Nissei TX-502 Tos-meter Wattmeter Cross-Needle 1.6-525 MHz 200W

The Nissei TX-502 is a high-precision wattmeter and SWR meter essential for any modern radio station, whether amateur or professional. Thanks to its wide coverage spectrum from 1.6 to 525 MHz, it lets you check your equipment on the HF, VHF and UHF bands with a single, compact, high-performance device.

Highlights

• Instant readout: cross-needle system allows SWR and power readout without prior calibration.
• High Sensitivity: Accurate detection from 1W input power, ideal for QRP modes or fine tuning.
• Linear Accuracy: Use of low-polarization Schottky diodes guarantees excellent measurement linearity.
• Static Protection: DC-Grounded connectors protect your installation against electrostatic charge build-up.
• Optimal readability: Large backlit display with tricolor scale for clear distinction of SWR danger zones.

Technical specifications

• Frequency range: 1.6 - 525 MHz
• Power ranges: 2W / 20W / 200W
• Minimum power for SWR measurement: 1W
• Accuracy: ± 10% of full scale
• Insertion loss: Less than 1.2:1 (0.1 dB to 0.2 dB depending on frequency)
• Impedance: 50 Ohms
• Connections: UHF-Female (SO-239)
• Dimensions: 184 x 118 x 131 mm
• Weight: Approx. 950g
• Backlight power supply: 13.8V DC

Compatibility

• Ham radio transceivers (HF, 6m, 2m, 70cm)
• CB radios (27 MHz)
• VHF marine and PMR professional radio equipment
• Antennas with PL-259 connectors
• Power amplifiers up to 200W PEP

FAQ

Why choose the Nissei TX-502?

• Extreme versatility: One device covers all common radio bands from 1.6 to 525 MHz.
• Build quality: Durable metal casing designed to last and minimize RF interference.
• Quality/price ratio: Performance close to professional models for a controlled budget.
• Elegant design: Its gray front panel and clear display blend perfectly into any radio shack.