TBSWR-200K500

The Tekbox TBSWR-200K500 is a high-power VSWR (Voltage Standing Wave Ratio) bridge designed for forward and reverse RF power measurement in EMC immunity test setups (with BCI probes) and other high-power HF/VHF applications. It combines the wide frequency range and directivity of a directional bridge with the low insertion loss and robust power handling typical of a directional coupler, enabling accurate and reliable inline RF power measurements.

Key capabilities and advantages

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Designed for forward and reverse power measurement in RF tests and EMC immunity setups.
Wide frequency range covering 200 kHz to 500 MHz for versatile HF/VHF applications.
High directivity for accurate separation of forward and reflected signals.
Low insertion loss across the frequency range much lower than typical VSWR bridges.
Solid power handling capability, suitable for demanding RF setups.
Compact design with N-female through ports and SMA-female coupling ports for easy integration into RF measurement systems.
Ideal for HF/VHF test benches, EMC compliance labs, and general RF diagnostics.

Technical specifications and parameters

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Characterized frequency range	200 kHz – 500 MHz
Directivity	200 kHz – 500 MHz (> 20 dB) / 800 kHz – 50 MHz (> 30 dB)
Coupling	200 kHz – 300 MHz (-40 dB ± 0.3 dB) /300 MHz – 500 MHz (-40 dB ± 1 dB)
Insertion loss	200 kHz – 200 MHz (< 0.3 dB) /200 MHz – 500 MHz (< 0.7 dB)
Max. power	200 kHz – 200 MHz 100 W CW ) /200 MHz – 500 MHz 70 W CW )
Short time (max. 1 minute)	150 W Output shorted or open: max. 35 W
Operating temperature range	– 20 °C to + 40 °C
Impedance	50 Ω
Port matching	> 20 dB
RF connectors, through ports	N-female
RF connectors, coupling ports	SMA-female
Dimensions	113 mm x 60 mm x 35 mm
Weight	290 g