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PNWDigital.Net is
working toward adding DMR simplex to
our community codeplug that will
support the new WWARA sanctioned
digital simplex frequencies and
pairs. As part of that
project, we have roughed out the DMR
simplex plan which incorporates the
long standing 6 national and
international DMR simplex
frequencies in 2 meters and 70 cm as
well as the
WWARA's recent adoption of
non-protected low power digital
simplex frequencies and duplex
pairs. IACC is expected to adopt the
WWARA plan so this would be the same
across the state.
The table below
contains the the recommended
defaults for the 8 simplex
frequencies and 4 duplex pairs.
|
Ch
Label |
Simplex |
Duplex +9 |
Notes |
|
Sim
V1 |
145.7900 |
|
Simplex Defaults are: TG
ID #99, Timeslot 1 and
Color Code 1, talk
permit Always
If
you create your own
non-defaults, please add
them to your zone so
that the defaults are
available
Original Simplex
frequencies implemented
in 2014 by worldwide
consensus |
|
Sim
V2 |
145.5100 |
|
|
Sim
U1 |
441.0000 |
|
|
Sim
U2 |
446.5000 |
|
|
Sim
U3 |
446.0750 |
|
|
Sim
U4 |
433.4500 |
|
|
Sim
U5 WA |
430.4125 |
|
WWARA
recommended low power
(non-protected)
5
watts is the recommended
maximum power |
|
Sim
U6 WA |
439.4125 |
|
|
Sim
U7 WA |
430.4250 |
|
|
Sim
U8 WA |
439.4250 |
|
|
Rpt
U9R WA |
|
430.4375 +9 |
Repeater default
talkgroup: Local 1, TGID
# 3181
Repeater input is 9 Mhz
above the output.
Set talk permit to
follow color code (MotoTRBO
use: TXI)
5 watts is the
recommended maximum
power
Inputs and outputs may
be reversed, suggest
that for dedicated
repeaters, that
different color code be
used to minimize
interference generally
as well as at events
specifically. |
|
Rpt
U10R WA |
|
430.4500 +9 |
|
Rpt
U11R WA |
|
430.4625 +9 |
|
Rpt
U12R WA |
|
430.4750 +9 |
We
suggest that if you make changes,
that you add your changes to a
simplex zone rather than modify
these defaults. This will
ensure that everyone has a
standardized set of simplex for
traveling or when at events such as
the Valley Camp, Mic and Key, etc.
Additional thoughts or concerns that
may merit further discussion:
As you can see, there are 10 simplex
freqs, 4 duplex pairs, 2 bands, 1
timeslot and 1 talkgroup. We suggest
that we try to develop a plan that
be acceptable for use in our region
that expands from this basic list
with the effort which allows
simultaneous use of multiple
frequencies and then break it down
for use by single-slot, talkgroup
ID's. We think that Color Code
defaults should be #1, the
standard. This could be the
beginning point of the discussion.
We should likely factor in for
higher level portable operation,
with or without Internet
connectivity for use of cross-slot
simplex, 1 and/or 2 slot hotspots as
well as cross mode or band operation
as one might find in a typical
Go-Box for hilltops.
Just some other baseline thoughts
for this discussion:
-
UHF or VHF
propagation considerations
-
Why use Color
Code 1 and not use others
-
What TG's
would be best; Simplex 99, TAC's,
Statewides or new discrete
simplex only
-
Timeslot
considerations, simplex may be
single slot or dual slot, many
radios don't support all the
options
-
Frequencies;
determining them; splinters,
single or dual slot (6.25 or
12.5)
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