Let's talk loooong record time -- 10+ hours unattended.
First, the flash card. At a bit rate of 24/48, one hour of stereo recording
fills about 1GB of storage space. So using a 16GB card, 10 hours of
recording will fit OK.
Second, the file size. The R-09HR can be set to start a new file and
keep recording when the file size gets to 1GB. So each file will hold
about an hour of material. Anyone have problems with the rollover
to a new file?
Third, battery run time. Maybe this is the biggest obstacle to running
unattended for 10 hours or longer.
Looking through the posts in this thread, I see that people report
-- 4 to 5 hours of battery life using alkaline AAs,
-- maybe 7 hours using 2700 mAh rechargables, and
-- Lithium AAs might last 9 hours (anyone actually using these?)
That's not enough juice, so an external battery will be necessary.
The AC adapter provided with the R-09HR provides 3V DC to the
recorder. It's not easy finding an external battery that provides only
3V, but here's one option:
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2741Most gear has the hot lead on the center of the power connector,
but Edirol sometimes puts the cold/ground in the center. Can someone
tell me how the R-09HR is wired?
Will the R-09HR work if connected to a power source that provides more
than 3V? A third party external battery that provides 5V DC is easier to
find, and less expensive.
Can you power the R-09HR via the USB port?
Lots of questions about external power. What solutions have you tried?
Thanks!
Flintstone