Hi,

For a long time I was highly recommending a 12V to 5 V power converter when
powering iPAQs with the GPS-NAV. But I've heard from a few customers that
say they have had success without the power converter. Cambridge told me
the current output data on the GPS-NAV and 302 and I created a note on my
Goddard page for GPS-NAV users. I would love to sell a Goddard PS-5a to
every customer, but they may or may not need one. If they keep their iPAQ
charged every night, they might be OK without the power converter. The note
I'm referring to is near the top of the page below.
http://www.cumulus-soaring.com/goddard.htm

However, I should mention that I have one customer that was powering his
iPAQ with his GPS-NAV and he told me that Cambridge said the GPS-NAV was
damaged and needed repair.

I recommend using the power converter to avoid damage to the GPS-NAV, and to
make sure you don't have an incomplete flight log due to the iPAQ pulling
the GPS-NAV down.

Good Soaring,

Paul Remde
Cumulus Soaring, Inc.

"Marc Ramsey" wrote in message
...
"Rich Chesser" wrote...
I have a gps nav. I have a serial sync cable for my Ipaq 3630. I have
made a connector cable for the gps-nav to the sync cable. I am getting
data transfer.

Power is through the 8 pin on the db9 on the gpsnav. Can anyone
confirm the pin to receive 5 volt power on the db9 sync cable? Also if
5 volts is supplied through the serial cable will the yellow light
blink?

The voltage regulator in the GPS-NAV supplies adequate current for older
PDAs, such as the Compaq Aero 1500. It does not provide enough current
for
an iPAQ, particularly if the battery needs charging. You'll probably end
up
with a discharged iPAQ and/or a fried GPS-NAV. I'd suggest buying a
separate 5V power supply.

Marc