BSRF PM-1 Power Meter / Coax Cable Tester

The BSRF PM-1, a broadband RF power meter and coax cable tester, measures transmitter power and coaxial cable loss from 10 MHz to 1000 MHz.

It reads power directly from 33 dBm (2 W) down to -20 dBm (0.01 mW) and shows the result in mW or dBm. A measure mode setting covers CW, QPSK, and pulse FM signals, so it also reads digital wireless transmitters.

To test a cable, pair the PM-1 with an RF source such as an IEM or a pocket transmitter and read the insertion loss. Relative mode also measures the loss through filters and splitters and the gain of active devices.

A positive or negative offset lets you measure more power with an external attenuator or less power with an external amplifier, and a directional coupler lets you watch the power of a critical transmitter. The dual alarm responds to power above or below a threshold, and its open-collector output can add a warning or switch an amplifier. A 9 V battery powers the PM-1, which has a light, rugged aluminum enclosure.

Features

• 10-1000 MHz bandwidth
• Direct power readings from 33 dBm (2 W) down to -20 dBm (0.01 mW)
• Displays power in mW or dBm
• Measure modes for CW, QPSK, and pulse FM signals
• Relative mode for cable loss and the gain of active devices
• Offset for an external attenuator or amplifier
• Dual threshold alarm with an open-collector output
• 9 V battery power
• Aluminum enclosure with a BNC connector