Bird Technologies 42-35A-02280-X User Manual

VHF Airband Cavity Filter

For Tx Combiner/Rx Multicoupler

• 8” diameter cavity for easy 19” rack mounting

• RoHS compliant for sale in European Union

• Cavity as a building block can be used in Transmit Combiner,
Receive Multicoupler, Cavity filter (bandpass, vari-notch, or
series-notch), or Duplexer

• Best-in-class specification for multi-channel systems with
minimal guardbands

118-137 MHz

Cavity Receive Multicoupler Cavity Transmit Combiner

Model Numbers*

Cavity Size 8”(203 mm) diameter 8”(203 mm) diameter 8”(203 mm) diameter 8”(203 mm) diameter

Number of Cavities Per Channel 1 2 1 2

Cavity tuning range 118-137 MHz 118-137 MHz 118-137 MHz 118-137 MHz

Minimum Channel Separation 200 kHz 200 kHz 200 kHz 200 kHz

Cavity Insertion Loss 0.9 dB 0.9 dB 0.9 dB 0.9 dB

Maximum Channel Insertion Loss

(When configured as a combiner or multicoupler)

Isolator Insertion Loss n/a n/a 0.5 dB 0.5 dB

Isolation, channel to channel n/a n/a 30 dB 35 dB

Isolation, Antenna to Transmitter n/a n/a 25 dB 25 dB

Maximum Power per channel

(at minimum channel separation)

Maximum Power per channel

(at wider channel separation)

* X at the end of model number indicates number of channels: 2~6 channels

42-35A-02094-X 42-35A-02280-X 44-35A-02093-X 44-35A-02279-X

2.0 dB 2.5 dB 2.5 dB 3.0 dB

Rx only Rx only 50 W 50 W

Rx only Rx only 80W typical 80W typical

Bird® Technologies Group combines the industry leading brands of both Bird Electronic and TX RX Systems and is a global, innovative supplier of RF products, systems, services and

educational solutions. Bird® Technologies Group reserved the right to modify specifications or discontinue any product without notice.

www.bird-technologies.com 440.248.1200/866.695.4569 [e-mail]

691VHFA118_137-DS09152006

Amplitude (dB)

VHF Airband Cavity Filter

118-137 MHz

For Tx Combiner/Rx Multicoupler

Passband for One Channel

Amplitude (dB)

Frequency (MHz)

Passbands for a 3-channel System

Bird® Technologies Group combines the industry leading brands of both Bird Electronic and TX RX Systems and is a global, innovative supplier of RF products, systems, services and

educational solutions. Bird® Technologies Group reserved the right to modify specifications or discontinue any product without notice.

www.bird-technologies.com 440.248.1200/866.695.4569 [e-mail]