Modem for data over HF Radio Manufacturer,Supplier and Exporter in India
Product Code : EL-CE-10417
Quick Answer: This modem sends data over HF radio using a selective repeat protocol at 2400 bps with 16-channel QPSK modulation. It has built-in data compression and connects to the transceiver through a 9600 baud RS232 interface.
Last updated: October 2026
Key Features
- Selective repeat protocol, 2400 bps, 16-channel QPSK modulation
- 80 baud CHIRP link establishment
- Built-in data compression
- Uncompressed data transfer of up to 1475 bps
- 9600 baud RS232 transceiver interface with AT-based port
- 13.5 V DC nominal power (250 mA max), 9 to 16 V DC operating range
Technical Specifications
| Specification | Value |
|---|---|
| Data mode | Selective repeat protocol, 2400 bps, 16-channel QPSK |
| Link establishment | Proprietary 80 baud CHIRP |
| Uncompressed data rate | Up to 1475 bps |
| Transceiver interface | 9600 baud RS232, AT-based port |
| Primary power | 13.5 V DC nominal (250 mA max), 9 to 16 V DC range |
| Temperature | 0°C to 55°C |
| Size | 210 mm W x 240 mm D x 65 mm H, including rear connectors |
About This Product
This modem is used with an HF radio transceiver to send data over the radio link, connecting to the transceiver through its RS232 interface. Links are set up with an 80 baud CHIRP method, and in-built compression raises the transfer rate above the uncompressed figure of up to 1475 bps. Institutions and suppliers in Bangladesh, Fiji, Tajikistan, New Zealand and Croatia can obtain the modem for data over HF radio from School Equipment India.
Frequently Asked Questions
What power supply does the HF data modem need?
It needs 13.5 V DC nominal, drawing up to 250 mA, and operates over a 9 to 16 V DC range.
Related: Communication Equipment, Mobile station radio kit, Radio Manpack Kit.
For a quotation on the modem for data over HF radio, contact School Equipment India.