Specifications

2-3.2
Proprietary and Confidential
BLOCK DIAGRAM VAX 2 PA SYSTEM
RF Output
─
Σ
Power Supply
Power Supply
2 PA
BLOCK
Exciter
\
Controller
Atten.
LPU
Power Supply
PA
10 RU
LPU output varies to
change Tx output
One PA Modules (2
pallets with one
FET each). Low
output power, little
chance of failure.
All 3 PA modules identical.
PS or amp pallet failure in
LPU causes no output.
PA
Power levels (pre-filter)
Parallel
PA’s
TV COFDM: 400 W
DAB: 600 W
ATSC: 750 W
Analog: 1 kW
PA
50-80 mW
20 dB
8-11W
750W
ATSC
190W