Field strenght meter with Attenuator up to 200 Mhz

The RF field meter unit will be in great help to tune transmitters for best performances. You can measure the radiated energy field and can easy tune the system for max output field strength (maximum power).

RF Field Strength Schematic
This field strength meter with selectable attenuator. You can used it for measuring the antenna gain and pattern, compare different magnetic field strength. See the following RF field strength meter schematic.

RF Field Strength Features:

• Input Terminal: SO-239 (M type) or BNC
• Output Display: Analog power meter modify from a 50uA current meter and after calibrate with a RF generator.
• Measuring Range: From +3dBm to -35dBm with attenuator. (0dBm = 1mW at 50ohms)
• Operating Frequency: 100kHz to 200MHz
• Power Source: No need.
• Attenuator Range : With 6 ranges (0dB, 3dB, 6dB, 9db, 12dB, 15dB)

Source: frtransmiter.blogspot.com
Field strength meter with attenuator