User's Manual

Table Of Contents

EX7100 Technical Manual - Configuring the Terminal

Changing the Local Transmitter Frequency.

Ensure the Transmitter is set to operate on the required frequency.

Notes:

- This procedure is specific to a local

transmitter. To change the frequency of a

remote transmitter refer to Section 4.3.3.

- The EX7100’s front panel tuning range is limited. If a frequency change of more

than 100kHz

is required, it will be necessary to manually retune some parts of the

RF Section of the radio. Transmitter module re-tuning instructions are detailed in

Sections 7.3.3 (VHF) and 7.4.3 (UHF). Duplexer module re-tuning instructions are

given in Sections 7.9.3 (VHF) and 7.10.3 (UHF).

In addition, it may be necessary to replace the Duplexer module if a large change

in frequency is required. Refer Section 7.9.4 (VHF) and 7.10.5 (UHF).

Reserved Frequencies

- There are a number of internationally agreed frequencies that have been reserved

exclusively for Distress and Safety Communications.

It is therefore necessary to prevent transmission on the reserved frequencies (as

well as the frequencies one channel either side of the reserved frequencies)

Affected VHF frequencies

156.525 MHz (± 5 or 6.25 kHz) & 156.800 MHz (± 5 or 6.25 kHz)

Affected UHF frequency

406.000 MHz (± 5 or 6.25 kHz)

It is not possible to enter the above frequencies during the Tx frequency change

procedure outlined below (note that this only affects the Tx frequency procedure,

the Rx frequency procedure will allow selection of the frequencies but the

corresponding transmitter cannot be set)

1) The local transmitter must not be

transmitting. Setting the terminal to “On-

demand” operating mode will ensure the

transmitter is idle as long as there is no

data traffic.

From idle, press ‘Enter’

Use the arrow keys to enter the First Level

password ‘1111’ and then press ‘Enter’.

2) Use the up and down arrow keys to make

sure the → is next to Controller.

Press ‘Enter’.

Password ∗ ∗ 1 ∗

↑

→Controller

rf parameters