The Comet CMX-400 by Comet Co., Ltd. is a VHF/UHF SWR & Power Meter featuring a cross-needle display that shows Forward Power (FWD), Reflected Power (REF) and SWR simultaneously. It includes an AVG/PEP switch for average power or peak envelope power readings, plus meter illumination powered from an external DC source for clear visibility in any setup.

It’s a solid tool for checking antenna/feedline performance and verifying power on VHF/UHF, with minimal insertion loss thanks to its built-in low-loss sensor design.

Full technical specifications

• Type: SWR & Power Meter with cross-needle (FWD / REF / SWR simultaneously)

• Frequency range: 140–525 MHz

• Measurable power (VHF/UHF): 0–200 W

• Power ranges: 30 / 60 / 200 W

• Power readout mode: AVG / PEP switch

• Tolerance: ±10% at full scale

• VSWR range: 1.0 – ∞

• Impedance: 50 Ω (unbalanced)

• Residual VSWR: ≤ 1.2

• Insertion loss: ≤ 0.2 dB

• Minimum power for SWR measurement: ~6 W

• RF connectors: SO-239 (M-J) type (ANT / TR)

• Illumination power: DC 11–15 V, ~250 mA, center-pin positive

• Dimensions: 120 × 80(85) × 105(130) mm (figures in parentheses include protrusions)

• Weight: ~630 g

• Max continuous power: approx. 150 W (140–220 MHz) / 120 W (above 400 MHz)