On 3/13/2013 5:19 PM, Mike S wrote:
On 3/13/2013 6:40 PM, [email protected] wrote:
Some of the little magnetic attached antennas on eBay will operate on
3-5V. More problematic is using the older antennas which require 5V
with the newer chips such as the LEA-5,6,7 series which run on 3.3V.
Some distribution amps will all you to inject the voltage you need. I
have an HP 58516A (an inexpensive eBay purchase) which passes the
voltage from port 1 to the antenna. That also powers the amp. So, I
put clean 5 V into port 1, and connect GPS receivers to the other 3.
You can also put a 5-volt GPS on port 1 to match your 5-volt antenna and
GPSs with other voltages, e.g. 3.3 or even 12 volts, on the other
ports. This way, you don't lose the use of one port.
Ed
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