WISCO International

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Plug-in Elements for Convenient RF Signal Sampling Directly from THRULINE Wattmeters.

Coupler and Sampler Elements

Non-Directional Sampler Element

The 4274-025 sampler element is a non-directional coupler that provides an unrectified signal at about -50 dB 2 dB from 25-1000 MHz tapering to -66 dB at 2 MHz. The Model 4274-025 replaces the standard element in Bird wattmeters for applications where mainline power does not exceed 500 W.

  • Sample RF signals for applications in signal leveling, frequency control, wave shape monitoring, etc.
  • Fit the element socket of APM-16, Model 43, and many other cable-type THRULINE wattmeters.
MODEL ELEMENT
TYPE
FREQUENCY
(MHz)
NOMINAL
COUPLING
MAX. MAIN LINE POWER
4274-025 Non-Directional
Sampler
25-1000 -50dB2db
-66dB@2MHz)
500W

Directional Coupler Elements

Directional coupler elements extract a calibrated, attenuated and unrectified signal which is brought out through a female BNC connector on the element face. Rotating the element between 0 and 180 varies the amount of coupling. Minimum attenuation of the main line signal is the nominal coupling 1 dB within the stated frequency band.

The meter movement or display will be inoperative when sampler or coupler elements are installed.

Wide-band, Adjustable RF Coupling Probe with Interchangeable QC Connectors

Model 4275
RF Signal Sampler

Model 4275.The Model 4275 produces an unrectified sample for spectrum analysis, signal observation, frequency counting, etc. Insertion loss is a negligible 0.1 dB, with very low VSWR throughout a broad frequency and attenuation range. The coupling factor is adjustable and lockable. The main power line connectors are QC type.

 

  • For spectrum analysis, signal observation, and frequency counting.
  • Uses QC Connectors for maximum versatil-ity.

Directional Coupler Elements

MODEL ELEMENT
TYPE
FREQUENCY
(MHz)
NOMINAL
COUPLING
MAX. MAIN LINE POWER
400-400 Directional Coupler 400-800 -40 dB 1000W
400-750 Directional Coupler 750-1250 -40 dB 1000W

Specifications

Power Rating: 1 kW max.

Frequency Range: 20-1000 MHz.

Impedance: 50 ohms nominal.

Insertion VSWR (with N connectors): 1.1 max. 2 MHz-512 MHz,
1.25 max. 512 MHz-
1000 MHz.

Insertion Loss: 0.1 dB max. 2 MHz-512 MHz, 0.2 dB max. 512 MHz-1000 MHz.

Coupling: Adjustable within 3 dB from -50 dB to -35dB, 400-1000MHz.

Ambient Temperature Range: -40C to +45C

Connectors: QC type. No connectors required for 4275-100 (sampler accessory for instruments having QC connectors).

Finish: Bright silver plate.

Nominal Size: 2 51/64 "L x  2 7/8" W x 1 1/4" D, (71 mm 5 73 mm 5 32 mm).

Weight: 10 oz. (280 g).

MODEL INCLUDES QUICK-CHANGE (QC) CONNECTORS AS STANDARD:
4275 None. Choose two from available QC Connector types.
4275-020 N Male + N Female
4275-025 N Female + N Female
4275-030 UHF Male + UHF Female
4275-035 UHF Female + UHF Female
4275-100 None required. Use with Bird QC-equipped meter, load, or instrument.
WISCO International, Inc. - MIAMI, FL U.S.A.
Fax: (954) 370-3997 | E-mail: wiscointl@wiscointl.com

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