SPECIFICATIONS STANDARD *SPECIAL. 200 to 2000 MHz 4 to 40 3 to 8. 30G s 10G s 90% relative Unlimited -25 C to + 50 C -54 C to +70 C. 0.5 oz.

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1 BANDPASS SF SERIES 0-00 MHz NO. OF SECTIONS OR MORE 1.5/1 VSWR BW MIN. 3 db BW SPECIFICATIONS STANDARD *SPECIAL ELECTRICAL Center Frequency (Fc) 3dB Relative Bandwidth (% of Fc) Number of Sections Available Nominal Impedance Maximum Insertion Loss Maximum VSWR Attenuation in the Stopband Maximum Input Power (Average) (Watts to,000 ft.) Maximum Input Power (Peak) (Watts to,000 ft.) ENVIRONMENTAL Shock Vibration Humidity Altitude Temperature Range (Operating) Temperature (Non-Operating) MECHANICAL Approximate Weight Mounting Provisions *Contact Lark Applications Engineering to 00 MHz 4 to 3 to 8 Ω See Curve 1.5/1 See Page 0 X 3dB BW (MHz) (LOSS FACTOR)(Fc MHz) 0 x 3dB BW (MHz) Fc (MHz) G s G s 90% relative Unlimited -25 C to + C -54 C to + C 0.75 oz. per inch See page 53 1 to 00 MHz 4 to 2 to Ω to 0Ω See Curve 1.3/1 See Page See Standard 2,000 G s 15G s 0% relative Unlimited -54 C to + 85 C -54 C to + 0 C 0.5 oz. per inch See page 53 INSERTION LOSS: The maximum Insertion Loss at center frequency is equal to: LF x (N + 0.5) % 3 db BW LOSS FACTOR Where: LF = Loss Factor N = Number of Sections % 3dB BW: 3dB BW (MHz) x 0 Example: A 3 section SF with a center frequency of 00 MHz and a 3dB BW of 0 MHz would have, 2.0 x 3.5 = 7.0 = = 0.9dB

2 1/2 inch DIA. (12.7mm) SF SERIES C1 L C2 SF A A SERIES CENTER FREQUENCY (MHz) MINIMUM 3dB RELATIVE BANDWIDTH (MHz) NUMBER OF SECTIONS INPUT CONNECTOR OUTPUT CONNECTOR 3.0 LARK C DIM. CODE TYPE INCHES MM A B C D E F SMA JACK SMA PLUG TNC JACK TNC PLUG BNC JACK BNC PLUG *Not recommended for use with this series. CONNECTORS AVAILABLE ON SF SERIES: LARK C DIM. CODE TYPE INCHES MM G H *L *M S N JACK N PLUG SOLDER PIN AXIAL SOLDER PIN RADIAL SPECIAL LENGTH: The approximate length of a Lark SF series filter can be determined by the formula: ( 0.5 N + 2 ) x LC = L %BW Where N is the number of sections used, % BW is: 3dB BW (MHz) x 0 LC is the length constant at the specified center frequency, LENGTH CONSTANT L is the dimension between the connectors; C 1 and C 2 are the connector lengths as shown above. All of the length information given here is approximate. Exact length specifications must be quoted by the factory. If a special length is needed, please submit all of your requirements - both electrical and mechanical. This will enable Lark Engineering to quote the optimum design for your application. 1.2 Example: A 3 section SF with a center frequency of 00 MHz a 3dB BW of 0 MHz and SMA jack input and output connectors would be: 1.0 ( ) x 1.0 = C 1 + C In most cases, the L dimension is rounded to the nearest 1/4 inch which in this instance would be 1.75 inches and 0.8 the O.A.L. is: = 3.35 inches. To convert inches to millimeters multiply x 25..

3 STOPBAND ATTENUATION The graphs on the following pages define the normal specification limits on attenuation for Lark bandpass filter series HP, HQ, SF, and SM. The minimum level of attenuation in db is shown as a number of 3dB bandwidths from center frequency. Since the frequency characteristics vary for differing bandwidths, it is necessary to establish specifications for each bandwidth of filter. The different graphs represent various 3dB percentage bandwidths. Intermediate values should be interpolated. The 3dB percentage bandwidth is defined as follows: The exact relationship is as follows: 3dB Bandwidth (MHz) x 0 Center Frequency (MHz) 1. 3dB Bandwidths Rejection Frequency - Center Frequency From Center Frequency = (MHz) (MHz) 3dB Bandwidth (MHz) Example: Given: 2. Center Frequency = 0 MHz Minimum 3dB Bandwidth = MHz Number of Sections = 5 Find: Minimum attenuation levels at 255 MHz and 348 MHz. 3dB BW s from Fc = = and = As the 3dB bandwidth is exactly % of the center frequency, the answer can be read directly from the % graph. Using the 5 section curve at the point -1.5 (255 MHz) we find the minimum level of attenuation is 36dB. At +1.6 (348 MHz) the minimum level of attenuation is 48dB. For special requirements, please contact our Application Engineering Department. 3dB BANDWIDTH APPROX. 5% OF Fc

4 TUBULAR SERIES 3dB BANDWIDTH APPROX. % OF Fc 3dB BANDWIDTH APPROX. % OF Fc

5 TUBULAR SERIES 3dB BANDWIDTH APPROX. % OF Fc 3dB BANDWIDTH APPROX. % OF Fc

6 MOUNTING DIMENSIONS ADJUSTABLE CLIPS "B" "C" DIA. TYP. "D" C L "A" C L MODEL A DIA. B C DIA D SM SF HQ HP 3/8 1/2 3/4 1 1/ FIXED BLOCKS.925 * 4 x "D" TYP. "F" "E" "B" "A" "C" MODEL A DIA. B C D E F SM SF HQ HP 3/8 1/2 3/4 1 1/ UNC-2B x 3/32 DP 4- UNC-2B x 3/16 DP 6-32 UNC-2B x 1/4 DP -32 UNC-2B x 1/4 DP *Dimension from connector tip to mounting holes are shown only for SMA jacks. For other connectors, add or subtract the difference of C dimension from connector code. /M after the part number denotes mounting blocks /C after part number denotes mounting clips Refer to page 6 for correct part number sequence and usage.

Part Numbering System

Part Numbering System Reactel Filters can satisfy a variety of filter requirements. These versatile units cover the broad frequency range of 2 khz to 5 GHz, and are available in either tubular or rectangular packages, connectorized