Frequency – Cobra Electronics 150GTLDX User Manual

Page 10

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13

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Frequency

12 English

Frequency

Frequency

Three controls and one indicator are used together to set and display the radio

frequency on which your mobile radio will receive and transmit signals. In this

connection, it is important to understand the frequency bands built into the unit

and the way they are displayed on the Dual 7 Segment Display.

The 10 meter frequency range is broken down into four bands on your

mobile radio. These are selected using the Band A / B / C / D knob.

Band

Frequency Range — MHz

A

28.000 – 28.495

B

28.500 – 28.995

C

29.000 – 29.495

D

29.500 – 29.700

Within each band, frequencies can be selected in 5 kHz increments, such as 28.005 MHz

in Band A or 29.455 MHz in Band C. These are selected using the Frequency Selector

knob after the band has been chosen.

- -

Dual 7 Segment Frequency Display

Frequencies are displayed on the Dual 7 Segment Frequency Display using a combination

of numerical figures and decimal points. The figures indicate the first two values after the

decimal point in the frequency, such as the 00 in 28.005 MHz. The right hand decimal point

in the display indicates whether the third value after the decimal point in the frequency is

0 or 5 — if the right hand decimal is visible on the display, the third value is 5; if it is not

visible, the third value is 0. The left hand decimal point in the display (between the two

figures) indicates whether the two values before the decimal point in the frequency are

28 or 29 — if the left hand decimal is visible on the display, the first two values are 29;

if it is not visible, the first two values are 28. Refer to the examples in the following table.

Frequency Display

Frequency

0 0

28.000

0 0.

28.005

0.0

29.000

0.0.

29.005

3 5

28.350

4 5.

28.455

2.5

29.250

6.3.

29.635

Frequency

- -

Band A / B / C / D

This control selects the desired frequency band.

- -

Frequency Selector

This detented control is a 360º multi-position switch used to increase or

decrease the operating frequency in 5 or 10 kHz steps within the selected band.

- -

+10 kHz / Off

When this switch is in the off position, the operating frequency is increased or

decreased by 5 kHz with each click of the frequency selector knob. When it is in

the +10 kHz position, faster tuning is available because the operating frequency is

increased or decreased by 10 kHz with each click of the frequency selector knob.

Your Mobile Radio

Your Mobile Radio

Channel Display

88

28/29 MHz

0/5 kHz

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