Kantronics KPC–3 Plus User Manual page 100

The purpose of the UIGATE (which is in multi-port devices only) is to prevent heavy
high speed UI frame activity from congesting (―flooding‖) the low speed (port 1)
frequency.
Each of these commands is documented in the ―Command Reference‖.
Note: Digipeater priority for call signs is as follows: UIDIGI, UIFLOOD, UITRACE,
MYCALL, MYNODE, MYALIAS (e.g. if you assign the same call sign to UIDIGI and
MYALIAS, a to-be-digipeated frame with that call sign will be digipeated according to
the rules that apply to UIDIGI).
Using "UI" Digipeat Commands: UIDIGI, UIFLOOD, and UITRACE
The following are actual monitored outputs of a lab system consisting of one position
reporting station and three digipeaters, where each digi is configured using the UIDIGI,
UIFLOOD, or UITRACE command and where UIDWAIT is set ON. We set UIDWAIT
ON to force the system to digipeat all or most of the UI frames without collision. In all
examples, the reporting station, WØXI, is used to launch a UI packet with the path set
by the UNPROTO command.
With UIDWAIT OFF, several digipeaters would transmit at the same time, resulting in
corrupted packets. In actual on-the-air use, a system of digipeaters may work well with
UIDWAIT OFF, depending upon their mix of location and transmitter power.
In actual use, GPS (or APRS) reporting stations would set their path with the LTP
Configuring Three Digis Using the UIDIGI Command
Here, three digis, with MYCALLs of A, B, and C, are configured with aliases of RELAY,
WIDE, and TRACE (using UIDIGI); and UIDWAIT is set ON. For example station A's
UIDIGI aliases are set as follows:
cmd: UIDIGI ON RELAY, WIDE, TRACE
The reporting station path is then set to GPS via RELAY, WIDE, TRACE, and a UI
packet is launched.
Any one of the stations monitoring will then display the resulting action as follows:
cmd: WØXI>GPS,RELAY,WIDE,TRACE: <UI>:5
WØXI>GPS,B*,WIDE,TRACE: <UI>:5
WØXI>GPS,A*,WIDE,TRACE: <UI>:5
WØXI>GPS,B,A*,TRACE: <UI>:5
WØXI>GPS,A,B*,TRACE: <UI>:5
WØXI>GPS,C*,WIDE,TRACE: <UI>:5
WØXI>GPS,B,C*,TRACE: <UI>:5
WØXI>GPS,A,C*,TRACE: <UI>:5
WØXI>GPS,B,A,C*: <UI>:5
WØXI>GPS,A,B,C*: <UI>:5
WØXI>GPS,C,A*,TRACE: <UI>:5
WØXI>GPS,B,C,A*: <UI>:5
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