03.27.2003 12:00 AM
Ai To Debut ATSC DTV Repeater At NAB
Acrodyne (Ai) will introduce an ATSC DTV repeater at NAB2003 that can power levels up to 1 kW, extend the DTV broadcasting area and cover its shadow area.

The DTVR-100U includes an 8-VSB receiver, 8-VSB modulator, upconverter, high-power amplifier and on-channel band-pass filter and comes with optional power metering, status monitoring and remote control systems.

The 8-VSB receiver generates a demodulated SMPTE 310M TS output and is composed of three main chipsets that include channel coding, 8-VSB filter and vector modulation.
The model mounts on the pre-corrector board and allows for correction of system group delay and nonlinearity of the HPA.

According to Ai, the channel converter module has low phase noise and high-frequency stability using a multi-loop PLL local oscillator and high stable reference clock. The amplifier uses LDMOS transistors and senses temperature, current and voltage and has an isolator for protection from output mismatching. A hot standby configuration is also available.


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Thursday 10:05 AM
NAB Requests Expedited Review of Spectrum Auction Lawsuit
“Broadcasters assigned to new channels following the auction could be forced to accept reductions in their coverage area and population served, with no practical remedy.” ~NAB


 
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