Midland GB1 User manual

”User manual

PMR446 TRANSCEIVER |

GB1

GB1 instruction guide | 1

Index

Content of the packaging 3

Coverage/range 3

Warnings 3

Main features 4

Programming software (optional) 4

Description of the controls 5

Display 5

Radio (Front side) 6

Rear side 7

Microphone 7

Functions 8

Turning on/oﬀ 8

Channel selection 8

Transmission and reception 8

‘FLIP’ function 8

Monitor 9

Reset 12

Technical speciﬁcations 13

RTTE 17

2 | GB1 instruction guide

MIDLAND GB1 is an extremely compact PMR446 mobile transceiver desi-

gned for mounting in modern vehicles with limited space. GB1 is free use

in almost all European countries.

GB1 instruction guide | 3

Content of the packaging

• MIDLAND GB1 transceiver

• Mounting bracket

• Antenna with cable

• Microphone

• Microphone holder

• Screws

• Cigarette lighter power cable

Coverage/range

The maximum range depends on terrain condition and is obtained du-

ring use in an open space.

The only limitation to maximum possible range are environmental fac-

tors such as blockage caused by trees, buildings, or other obstructions.

Inside a car or a metallic constructions, the range can be reduced. Nor-

mally the coverage in the city, with buildings or other obstructions is

about 1 or 2 Km. In open space but with obstructions like trees, leaves

or houses the maximum possible range is about 4-6 Km. In open space,

without obstructions and in sight, like for example in mountain, the co-

verage can be more than 12 Km.

Warnings

Do not open the radio for any reason! The radio’s precision mechanics

and electronics require experience and specialized equipment; for the

same reason, the radio should under no circumstances be realigned as

it has already been calibrated for maximum performance. Unauthorized

opening of the transceiver will void the warranty.

4 | GB1 instruction guide

Main features

• Power: 500mW

• Operating temperature: from -20° to +55°C

• Flip function

• 50 CTCSS tones and 104 DCS codes (normal) + 104 DCS codes (inver-

ted) that can be enabled through the optional programming software

• Monitor function

• SCAN function

Programming software (optional)

Thanks to the programming software PRG-GB1, it is possible to increase

the performance of your radio or to reduce its functionality by disabling

some of the default features (CTCSS, TOT...).

For further information, please consult the Programming software ma-

nual.

Any attempt to change frequencies or output power of the radio invali-

dates the approval.

GB1 instruction guide | 5

Description of the controls

Display

A This icon appears when the radio receives a signal or when the

squelch is opened;

BIndicates a CTCSS tone or DCS code activated on the selected

channel;

CIndicates that the selected channel is included in the list of chan-

nels to be scanned (only the ﬁrst 8 channels are enabled by de-

fault). To enable/disable some channels to the scan list, see para-

graph “Scan”.

DKeypad lock; only /buttons are active.

EThese digits show the selected channel;

FThis icon appears when the radio receives a signal or when it’s

transmitting;

GTransmission mode.

1 2 3 4

5678910

11 1213

6 | GB1 instruction guide

Radio (Front side)

1-9 /buttons; to increase / decrease the volume level (from 0 to

15). Press to select the desired audio level.

2-7 Channel ▲/▼:to select the desired channel (from 01 to 99).

3 Menu: push this button to enter the functions Menu (from F1 to

F5) where you can change the radio parameters. Press Menu and

select the desired function with the ▲/▼ buttons. Conﬁrm by

pushing again Menu and select the desired level with Channel ▲

or Channel ▼.

4 On/Oﬀ: press this key to switch on or oﬀ the unit.

5 Monitor: this button suppresses noises on free channels and al-

lows to receive even weak signals.

6 Scan: push this button to start/stop the channel scan. The scan

can be done on the channels enabled to the scan and will stop

when a signal is detected and starts again after 4 seconds if the

signal disappears.

8 LCD display

10 RJ mike connector: connect the microphone or the optional pro-

gramming cable to this jack.

1 2 3 4

5678910

11 1213

GB1 instruction guide | 7

Rear side

11 Power supply connector

12 Antenna cable

13 EXT SPK jack: you can connect an external speaker to this jack

(3.5mm). In this case the internal speaker is automatically excluded.

Microphone

14 PTT: press to transmit

1 2 3 4

5678910

11 12

1 2 3 4

5678910

11 1213

8 | GB1 instruction guide

Functions

Turning on/oﬀ

Press to turn on/oﬀ the unit. When the radio is turned on, you can

press this button to adjust the backlight (6 levels available).

Channel selection

Select the desired channel with the ▲/▼buttons.

If you hold down the ▲/▼buttons for 2 seconds, the channels will scroll

quickly upwards or downwards.

Transmission and reception

Select the desired channel

Press the PTT button on the microphone and speak with a normal tone

of voice to the microphone

To receive, release the PTT.

‘FLIP’ function

Thanks to this function, the unit can be mounted with the speaker facing

up or down; the display can read in either orientation.

To activate this function, keep pressed ▼while turning on the radio: the

LCD display will ﬂip by 180°. Hold down ▲while turning on the radio to

restore to normal position.

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