> Can anyone recommend a method or product? ( Also, my recording site is
> not near an electric line or outlet.)
>
> Thanks in advance for your reply.
>
> Thomas Ashcraft
> New Mexico
>
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