KEYMILE’s HY101-WT2400 is a voice frequency telegraphy modem in a compact standard housing. Some of the typical areas this tried-and-tested technology is used include traditional telecontrol applications, such as the transmission of serial data over long distances along railway lines, or narrow band applications in energy suppliers’ networks.

Even today, voice frequency telegraphy, which this new modem from KEYMILE supports, is still ideal for certain areas. These include transmitting serial data along railway lines, or using it for energy suppliers’ narrow band applications. In these environments, the products need to last for decades and have reliable and consistent support from the manufacturers. While other suppliers have long since abandoned this market, KEYMILE is offering state-of-the-art voice frequency telegraphy modems and is still meeting the continued demand for these types of products.

The HY101-WT2400 is an attractively priced and compact modem for voice frequency telegraphy, which network operators can mount on a top hat rail. This is a multi-purpose FSK modem to International Telecommunication Union (ITU) standards, which can therefore also be connected to other data-transmission devices. The system is designed to transmit data via two or four-wire copper lines at symbol rates of 50baud to 2,500baud. Distances of up to 30km can be bridged on unloaded telecommunications cables with 0.8mm in diameter. A V.24/V.28 interface (RS-232) provides the connection to the data terminal equipment.

Digital processing of analogue signals enables exact reproduction of transmission behaviour, is less sensitive to ambient influence and offers long-term frequency stability. A comparison of analogue switches is no longer necessary. Customers will be able to use the VFT modems for years to come without encountering the customary problems of specialised components being discontinued.

There’s still strong demand for voice frequency telegraphy. While other manufacturers are increasingly withdrawing from this market segment and discontinuing products, KEYMILE can still offer innovative solutions thanks to the flexible, software-based technology. The new HY101-WT2400 underlines this long-term approach to the market.

The new HY101-WT2400 modem is available from April. For more information, please contact KEYMILE.