Bird Technologies 44-83X-50-XD-A-Z User Manual

TX RX Systems Brand

Ceramic Transmit
Combiner

700/800 MHz Series

Bird Technologies Group, TX RX Systems brand has a 700/800 MHz Ceramic Transmit Combiner. The
system is the product family evolution that began with the UHF combiner. The 700/800 Ceramic
Transmit Combiner provides the high performance with minimum interference you have come to
expect from Bird.

PROBLEMS } SOLUTIONS

Reduce the number of antennas on a tower

} Ceramic Cavity Combiner allows you to share up to eight

channels on the same antenna.

Minimize Tower size and maximize site space

} Smaller footprint optimizes valuable rack space.

Odd number of channels or number other than multiples of six

} Congurable in multiples of two channels per block.

Number of channels exceeds limits of current product

} Systems utilizing this product in place with 32 channels.

Current system not able to handle high power

} Rated fro 110W continuous per channel.

APPLICATIONS

The 700/800 MHz Ceramic Transmit Combiner can
accommodate multiple, high power channels utilizing
minimal rack space through the compact, cost-effective
ceramic-based design.

Expandable in cavity increments of two channels at a time.

Available in single or dual isolator congurations for GTR or
TRBO installations.

Small footprint and temperature stable for close installations.

Ceramic Transmitter Combiner

700/800 MHz Series

SPECIFICATIONS

Range 763-776 MHz

851-869 MHz

Number of
Channels

Isolator Type Single Junction
Insertion loss @ ch spacings

500 kHz 2 channels <2.7 dB

250 kHz 2 channels <3 dB

150 kHz 2 channels <3.8 dB

Continuous
power per
channel

Minimum return
loss at feedline,
(due to antenna
system failure)

Input return loss 20 dB
Output return

loss

Connectors ­Input

Output 7/16 DIN female
Temperature
Range

Height (nominal) 2 channels 7 in.

Width 19-in Rack Mount

Depth < 10 in.

2
4
6
8

4 channels <3 dB
6 channels <3.3 dB
8 channels <3.5 dB

4 channels <3.3 dB
6 channels <3.6 dB
8 channels <3.8 dB

4 channels <4.1 dB
6 channels <4.4 dB
8 channels <4.7 dB

110 W

3 dB

> 10 dB

N-female

-10C to +50C

4 channels 7 in.
6 channels 10.5 in.
8 channels 14 in.

Model # Schemes

44-XXY-50-XD-A-Z

TX Combiner

Model number example:
44-83C-50-1D-A-2
Two channel system, 776 MHz, with single isolator, 19" rack mountable

Available in congurations above 16 channels as a designed system.
Please consult Bird Technologies on system quote.

Frequency Band
83C = 763-776 MHz
83D = 851-869 MHz

Ceramic
Cavities

1 = Single

Isolator

2 = Dual

Isolator

19” Rack
Mountable

# of channels
2, 4, 6, or 8
must be ordered
in two channel
increments

Weight
(Approximate)

Transmit_CeramicCombiner_700-800MHz-01142013

2 channels 13 pounds
4 channels 27 pounds
6 channels 40 pounds
8 channels 53 pounds

30303 Aurora Rd. Solon, OH 44139 866.695.4569 www.bird-technologies.com