Manufacturer of precision communication measurement instruments, including SWR/Watt meters and DC power supplies for amateur radio.
NISSEI is a manufacturer known for its high-quality electronics and communication accessories, specifically catering to the amateur radio and professional communications markets. The brand's product portfolio prominently features precision measurement instruments such as SWR/Watt meters (digital and analog cross-needle models) and stable DC power supplies designed to power mobile and base station transceivers.
Models like the DG-503 Digital SWR Meter and the PS30SWI Power Supply are widely used for their reliability and accuracy in monitoring forward power, reflected power, and VSWR. Users rely on NISSEI equipment for ensuring optimal antenna system performance and safe operation of radio measuring devices.
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Since the analog meter movements are sensitive, avoid exposing the device to excessive vibration or mechanical shock to prevent reading inaccuracies.
No, the meter must never be reverse-connected. Always observe the correct connections to the transmitter (TX) and antenna (ANT) as indicated on the rear sockets.
When switched to 'AVG', the meter reads average RF power. When switched to 'PEP' (Peak Envelope Power), it measures the peak power, which is typically used for SSB and AM transmissions.