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TV
TRANSPOSERS |
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IMTEL Microwaves produces TV transposers that can operate in whole
UHF or VHF band, with output power of 2 W, 5 W, 10 W, 20 W, 50 W,
100 W, 300 W, 500 w OF 1000 W.
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This product line is based on modular concept, which gives particular
benefits in channel setting, device upgrading and maintaining. The
device is built of modules that are standardized in function and
features, so the device is built upon the same block diagram, regardless
to the operating band.
These TV transposers comprise following modules:
- Down converter, with channel
filter, VSB SAW filter and video carrier recognition circuit,
- Two RF coherent synthesizers,
for receiving and transmitting frequencies,
- RF Synthesizers,
- Up converter, with linearity
pre-correction circuit, channel filter and AGC,
- Amplifier stage, which consists
of balanced RF power amplifiers chain with 3 dB stripline quadrature
couplers or Wilkinson type dividers / combiners,
- Band-pass and notch filter, and
- Control unit with monitoring,
alarming and damage prevention features.
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TV tranposers with output power up to 50 W are realized in
one box with standard dimensions: 19" wide and 5H high. TV
transposers with higher output powers are realized
as a combination of tranposing exciter and adequate TV
amplifier.
The devices can be supplied for operation with any negative modulation
standard.
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BLOCK DIAGRAM
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TECHNICAL CHARACTERISTICS
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