45. APRS 9600 Baud Digipeater. ZS6EY & ZS6RVC. January 2010.

9600 baud APRS on the 70cm band emerged as an evolution of the traditional 1200 baud Automatic Packet Reporting System (APRS). Here's a brief overview:

1. Standard APRS (1200 baud):

   - Frequency: Typically operates on 144.39 MHz in the 2-meter band.

   - Baud Rate: Uses 1200 baud (bits per second) for data transmission.

   - Modulation: Narrowband FM (Frequency Modulation).

   - Purpose: Primarily used for position reporting, weather data, and messaging among amateur radio operators.

   - Hardware: Commonly supported by various APRS-capable radios and TNCs (Terminal Node Controllers).

2. 9600 baud APRS:

   - Frequency: Operates on the 70cm band (typically around 440 MHz).

   - Baud Rate: Increased to 9600 baud for faster data transfer.

   - Modulation: Still uses Narrowband FM.

   - Advantages:

     - Higher Data Rate: Allows more frequent position updates and faster messaging.

     - Reduced Channel Congestion: Faster transmissions free up the channel more quickly.

   - Challenges:

     - Equipment Compatibility: Not all radios and TNCs support 9600 baud APRS.

     - Antenna Considerations: Antennas need to be optimized for the 70cm band.

     - Limited Range: Due to higher frequency, coverage may be shorter compared to 2 meters.

3. Supported Radios:

   - Some radios that can handle 9600 baud APRS include:

     - Yaesu FT-991A, FT-8900, FTM-300D

     - Kenwood TM-V7

     - Tait TM8200 and TM8100 series

     - Alinco DR06

     - Others with compatible hardware and software configurations¹.

4. Software and Configuration:

   - You'll need compatible software (such as TNC firmware or APRS software) to enable 9600 baud APRS.

   - Ensure proper interfacing between your radio and TNC/modem.

   - Experimentation and community knowledge-sharing play a crucial role in advancing 9600 baud APRS.

Remember that while 9600 baud APRS offers advantages, it's essential to consider equipment compatibility, antenna placement, and local regulations. If you're interested in experimenting with higher-speed APRS, explore the available options and share your experiences with the amateur radio community! 📻🌐²³.

Source: Conversation with Copilot, 2024/07/13

(1) packet: transceivers [Online Amateur Radio Community Wiki]. https://wiki.oarc.uk/packet:transceivers.

(2) Requirements for 9600 baud - Amateur Radio Stack Exchange. https://ham.stackexchange.com/questions/5145/requirements-for-9600-baud.

(3) Setting up APRS on the Yaesu FT3DR Handheld Transceiver. https://www.jpole-antenna.com/2020/01/20/setting-up-aprs-on-the-yaesu-ft3dr-handheld-transceiver/.

(4) undefined. https://www.alinco.com/Products/ham/mbl/DR-03_06/.

(5) undefined. https://www.oarc.uk/files.