Icom ID-52 Repeater Experiments

Introduction

FM Repeaters - An Introduction

Repeater Book App

Repeater Book App

Local Repeaters

Repeater Book - Specific station

ICOM ID-52D Add Repeater - Instructions

• ICOM ID-52D Add Repeater
• Get into VFO Mode
• Use the top knob to change the freqency.
• To alternate between higher and lower frequencies click the VFO button
• Click on the Menu button
• Select Set using the middle button
• Select DUO/TONE
• Select Repeater Tone
• Use knob to change tone (e.g. 91.5)
• Then select TSQL Freq
• Click on VFO button to escape from Menu

• Click on QUICK button
• Select DUP - Duplex
• Select DUP-
• Select TONE

Add to Memory

• Hold down MR key
• Select WRITE To NEW CH new channel
• Find blank channel
• Push middle button
• Click YES to write to new channel.

Edit name of Memory Channel

• Change to Channel mode (Memory Mode) by clicking on MR button
• Find Memory
• Hold down MR to Edit
• Select Edit with the middle button
• Click QUICK button
• Select NAME
• Enter characters for name
• Press QUICK to exit
• Select <<Write>> to save changes.

Set Squelsh

• Push down SQL button.
• Adjust using Top knob

Escape from Menu

• Press VFO button.

Power setting

• Click on LO button (right indicator button)
• Adjust power level from Low to High.

Repeaters around Melbourne

VK3RHF - Melbourne North West, Mt Macedon

• Receive frequency 438.875
• Transmit frequency 431.875
• 70cm
• FM
• Offset frequency -7.0 MHz
• Repeater tone 88.5 Hz
• 53.3 km North West
• First contact 19 Oct 2023
• Tested - OK

VK3 RSE - Melbourne East, Glen Waverley

• Receive frequency 439.9000
• Offset frequency -5.0 MHz
• FM Carrier
• 26.1 South east
• Tested - OK

VK3 RCC - Melbourne, CBD East

• Receive frequency 438.025
• Offset frequency -5.0 MHz
• Repeater tone FM 91.5 Hz
• 16.7 km South West

