The HP GPS Splitters are amplified (unity gain), AND the documents say
that all of the non-powered (typically all but port 1) ports are
terminated with 200 Ohm resistors to simulate an antenna load (This is
part of DC blocking the ports and/or "tricks" the amp into working when
all ports aren't populated. I'm going to assume that on these active
splitters, no termination is required, just port covers to keep them clean.
______________________
Clay Autery, KY5G
(318) 518-1389
On 05/24/18 07:53, Wes Stewart wrote:
I wouldn't say they were self-terminating, but more that they don't
care. If you have a multi-port passive splitter then I would
terminate unused ports to ensure proper splitting. Maybe your GPS
distribution amp too as it may be an amp driving a passive splitter
inside.
Wes N7WS
On 5/24/2018 1:46 AM, Clay Autery wrote:
Putting in a hardware order...
Question: Is it recommended to put terminators on all/certain unused
ports?
K3s Antenna ports not being used? Any others?
GPS Distibution Amp (HP 58516a/HP58517a Unity Gain Distro Amp) ports
not being used?
Output ports on GPSDO and NTP servers (10MHz and PPS)?
Others?
Or are some/all of them self terminating?
73,
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