Calibration-Standards  +

Bird - The RF Experts
SMK-3000 Series
SMK-3000 Series, RF Calibration Kit
SMK-3000 Series

Wideband, High Power RF Calibration Kit

Precise. Accurate. Dependable.

The SMK calibration kits are precision, high power calibration standards that are used to calibrate RF radios, wattmeters, directional couplers and other high-power RF test equipment in the field or metrology lab. Unlike other calibration solutions, the SMK-3000 calibration kits reduce the cost of ownership and provide a much faster time-to-calibration with lab precision and accuracy you’ve come to expect from Bird.

Covering a frequency range of 1 to 1000 MHz, the in-line calibration kits enable users to calibrate with either 1% or 3% accuracy in just minutes.

Included in the SMK-3000 kit is the Model 4421A Multifunction Power Meter. This intuitive display unit clearly identifies the Forward and Reflected power measurements within the RF path. In addition, return loss readings can also shown to provide additional insight into the RF system being monitored.

  • True average power measurements for analog and digitally modulated signals
  • Forward Power in W or dBm
  • Reflected Power in W or dBm
  • Return Loss in VSWR, RL, or Reflection Coefficient
  • Dual sensor option expands measurement capabilities.
  • Graph of Power Over Time.
  • Low Band Directional Power Sensor
  • Medium Band Directional Power Sensor
  • High Band Directional Power Sensor
  • 4421A Multifunction Power Meter
  • Rugged Carrying Case
  • Latch & Lock Cable


Kit Model # Sensors Included Frequency Range Accuracy Power Range
SMK-3001 (1% Kit) SMK-3001-LB 1 to 10 MHz +/- 1% of reading (2σ) 80 to 107 W
SMK-3001-MB 10 to 100 MHz
SMK-3001-HB 100 to 1000 MHz
SMK-3003 (3% Kit) SMK-3003-LB 1 to 10 MHz +/- 3% of reading (2σ) 1 to 1000 W
SMK-3003-MB 10 to 100 MHz
SMK-3003-HB 100 to 1000 MHz
SMK-3000 Series, RF Calibration Kit
SMK-3000 Series
product specifications:
Item No
SMK-3000 Series
Item Name
RF Calibration Kit
Directivity: 28 dB minimum

Impedance: 50 Ohms

Insertion loss: < 0.05 dB
Insertion VSWR: < 1.05:1
Forward Power Uncertainty*
SMK-3001 series: ± 1% of reading*, 2σ
SMK-3003 series: ± 3% of reading*, 2σ
Calibration plane location: Connector output

Reflected Power Uncertainty*: ± 3% of reading*, 2σ
Calibration plane location: Connector output

VSWR Uncertainty: -27 dB to -10 dB, see Product Selection Guide

(*Measurement conditions: Harmonics < 35 dBc, Load VSWR < 1.1:1, AM modulation < 1%)
RF Input: N(M), Quick Change (QC)
RF Output: N(F), Quick Change (QC)

Display: 1-meter Latch & Lock coiled cable
Operating Humidity: 20% to 50%

Operating Temperature: 19.4 to 26.1 °C (73 ± 6 °F)
Storage Temperature: -20 to 70 °C (-4 ± 158 °F)
Weight (excluding 4421A): 5 lb (2.27 kg)
compatible devices:
Multifunction Power Meter