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Analog Radio Connection to Swift Agent Guide

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This article describes how to connect an analog radio to a Swift Agent in analog mode. It covers VOX operation, CSQ detect, audio levels, PIN configuration, and power wiring. The goal is to ensure stable voice transmission when using non MOTOTRBO radios with a Swift Agent A100 or A200.

To enable analog mode in Swift CPS:

Tools → Options → Allow changing device operating mode
Device → Read → Update firmware → Analog RoIP Gateway
• Non MOTOTRBO radios work only in analog voice mode.
• Swift A100 / A200 firmware 04.05.03 adds VOX support and requires server version 5.4 or newer.
• Swift CPS Version 2.0.0.247 adds VOX RX detect on the Agent side.

VOX Mode

If the radio has a CSQ detect PIN, use CSQ detect. If CSQ is not available use VOX, and CSQ detect PIN must be unassigned is Swift Agent configuration.

• Analog radios without CSQ generate continuous static which holds RX active, and VOX filters this noise and reacts only to voice.
• VOX may require about 2 seconds to activate and a short phrase may be required before the main transmission.

CSQ detect Mode

• The analog station must support Audio In, Audio Out, External PTT, and CSQ detect.
• External PTT must be configured on both devices if used.
• Both devices must share the same stable power source.

Step 1. Logical Connection Scheme

An analog station connects to the Swift Agent A200 via the rear audio socket.

The audio gain on the jack is disabled by default. Default Swift CPS slider positions match this state.

Default analog audio levels:

• Output 80 mV
• Input 330 mV

These levels are matched to MOTOTRBO accessory ports.

The maximum slider positions represent the maximum voltage the Agent can receive or transmit.

If the analog station cannot reduce its TX audio level within 30 mV to 3 V, an external attenuator is required. This prevents damage to the Agent audio input.

Step 2. External PTT and CSQ Detect PINs

External PTT

• Default activation is active low to ground. Deactivation occurs at +5 V.
• +5 V pullup is enabled by default.
• Pullup can be enabled on the analog station, on the Swift Agent, or on both.
• Default Output PTT is on PIN 5 with +5 V pullup.

Swift Agent can also use PIN 7 with +12 V pullup if required.

CSQ Detect

The scheme of the command PIN:

Default Input CSQ is PIN 6.

• Default activation is active low to ground. Deactivation occurs at +5 V.
• +5 V pullup is enabled by default.
• Threshold levels: Pin On > 2.5 V, Pin Off < 1.9 V
• Debounce is 100 ms by default.
• If pullup is disabled, select the correct logic level.

Logic Levels Table

Logic level Pin Off Pin On
1.8 V <0.63 V >1.17 V
3.3 V <0.8 V >2.0 V
5 V TTL <0.8 V >2.0 V
5 V TTL CMOS <1.5 V >3.5 V
9 V <2.7 V >6.3 V
12 V <3.6 V >8.4 V

Step 3. Power Supply Wiring

The analog station and the Swift Agent must share the same 12 V power source including plus, minus, and GND.

Separate power supplies are not recommended due to voltage differences.
Do not power the Agent from the station power output.

Notes

Older radios such as DEM400 and XiR M3688 do not support digital data features and can be used only in analog voice mode through Swift Agent.


Analog Radio Connection to Swift Agent Guide

This article describes how to connect an analog radio to a Swift Agent in analog mode. It covers VOX operation, CSQ detect, audio levels, PIN configuration, and power wiring. The goal is to ensure stable voice transmission when using non MOTOTRBO radios with a Swift Agent A100 or A200.

To enable analog mode in Swift CPS:

Tools → Options → Allow changing device operating mode
Device → Read → Update firmware → Analog RoIP Gateway
• Non MOTOTRBO radios work only in analog voice mode.
• Swift A100 / A200 firmware 04.05.03 adds VOX support and requires server version 5.4 or newer.
• Swift CPS Version 2.0.0.247 adds VOX RX detect on the Agent side.

VOX Mode

If the radio has a CSQ detect PIN, use CSQ detect. If CSQ is not available use VOX, and CSQ detect PIN must be unassigned is Swift Agent configuration.

• Analog radios without CSQ generate continuous static which holds RX active, and VOX filters this noise and reacts only to voice.
• VOX may require about 2 seconds to activate and a short phrase may be required before the main transmission.

CSQ detect Mode

• The analog station must support Audio In, Audio Out, External PTT, and CSQ detect.
• External PTT must be configured on both devices if used.
• Both devices must share the same stable power source.

Step 1. Logical Connection Scheme

An analog station connects to the Swift Agent A200 via the rear audio socket.

The audio gain on the jack is disabled by default. Default Swift CPS slider positions match this state.

Default analog audio levels:

• Output 80 mV
• Input 330 mV

These levels are matched to MOTOTRBO accessory ports.

The maximum slider positions represent the maximum voltage the Agent can receive or transmit.

If the analog station cannot reduce its TX audio level within 30 mV to 3 V, an external attenuator is required. This prevents damage to the Agent audio input.

Step 2. External PTT and CSQ Detect PINs

External PTT

• Default activation is active low to ground. Deactivation occurs at +5 V.
• +5 V pullup is enabled by default.
• Pullup can be enabled on the analog station, on the Swift Agent, or on both.
• Default Output PTT is on PIN 5 with +5 V pullup.

Swift Agent can also use PIN 7 with +12 V pullup if required.

CSQ Detect

The scheme of the command PIN:

Default Input CSQ is PIN 6.

• Default activation is active low to ground. Deactivation occurs at +5 V.
• +5 V pullup is enabled by default.
• Threshold levels: Pin On > 2.5 V, Pin Off < 1.9 V
• Debounce is 100 ms by default.
• If pullup is disabled, select the correct logic level.

Logic Levels Table

Logic level Pin Off Pin On
1.8 V <0.63 V >1.17 V
3.3 V <0.8 V >2.0 V
5 V TTL <0.8 V >2.0 V
5 V TTL CMOS <1.5 V >3.5 V
9 V <2.7 V >6.3 V
12 V <3.6 V >8.4 V

Step 3. Power Supply Wiring

The analog station and the Swift Agent must share the same 12 V power source including plus, minus, and GND.

Separate power supplies are not recommended due to voltage differences.
Do not power the Agent from the station power output.

Notes

Older radios such as DEM400 and XiR M3688 do not support digital data features and can be used only in analog voice mode through Swift Agent.


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