|
Digital Simplex List and
Information |
| The purpose of this list is
NOT to reserve
exclusively these frequencies for DMR or any digital use
but only to provide some common frequencies to more
practically enable use of simplex on the fly anywhere in
the USA as front panel programming is not available and
talk-around (direct on a repeater pair) is unworkable.
See current table for
UHF/VHF. |
| The discussion has
wound down and as of 6-12-2013. The
repeater list
and talkgroup page
have been updated and has the simplex channels listed at
the bottom of the
page. If you have any last minute issues with
the simplex listing, then make it known in the Yahoo
Groups. The simplex listing has been renamed
National Digital Simplex so to include all 12.5Khz (or
narrower) digital modes rather than limiting it to only
DMR. The
rest of this page is legacy and now stale... |
|
| This page is
only a mock-up to aid in the discussion in
support of creating a wide-spread list of DMR Simplex
channels for use in the USA. More work will follow
for VHF and worldwide for DMR and possibly the other
digital modes. This page will change frequently as
the discussion narrows the concerns of the digital
(and analog) community. The main focus currently is for
digital UHF
in the USA. |
| While this list is
primarily developed for DMR simplex, all digital modes
using 12.5 Khz wide channels or less, are welcome to
use the frequencies as well as participate in our
discussion to develope this list of frequencies.
Anyone is welcome to submit any area
exceptions that they would rather us not use. This
is a community effort that is striving to garner the
best use of limited channel space in the 440-450 band. |
| Latest
information in our discussion: read the posts in both
MototrboUSA
and
Mototrbo Yahoo groups. |
| Temporary annotations are right
margin in turquoise. |
|
USA VHF
Digital Simplex (discussion ongoing) |
| ## |
Mode
Label (15
digits) |
Notes,
Exceptions |
| 01 |
145.6700 |
National
Digital Simplex Calling channel? |
| 02 |
145.6500 |
? |
| 03 |
145.6300 |
? |
| |
145.6100 |
? |
| |
| |
144.3100 |
possibles |
| |
144.3700 |
possibles |
Defaults: Talkgroup ID 1, Color
Code 1, Timeslot 1
Alternates: Talkgroup 2 on Timeslot 2 for Gen 2 capable
radios |
|
More
work needed below, more a placeholder for discussion
after USA UHF and VHF discussions |
|
Worldwide
VHF and UHF Digital Simplex |
| ## |
Frequency |
Notes,
Exceptions |
| 01 |
433.4500 |
Friedrichshaf Germany |
| 02 |
|
|
| 03 |
|
|
| 04 |
|
|
| 05 |
|
|
| 06 |
|
|
| |
Defaults: Talkgroup ID 1, Color
Code 1, Timeslot 1
Alternates: Talkgroup 2 on Timeslot 2 for Gen 2 capable
radios |
Discussion on this table is now ended
as of 6-12-2013
|
USA UHF
Digital Simplex (Rev 3; 6-8-13) |
| ## |
Mode Label |
Notes,
Exceptions |
| 01 |
01 441.0000 |
National Digital
Simplex
[appears to be the best freq yet for simplex] |
| 02 |
03 446.5000 |
National Digital
Simplex, Secondary
[appears next best freq yet for simplex] |
| 03 |
03 441.0125 |
[Suggestion to
move farther away than a splinter]
[1st splinter above 441] |
| 04 |
04 440.9875 |
[Suggestion to
find something in 430-440]
[1st splinter below 441] |
| 05 |
05 446.5125 |
[1st
splinter above 446.5] |
| 06 |
06 445.9875 |
[1st splinter
below 446.5] |
| 07 |
07 446.000
ANA |
National UHF
Simplex (Analog) |
| 08 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 09 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 10 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 11 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 12 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 13 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 14 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 15 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 16 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
|
[Other
TG's being considered: "All Call" or MARC's USA #300] |
Defaults: Talkgroup ID 99, Color Code 1, Timeslot 1,
[Color Code Free & Always on TX]
Alternates: Talkgroup 2 on Timeslot 2 for Gen 2 capable
radios |
| It is recommended that you
contact the local area coordinating counsels when using
our recommended simplex frequencies to insure an
interference free session.
