Icom IC-F27SR User Manual

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OPERATION
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D Transmitting notes
• Transmit inhibit function
The transceiver has several inhibit functions which restrict trans-
missionunderthefollowingconditions:
- The channel is muted.
- The channel is busy.
- A signal with an un-matched CTCSS (or DTCS) tone is re-
ceived.
- The selected channel is a ‘receive only’ channel.
• Time-out timer
The transceiver has a time-out timer function which prevents con-
tinuous, extend transmissions.
After continuously transmitting longer than the preprogrammed
time period, the Time-out timer function activates, and stops further
transmitting.
• Penalty timer
Once the time-out timer function activates, transmitting is further
inhibited for a time period determined by the penalty timer.

Icom IC-F27SR Specifications

General

Frequency Range	136-174 MHz
Channels	16
Power Output	5W
Channel Spacing	12.5/25 kHz
IP Rating	IP54
Mode	FM
Type	Handheld

Summary

Precautions

Critical Safety Alerts

Key safety warnings including DANGER and WARNING statements to prevent severe hazards.

Operational Handling and Care

Guidelines for safe operation, temperature limits, cleaning, and water exposure.

Panel Description

Front, Top, and Side Panels

Programmable Key Functions

Operation

Turning ON the Power

Steps to turn the transceiver on and initial power-up procedures.

Battery Type Selection

Procedure for selecting the correct battery type for the transceiver.

Channel Selection

Methods for selecting the desired operating channel on the transceiver.

Receiving and Transmitting

Instructions on how to receive signals and transmit using the transceiver.

Preprogrammed Frequency and CTCSS Tone List

Transmitting Notes

Setting the Microphone Gain

Instructions on how to adjust the microphone gain for optimal voice input.

Setting the Squelch Level

Guide to adjusting the squelch level to filter out background noise.

Priority A Channel Selection

Auto Scan Function

Battery Charging

Caution (BP-264 Ni-MH Battery)

Safety precautions for using and handling the BP-264 Ni-MH battery pack.

Caution (BP-265 Li-ion Battery)

Safety precautions for using and handling the BP-265 Li-ion battery pack.

Charging Caution

Important warnings and precautions related to charging the battery packs.

Battery Chargers

Using the BC-191 to Rapid Charge BP-264

Using the BC-192 to Regular Charge BP-264

Using the BC-193 to Rapid Charge BP-265

Using the BC-197 to Rapid Charge BP-264 or BP-265

Charger Alignment Note

Options

Chargers

VOX Function

Explains the VOX (voice operated transmission) function for hands-free operation.

Optional Unit Connection

Turning VOX Function ON or OFF

Procedure to enable or disable the VOX function when powering on the transceiver.

Setting the VOX Gain

Specifications

General

Transmitter

Receiver