Specifications

ManualsBrandsUBS-Axcera ManualsElectronics6000-Watt UHF Transmitter

UHF Solid State Transmitters

835A-3, 835A-4, 835A-5, 835A-6

The 835A represents the state of the art in

solid state UHF transmitters. High

performance, redundancy, and simplicity are

combined in a very reliable unit.

Using parallel high gain amplifiers, the 835A

can be configured for 3kW, 4kW, 5kW, or

6kW operation. Combined aural/visual

amplification is achieved with very good

intermodulation performance, thanks to

highly linear amplifiers and extensive

correction capability.

Front panel samples, status, and metering,

most of which are remote controllable, allow

for convenient system monitoring. As with all

Axcera products, servicing is made easy with

slide out assemblies that require no extender

cards. This allows the circuits to be accessed

for maintenance or adjustments even while

on the air.

Summary of content (4 pages)

PAGE 1
UHF Solid State Transmitters 835A-3, 835A-4, 835A-5, 835A-6 The 835A represents the state of the art in solid state UHF transmitters. High performance, redundancy, and simplicity are combined in a very reliable unit. Using parallel high gain amplifiers, the 835A can be configured for 3kW, 4kW, 5kW, or 6kW operation. Combined aural/visual amplification is achieved with very good intermodulation performance, thanks to highly linear amplifiers and extensive correction capability.
PAGE 2
UHF Solid State Transmitters UHF Solid State Transmitters High Performance Exciter The exciter, designed and built by Axcera, contains the circuitry to convert the input video and audio signals to a combined, modulated RF signal which drives two very linear phase and gain modules. An optional second exciter with automatic exciter switcher is available for added redundancy. Video/Visual Modulation The video signal is processed in several ways prior to modulation.
PAGE 3
UHF Solid State Transmitters Block Diagram - 835A UHF 5kW Transmitter PA Exciter PA IPA Splitter PA 5-Way Combiner Bandpass/ Trap Filter PA Exciter Switcher PA Splitter Optional Second Exciter with Automatic Exciter Switcher UHF Solid State Transmitters RF Output 5kW Peak Visual 500W Average Aural Combined RF Hybrid Combiner Video Audio PA PA Video Audio IPA Exciter Combined RF Splitter PA 5-Way Combiner PA PA Features and Benefits ■ Utilizes 100% solid state circuitry for high reliab
PAGE 4
835A-3, 835A-4, 835A-5, 835A-6 Visual Performance Power Output (Peak) 3000, 4000, 5000, or 6000 watts Output Impedance 50 ohms Output Connector 3 1/8" EIA Frequency Range 470 to 860 MHz Carrier Stability ±1 kHz (standard) ±350 Hz (optional) Regulation of RF Output Power 3% Output Variation (over 1 frame) 2% Sideband Response (System M/N-others on request) -3.58 MHz -42 dB -1.25 MHz and below -20 dB -0.5 to +3.58 MHz ±0.5 dB 3.58 MHz to 4.18 MHz +0.5, -1.0 dB Freq Response vs. Brightness ±0.