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  ARRA 3953-3 Continuously Variable Attenuator
The ARRA 3953-3 attenuator features high resolution of trimming over a 3 dB range with minimal change in phase length, and exhibits excellent flatness over it's frequency range of 1.0 to 1.5 GHz. RF Power is 5 Watts Max. It utilizes a multi-turn, non-translating shaft with a locking device. Low 1.4 VSWR; Low 0.2 dB Insertion Loss.
 ARRA 5844-40 4 to 8 GHz 40 dB Level Set Attenuator
Attenuation Range: 0 to 40 dB
Max. VSWR: 1.5
Max. Insertion Loss: 0.50 dB
RF Power: 5 Watts average, 3kW peak
Resettability: 0.1 dB or better
Connectors: SMA(f)
 EMCO 2.0 to 4.0 GHz Variable Attenuator
Engelmann Microwave Company Model A802N. Has Type N(m/f) connectors. Removed from working test system.
 General Microwave Programmable RF Attenuator
Model 329 2-80 dB 2 - 4 GHz
Min. Step 0.05 dB
Max. Attenuation 80 dB
Note: File photo shown - actual item may have cable that has been
cut-off, with the plug still on unit.
HP 33320H 0-11 dB Step Attenuator DC to 18 GHz
The HP 33320H is configured for designing into microwave systems and instruments. It has SMA connectors and covers a range of DC to 18 GHz. Permanent magnet latching design and automatic dc current interrupts simplify programmable drive circuit design. It features fast-switching solenoids; attenuation programming is done through a 12-pin (Viking TBR12-101V) connector
 HP 8491B DC to 18 GHz 10 dB Attenuator
Has Type N connectors. SWR (Max): 1.2 (dc to 8 GHz), 1.3 (dc to 12.4 GHz), 1.5 (12.4 to 18 GHz). Maximum input Power: 2 W (100 W Peak).
Has APC-7 Connectors. SWR (Max): 1.15 (dc to 8 GHz), 1.25 (dc to 12.4 GHz), 1.35 (12.4 to 18 GHz). Maximum input Power: 2 W (100 W Peak).
1 3 dB available
2 10 dB available
1 20 dB available
 KDI/EMCO Fixed Attenuators
DC to 18 GHz. SMA connectors.
$2 Shipping
$15.00 ea. Warranty  Merrimac ARM-1 Variable Attenuator
Merrimac model ARM-1 is a DC to 400 MHz variable 0 to 20 dB attenuator. It has a VSWR of 1.3:1 max up to 50 MHz, 1.5:1 up to 200 MHz and 2.0:1 up to 400 MHz. The variable attenuator is screw drive/lock and the connectors are SMA Female. Used-removed from working system. Some are blue/grey color and some are unpainted aluminum.
 Merrimac ABM-31-30 Variable Attenuator
Panel mountable - "Screw Drive". Center frequency 30 MHz,
Frequency range 25.5 - 34.5 MHz. SMA (f/f) connectors.
 Midisco MDC8030-6 6 dB DC to 8 GHz Fixed AttenuatorProvides 6 dB attenuation ±0.30 dB over the entire range of DC to 8.0 GHz. VSWR is 1.15:1 from DC to 4.0 GHz and 1.25:1from 4.0 to 8.0 GHz. Excellent condition.
Midwest Microwave SMA Subminiature "MINIPAD" Attenuators
The Narda 774-3 attenuator was designed to provide maximum operation under conditions of severe shock and vibration. It is bidirectional with a Type N male connector on one end and a female Type N connector on the other end.
 Narda 4768 Series Fixed Attenuators DC to 40 GHzThe Model 4768 Series features an SMA-Compatible 2.9 mm size connector interface that will mate non-destructively with SMA-Type connectors, 3.5 mm and 'K' connectors. This series of attenuators operates from DC through 40 GHz with exceptional flatness and low VSWR across the entire frequency band.
