| Brand | Linear |
|---|
Check the listing for details. Linear FT-1 RF Field Tester LDR00001 Freq: 318. Condition: Open box. Listed at 50.00 USD. Manufacturer's Part Number LDR00001. Ambient RF noise or possible interference can be monitored. A steady hissing noise is normally heard. This is the background noise of the radio. Any steady pulsing, low frequency buzzing or even voice traffic indicates an interfering signal that may reduce the maximum range of the system.