System Operation; Frequency Plan Overview; Factory-Defined Groups; User-Programable Groups - Telex RadioCom BTR-700 Operating Instructions Manual

Frequency Plan Overview

The BTR/TR-700 has 36 factory defined frequency groups
and 12 user-programmable frequency groups. A Group de-
fines the base station transmit frequency and thus the receive
frequency on all the beltpacks. A Channel defines a base sta-
tion receive frequency and thus a beltpack transmit frequency.
A base station receive channel that does not have a frequency
set for it will have a dash to the right of it on the Group/Chan-
nel select screen. Details on setting frequencies may be found
in the "BTR-700 Menu Structure" and "TR-700 Menu Struc-
ture" instructions in this section.

Factory-Defined Groups

The 36 factory-defined groups were carefully chosen to avoid
certain intermod products and various other possible sources
of interference. The Groups are set and cannot be changed.
There is a limited number of channels which can be chosen
from within these groups.
The first 24 factory-defined groups (01A – 12B) are "pair"
groups that can be used for single (up to 4 beltpacks) and dual
(up to 8 beltpacks) BTR-700 systems. They are arranged 01A,
01B, 02A, 02B...011B, 012A, 012B. A "pair" group, like 1A
and 1B, have different base station transmit frequencies, how-
ever, they both have the same eight base station receive chan-
nels from which to choose. Each channel represents a unique
frequency. For example, one BTR-700 could be set on Group
02A and channels 01, 02, 03 and 04. The other BTR-700
could be set on Group 02B channels 05, 06, 07 and 08. As
long as the channels are different, everything should be fine.
The next 12 groups (13 – 24) are single groups that primarily
are used for single (up to 4 beltpacks) BTR-700 systems. The
number of channels from which to choose from in these
groups will vary from group to group.
User-Programmable Groups
The 12 user-programmable groups are initially empty. The
transmit and receive frequencies are fully editable within these
groups. In fact, factory-defined groups may be copied to
user-programmable groups and then edited if desired. See the
"BTR-700 Menu Structure" and "TR-700 Menu Structure" in-
structions in this section for details on how to copy and edit
frequencies.

System Quick Start

Follow the list below to quickly get a base station and
beltpack(s) operating. When completed the user should have a
base station and 1 to 4 beltpacks up and running with full oper-
ational ability. The base station will be on Group 01A with its
four receivers on channels 01, 02, 03 and 04. Each beltpack will
be on Group 01A with a unique transmit channel number
matching one of the base station receive channels.
1. Plug-in the base station via the supplied power cord and
connect the antennas. The color dots on the base should
match the color rings on the antennas.
2. Base station rear panel switches: Transmit power set to
High and on.
3. Ensure base station rear panel IC switch matches attached
wired intercom system. If used stand alone or connected to
a 4-wire system then IC switch position is Not Applicable.
4. Press [MENU] as powering-up the base station. This will
place it on group 01A and set the receives on channels: 01,
02, 03, and 04.
5. Place the front panel IC "IN" and "OUT" level controls in
the 12:00 o'clock position. Check that front panel IC is in
2-wire for AudioCom (Telex), RTS - TW and ClearCom
wired systems, and 4-wire for RTS Matrix and stand-alone
operation.
6. Place batteries in the beltpacks.
7. Remove the rear switch cover on the beltpacks. Set the
beltpack rear panel slide switch to push-to-talk (PT
TALK).
8. Press [MENU] as powering-up each beltpack. This will
place the beltpack on group 01A with the channel 01
flashing.
9. Use the [UP] and [DOWN] arrow buttons to change the
channel to match a channel on the base station. Then press
[SET]. If leaving on channel, just press [MENU]. Each
beltpack should have a unique channel number.
10. The group/channel on the beltpack should now match the
group and a receive channel on the base station. Nothing
should be flashing on the beltpack screens.
11. Plug headsets into the beltpacks and set the microphone
gain so the BAT/OM LED will flash at the beginning of
most words at normal speech levels.
DONE.
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ection
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System Operation