Thomcast Introduces Ultimate 1 kW Solid State Digital Transmitter

Presenting domestic broadcasters a new, inexpensive, lower power DTV transmitter option, Thomcast introduces the Ultimate 1 kW Digital Solid State Transmitter. Based upon renowned Thomcast transmitter technology, the Ultimate 1 kW Transmitter is specifically suited for digital TV applications, and designed to meet the new UHF requirements in the digital era.

Wayne Hoffman, Thomcast Communications CTO and Vice President of Engineering, explains the significance of the Ultimate 1Kw introduction to the domestic broadcast market; "The 1 kW Ultimate has fantastic applications for rural broadcasters who are being required to "go digital". This LPTV transmitter may be low power, but it is feature rich!"

Thomcast Ultimate Transmitters feature a solid state and cable-free design, providing the advantage of ease of maintenance and high reliability, a complete control and monitoring system, and an innovative hot-pluggable module design. In addition, the Ultimate 1kW features:

• Broadband LDMOS Amplifiers
• Compact Design
• Integrated Air Cooling System
• Digital Intelligent Transmitter, with Digital Adaptive Precorrection (DAP)
• Redundancy via parallel operating amplifiers and power supplies
• Standby second exciter option

Digital Adaptive Precorrection

Digital Adaptive Precorrection (DAP) is an integrated function of the Thomcast 8-VSB Adapt Exciter/Modulator. It provides precise digital correction of 1) Nonlinear distortions created by the active amplifier devices, such as amplitude and phase distortions; and 2)linear distortions that are created by the high-power passive RF system, such as group delay and frequency response distortions.

Thomcast Communications Inc., 104 Feeding Hills Rd., Southwick, MA 01077. Tel: 570-403-5220; Fax: 413-569-0679.