Texscan PA5007 DC-1300 GHz 0 - 125 dB Programmable Step Attenuator
Texscan model PA5007 is a high accuracy, DC to 1300 MHz, BCD programmable step attenuator with a range of 0 to 125 dB, in 1 dB steps, and an impedance of 50 Ohms. It is BCD (10 bit) programmable through a standard 25 pin DB-25 male connector, with an accuracy of 0.2 dB to 1 GHz and 0.3 to 1300 MHz. The activating voltage is 12 Volts. It has SMA(f) connectors; a female DB-25 connector is included. Attenuation Bits (Cells): 1, 2, 4, 8, 10, 20, 20, 20, 20, 20
Insertion Loss: 2.5 dB @ 500 MHz, 3.8 dB @ 1000 MHz, 6.0 dB @ 1300 MHz VSWR (Max): 1.2 @ 500 MHz, 1.3 @ 1000 MHz, 1.5 @ 1300 MHz Current (mA/Bit): 15 Average Power Handling Capability: 0.5 Watt Peak Power Handling Capability: 750 Watt, 3µ sec. pulse Switching Speed: 6 milliseconds
 Weinschel Model 17 DC to 18 GHz 3 dB & 6 dB Attenuator
Average Power: 5 Watts
Peak Power: 1 kW
VSWR: 1.10-1.20 (varies with frequency)
Connectors: 7 mm (APC-7)
$3 Shipping $65.00 ea. Warranty
 Weinschel 41-1-12 10-Watt DC-18 GHz Fixed Attenuator
1 dB Attenuation.
The following description was copied from the 1989 Lucas Weinschel Inc. catalog:
FEATURES:
 Power Capability: Average input power rating is 10 watts. Peak power rating is 1 kW maximum.Wide Temperature Range: -55°C to 125°C. Full rated power to 25°C. Derated linearly to 0 watts at 125°CQuality Connectors: SMA(m,f). Injection molded connector insulators maintain concentricity while permitting up to 10 lbs. of axial force on the center conductor. An all-spring contact arrangement eliminates the use of epoxy or solder.Uniform Phase Characteristics: Excellent phase linearity with frequency, and typical unit-to-unit tracking of ±5°Stability: Low temperature and power coefficients. Lucas Weinschel film resistors are artifically aged to provide high stability under normal as well as extreme operating conditionsNominal Impedance: 50 OhmsFrequency Range: DC to 18.0 GHzNominal value/Deviation from Nominal: 1 dB/±0.5 dBMaximum VSWR:
DC - 8.0 GHz: 1.20
8.0 - 12.4 GHz: 1.30
12.4 - 18.0 GHz: 1.35
 Weinschel 41-2-12 10-Watt DC-18 GHz Fixed Attenuator
2 dB Attenuation.
The following description was copied from the 1989 Lucas Weinschel Inc. catalog:
FEATURES:
Power Capability: Average input power rating is 10 watts. Peak power rating is 1 kW maximum.Wide Temperature Range: -55°C to 125°C. Full rated power to 25°C. Derated linearly to 0 watts at 125°CQuality Connectors: SMA(m,f). Injection molded connector insulators maintain concentricity while permitting up to 10 lbs. of axial force on the center conductor. An all-spring contact arrangement eliminates the use of epoxy or solder.Uniform Phase Characteristics: Excellent phase linearity with frequency, and typical unit-to-unit tracking of ±5°Stability: Low temperature and power coefficients. Lucas Weinschel film resistors are artifically aged to provide high stability under normal as well as extreme operating conditionsNominal Impedance: 50 OhmsFrequency Range: DC to 18.0 GHzNominal value/Deviation from Nominal: 2 dB/±0.5 dBMaximum VSWR:
DC - 8.0 GHz: 1.20
8.0 - 12.4 GHz: 1.30
12.4 - 18.0 GHz: 1.35
 Weinschel 41-3-12 3 DB DC-18 GHz 10 Watt Fixed Attenuator Power Capability - Average input power rating is 10 watts. Peak power rating is 1 kW maximumWide Temperature Range -55°C to 125°C. Full rated power to 25°C. Derated linearly to 0 watts at 125°C.Quality SMA Connectors - injection molded connector insulators maintain concentricity while permitting up to 10 pounds of axial force on the center conductor. An all-spring contact arrangement eliminates the use of epoxy or solder.Uniform Phase Characteristics - Excellent phase linearity with frequency, and typical unit - to unit tracking of ±5°.Rugged Construction - Designed to meet the shock and vibration requirements of MIL-A-3933.Stability - Low temperature and power coefficients. Artifically aged to provide high stability under normal as well as extreme operating conditions.
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HP 8492A DC to 18 GHz 3 dB, 10 dB, 20 dB Attenuators