If you wish to comment, correct or provide an exception
for use in your area, please send them to
dci@trbo.org Provide sufficient data so that
we can correct or add the except for your area. |
|
USA UHF
Digital Simplex (Rev 2; 6-6-13) |
| ## |
Mode Label |
Notes,
Exceptions |
| 01 |
01 445.0125 |
National Digital
Simplex, (Chicago Repeater Links) |
| 02 |
03 440.0125 |
National Digital
Simplex, Secondary
[Complement of channel 1] |
| 03 |
03 445.0375 |
|
| 04 |
04 440.0375 |
|
| 05 |
05 445.0625 |
|
| 06 |
06 440.0625 |
[Even/odd
channels complement input/output] |
| 07 |
07 445.0875 |
|
| 08 |
08 440.0875 |
|
| 09 |
09 445.1125 |
|
| 10 |
10 440.1125 |
|
| 11 |
11 445.1375 |
|
| 12 |
12 440.1375 |
|
| 13 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 14 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 15 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
| 16 |
Custom Ch |
[Your local
simplex or custom channel in zone if desired] |
|
[Other
TG's being considered: "All Call" or MARC's USA #300] |
Defaults: Talkgroup ID 99, Color Code 1, Timeslot 1
Alternates: Talkgroup 2 on Timeslot 2 for Gen 2 capable
radios |
|
Other frequencies under discussion
and consideration |
| 446.0750 |
Current Primary Digital Simplex,
standard 25 Khz channel spacing and repeater pair |
| 441.000 |
|
| 441.500 |
|
| 446.500 |
|
|
USA UHF
Digital Simplex Rev 1 (to be deleted) |
| ## |
Mode
Label (15
digits) |
Notes,
Exceptions |
| 01 |
DMR
445.8100 |
[simpler label as
suggested by Jerry] |
| 02 |
U02 445.8125 DM |
[orig label so you
don't have to look at your selector] |
| 03 |
445.8375 |
[simpler label yet;
we know it's a TRBO radio] |
| 04 |
04 445.8875 |
[possibly the best
label yet; channel # is included so you don't need to
look at the selector when selecting a mode] |
| 05 |
U05 445.9125 DM |
|
| 06 |
U06 445.9375 DM |
|
| 07 |
U07 445.9625 DM |
|
| 08 |
U08 445.9875 DM |
Detroit APRS
on 445.9250 |
|
[446.000 USA National UHF Simplex] |
| 09 |
U09 446.0125 DM |
Chicago
Repeater Links |
| 10 |
U10 446.0375 DM |
|
| 11 |
U11 446.0625 DM |
|
| 12 |
U12 446.0875 DM |
|
| 13 |
U13 446.1125 DM |
|
| 14 |
U14 446.1375 DM |
|
| 15 |
U15 446.1625 DM |
|
| 16 |
U16 446.1875 DM |
Other TG's being considered: "All Call" |
| |
Defaults: Talkgroup ID 99, Color
Code 1, Timeslot 1
Alternates: Talkgroup 2 on Timeslot 2 for Gen 2 capable
radios |
| It is recommended that you
contact the local area coordinating counsels when using
our recommended simplex frequencies to insure an
interference free session.
If you wish to comment, correct or provide an exception
for use in your area, please send them to
dci@trbo.org Provide sufficient data so that
we can correct or add the except for your area. |
Generation 1 Legacy
List (to be deleted)
|
National TRBO
Simplex Frequencies |
| UHF: |
1) 446.075
2) 445.925 3) 433.000 4) 434.000
5) 435.000 |
| VHF: |
1) 145.790
2) 145.510 3) 146.510 |
| Color Code 1
and Talkgroup 99 (Timeslot 1 if your radio
is capable of "2 slot simplex") |
| On-going discussion and fine-tuning on the
MTUSA and/or
MotoTRBO Yahoo Groups; comments welcome |
|
