Motorola MICOM-2TS Spécifications télécharger pdf (Page 26)

Introduction

Receiver Features

The radio utilizes Digital Signal Processing for implementing most of the

reception functions like demodulations, narrow filtering, automatic gain

control, noise blanking, and squelch.

The automatic digital noise blanker is activated whenever repetitive

noise (e.g. ignition spikes) is encountered in the received signal. The

digital syllabic (speech identifier) squelch is activated whenever speech

is identified, thus opening the audio path. However, if speech is not

received, the audio path is muted, thus preventing background noise

from disturbing the operator.

Frequency Sources

Two types of frequency sources are available for the MICOM-2E radio.

The standard 0.6 PPM DTCXO frequency source which assures a

frequency stability of better than ±18 Hz. For frequencies lower than

10 MHz, it assures a frequency stability of better than ±6 Hz.

When higher frequency stability is required, the G478 0.1 PPM OCXO

frequency source can be ordered. It will assure a frequency stability of

better than ±3 Hz at 30 MHz.

Power Source

The radio is designed for 13.8 V ± 20% negative-ground operation and

may be connected to a standard 12 V battery.

CW Keying Operation

When the CW key is pressed, the radio transmits a continuous wave (at

the full programmed power) and stops transmission when the key is

released.

CW keying operation is enabled by connecting the Morse key, between

CW (pin #10) and ground (pin #18) at the accessory connector. If you

wish to operate CW keying with external headphones, the S809

Interface can be used, thus enabling a standard PL55 headphone and

standard PL99 Morse key to be connected to the accessories

connector.

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Motorola MICOM-2TS Spécifications Page 26