Bandpass Cavities (127mm) DB4001 DB4001 series features quarter w

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Bandpass Cavities (127mm) DB4001 DB4001 series features quarter w

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Bandpass Cavities (127mm) DB4001
DB4001 series features quarter wave high coaxial cavity. reduces interference that frequency rejectable, when installed between antenna receiver. increased rejection three cavity models also offered. Adjustable Selectivity Rotatable coupling loops 0.5, obtain corresponding total attenuations with minimum attenuation desired signal. Field Tunable Cavities shipped factory tuned; however, they retuned field with measuring equipment. Frequency Stable Invar rod, with nearly zero expansion, assures frequency stability over wide temperature range. Positive Contact Maintained indented ring with spring compression. Rugged plates made chromated aluminum, coupling loops copper, center conductor piston silver-plated copper. Mechanical Data
DB4001-1 Dimensions (mm) Individual cavity Maximum, outside (with tuning extended) weight lbs. (kg) Shipping weight lbs. (kg) Outer conductor Inner conductor Tuning Coupling loops Connector terminations Finish (127)x21 (533.4) (177.8)x6 (152.4) (685.8) (2.27) (3.86) Aluminum Silver plated copper Invar Copper UHF-Female Decibel BlackDB4001-2 (127)x27 (533.4) (177.8)x13 (330.2) (685.8) (5.9) (8.16) Aluminum Silver plated copper Invar Copper UHF-Female Decibel Black
Non-Corrosive Galvanic corrosion minimized using similar materials plating chemical conversion treatment. Mounting mounted position. Several cabinets available. Ordering Information
Cavity DB4001-1 Cavity DB4001-2 Three Cavity DB4001-3 Freq.- 148-174
optional connector Example: DB4001N-1 Cables mounting rails dual triple models included. Optional cabinets include DB5014 weatherproof housing DB5015 DB5017 weather resistant cabinets.
Electrical Data
DB4001-3 (127)x21 (533.4) (177.8)x13 (330.2) (685.8) (9.07) (11.34) Aluminum Silver plated copper Invar Copper UHF-Female Decibel BlackFrequency Range Table Above Insertion loss (desired frequency) Adjustable cavity cavity cavity
Attenuation (undesired frequency) curves Impedance ohms VSWR* resonance (maximum) Maximum power input (continuous duty) watts with insertion loss cavity loss loss loss Temperature range (for negligible frequency shift)
*VSWR maximum with loop setting will 2:1.
Typical Selectivity Characteristics DB4001
DB4001-1 Single Cavity Attenuation-dB Frequency-MHz DB4001-2 Cavity Attenuation-dB Frequency-MHz DB4001-3 Three Cavity Attenuation-dB Frequency-MHz
Triple Cavity DB4001-3
DECIBEL PRODUCTS, ALLEN TELECOM COMPANY
PHONE 1-800-676-5342 (214) 631-0310
1-800-229-4706 (214) 631-4706
WWW.DECIBELPRODUCTS.COM

Bandpass Cavities (127mm) DB4001 DB4001 series features quarter w

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