VK3 RAJ - Ferntree Gully, Upwey

• 439.7500
• -5 MHz
• FM 91.5 Hz
• 34.5 km South East

VK3 RML - Ferntree Gully, Ferny Creek

• 146.7000 MHz
• -0.6 MHz
• FM 91.5 Hz
• 33.7 km South East

VK3 RMS - Sassafras, Olinda

• 438.2250 MHz
• -5.0 MHz
• FM 91.5 Hz
• 34.1 km South East

VK3 RMC - Dandenong Sth, Narre Warren

• 439.875 MHz
• -5.0 MHz
• FM 91.5 Hz
• 43.8 km South East

VK3 REC - Sassafras, Olinda

• 147.1750 MHz
• +0.6 MHz
• FM 91.5 Hz
• 34.2 km South East

VK3 RHF - Melbourne East, Olinda

• 438.750 MHz
• -5.0 MHz
• FM 88.5 Hz
• 34.2 km South East

VK3 RSP - Rosebud, Arthur's Seat

• 146.675 MHz
• -0.6 MHz
• FM 88.5 Hz
• 75.7 km South

VK3 RSU - Melbourne, Police Academy Site

• 438.100 MHZ
• -7.0 MHz
• FM 91.5 Hz
• 26.2 km South East

VK3 RMN - Kinglake Central, Kinglake

• 146.850 MHz
• -0.6 MHz
• FM 91.5 Hz
• 29.7 km North East

VK3 RPU - Rosebud, Arthur's Seat

• 439.850 MHz
• -5.0 MHz
• FM 91.5 Hz
• 75.9 km South

VK3 RMU - Healsville, Mt St Leonard

• 147.375 MHz
• +0.6 MHz
• FM 91.5 Hz
• 43.8 km East

VK3 RSB - Healsville, Mt St Leonard Tower

• 439.550 MHz
• -5.0 MHz
• FM 91.5 Hz
• 43.8 km East

VK3 RGL - Geelong North, Mt Anakie

• 147.000 MHz
• -0.6 MHz
• FM 91.5 Hz
• 72.3 km West

VK3 RMM - Mount Macedon, Mt Macedon

• 147.250 MHz
• +0.6 MHz
• FM 91.5 Hz
• 52.9 km North West

VK3 RBO - Bendigo, White Hills

• 438.025 MHz
• -5.0 Hz
• FM Carrier
• 124 km North West

Eltham, Kangaroo Ground

• VK3RMH
• 70cm
• 438.32500 Rx
• 433.32500 Tx
• -5.0 MHz
• FM
• 91.5 Hz

Melbourne, CBD East

• VK3RCC
• 438.02500
• -5.0 MHz
• FM
• 91.5 Hz

2 Metre Band - Simplex Mode

• 146.50 - National Voice Calling Frequency
• 146.425 - 146.600 - FM Simplex (25 kHz channels)
• 146.55 - one example of an FM Simplex frequency

Terminology

Half-Duplex

The term "half-duplex" refers to a communication mode or method in which data transmission can occur in both directions but not simultaneously. In a half-duplex communication system, devices or parties can transmit data, but only one at a time. While one device is transmitting, the other device(s) must listen and wait for their turn to send data. This is in contrast to full-duplex communication, where data can be transmitted simultaneously in both directions.

A common example of a half-duplex communication system is a walkie-talkie or a two-way radio. When one person is talking into the walkie-talkie, the other person must wait until the first person finishes speaking before responding. They cannot talk at the same time because the communication is half-duplex.

Half-duplex communication has its advantages in situations where only one device can transmit at a time, reducing the chances of data collisions and simplifying communication protocols. However, it can also result in increased latency and reduced overall data transfer rates compared to full-duplex communication, where devices can transmit and receive data simultaneously.

Co-linear

The term "co-linear" refers to objects or elements that are arranged in a straight line. In the context of antennas, "co-linear" typically refers to multiple radiating elements or conductors aligned in a straight line, usually along a common axis. These elements are designed to work together to achieve a specific antenna configuration or radiation pattern.

Co-linear antennas are popular in applications where multiple radiating elements are used in parallel to enhance performance, gain, or radiation characteristics. For example, in a co-linear dual-band antenna, two radiating elements are aligned in a straight line to support two different frequency bands, effectively extending the antenna's capabilities.

The "co-" prefix in "co-linear" signifies the idea of "together" or "in conjunction," indicating that the elements are aligned and work in harmony to achieve a common purpose. This term is widely used in the field of antenna design and telecommunications to describe antennas with multiple elements aligned along a common axis.

Co-Linear Dual Band Antenna

A co-linear dual-band antenna is a type of antenna designed to operate on two different frequency bands simultaneously. It is particularly common in applications like amateur radio, two-way radios, and wireless communication systems where the ability to transmit and receive signals on multiple frequency bands is essential. This type of antenna has multiple radiating elements, typically two, aligned in a straight line. Here are some key characteristics and features of a co-linear dual-band antenna:

• Dual-Band Operation: Co-linear dual-band antennas are specifically designed for dual-band radios, which commonly operate in the VHF (Very High Frequency) and UHF (Ultra High Frequency) bands. These antennas can transmit and receive signals on both bands.

• Radiating Elements: They consist of two vertical radiating elements that are typically arranged in a collinear configuration. These elements are usually half-wavelength dipoles for each frequency band.

• Phasing Section: Between the two radiating elements, there is a phasing section that ensures that the signals are properly in phase for optimal radiation patterns and gain. This section may include phase lines or stubs.

• Connector: Co-linear dual-band antennas are equipped with a connector that allows them to be easily connected to a radio or transceiver.

• Gain and Performance: These antennas are designed to provide gain in both frequency bands, improving signal strength and coverage compared to a simple monopole antenna. The phasing section and collinear configuration contribute to their performance.

• Compact Design: Despite their dual-band capability, co-linear dual-band antennas are often relatively compact and suitable for portable and mobile applications.

• Mounting: They can be mounted on various structures, such as vehicles, towers, or masts, depending on the specific application.

• Omnidirectional: Co-linear dual-band antennas are typically omnidirectional, which means they radiate and receive signals equally in all directions, making them suitable for applications where the source of signals may be in different locations.

These antennas are versatile and widely used in scenarios where both VHF and UHF bands are essential for communication, such as public safety, emergency services, amateur radio, and dual-band transceivers for ham radio operators. Their dual-band capability and omnidirectional nature make them valuable for reliable communication in various situations.