Q:
What’s the difference between a free-to-air
distribution amplifier such as a DW30 and a
multichannel hybrid distribution amplifier such
as ACA864?
A:
A multichannel amplifier such as the ACA864
is designed for applications that require more
than 40 channels and is optimised to minimise
unwanted intermodulation products when
amplifying so many channels at a high output
level. A free-to-air amplifier such as the DW30
amplifier is designed for applications with
fewer channels (typically 6 to 8) and therefore
requires a lower output capability performance,
hence the lower price.
TIP:
The number of channels being amplified will
determine the amplifier to be used. Check the
maximum output specification of the amplifier
and each time 3dB is subtracted from that
figure, it is possible to double the channels
being amplified.
For
example, ACA864 max output:
2
channels:
120dB
@ -60dBIMR
4
channels:
117dB
@ -60dBIMR
8
channels:
114dB
@ -60dBIMR
Features
All
GME Kingray Distribution Amplifiers incorporate
a unique push button equalisation system.
GME
Kingray Distribution Products allow all future
and some current products to be line powered to
and around if required.
The
DXX range of cable amplifiers can provide
solutions for all your cable television
networks. Due to the new forms of technology,
GaAs has been employed that can give the
performance of 2x ‘standard push-pull’ or
‘power doubled amplifiers’ in one unit.
There are locally or remotely powered models
with a full range of optional modules available
all in fully shielded IP54 cases. Note: The
ACA88428/80428 and DXX amplifiers are all
available with either 5-30/44-860MHz or
5-65/85-860MHz return path splits.
(For
optional tapped or split outputs and additional
DXX connectors refer to accessories.)
Kingray
has just developed the first Australian designed
and manufactured satellite IF distribution
amplifier. The SAT32 has fixed 3dB of
equalisation with 32dB of gain at 2050MHz to
29dB gain at 950MHz. There is a 20dB attenuator
with an optional power switch available to feed
the L.N.B. The amplifier can run on voltages
from 8-18VDC allowing the horizontal or vertical
transponders to be powered, depending on the
power supply used (currently packed with a 18VDC
power supply). The SAT32 can be locally or
remotely powered depending on the requirements,
with a free-to-air diplexing port available for
MATV integration. [120mA @ 18VDC]
Teleste’s
MHA332 is a satellite IF distribution amplifier
with 5dB of fixed equalisation from 38dB at
2050MHz to 33dB at 950MHz. There is a 20dB
attenuator with an optional power switch
available to feed the L.N.B. of 18VDC. This unit
can be incorporated into the Teleste traditional
mounting system in the second last position
allowing the MHA278 to be used in conjunction
(as seen in picture). There is a free to air
port available for the integration purpose if
required. [170mA @ 18VDC]
A
simple line powered SAT IF amplifier. It employs
13dB of fixed gain at 950MHz and 20dB of fixed
gain at 2050MHz. It can be powered by a 13V or
18V power supply.
TIP:
Due to the up take of satellite in many
multi-dwelling units and commercial systems, a
simple solution is available without having to
run new cables (as long as the existing coaxial
cables are of good quality). The satellite IF
signals can be injected into the existing
free-to-air system using the SAT32 to combine
the signals and a SATDP to separate them.
Kingray
has just developed the first Australian designed
and manufactured satellite IF distribution
amplifier. The SAT32 has fixed 3dB of
equalisation with 32dB of gain at 2050MHz to
29dB gain at 950MHz. There is a 20dB attenuator
with an optional power switch available to feed
the L.N.B. The amplifier can run on voltages
from 8-18VDC allowing the horizontal or vertical
transponders to be powered, depending on the
power supply used (currently packed with a 18VDC
power supply). The SAT32 can be locally or
remotely powered depending on the requirements,
with a free-to-air diplexing port available for
MATV integration. [120mA @ 18VDC]
Teleste’s
MHA332 is a satellite IF distribution amplifier
with 5dB of fixed equalisation from 38dB at
2050MHz to 33dB at 950MHz. There is a 20dB
attenuator with an optional power switch
available to feed the L.N.B. of 18VDC. This unit
can be incorporated into the Teleste traditional
mounting system in the second last position
allowing the MHA278 to be used in conjunction
(as seen in picture). There is a free to air
port available for the integration purpose if
required. [170mA @ 18VDC]