The MFJ-204B antenna bridge lets you quickly analyze and optimize your antenna for peak performance. Your antenna coax lead connects directly to this unique antenna bridge (SO-239). No other equipment needed. Take it to your antenna site. Determine if your antenna is too long, or too short, measure its resonance frequency and antenna resistance to 500 ohms. It is the easiest and most convenient way to determine antenna performance. Built-in resistance bridge, null meter, tunable oscillator-driver (1.8-30 MHz). 2 x 4 x 2 inches.
This meter uses a 9 volt battery (not supplied)or for operation from 110 VAC, order the optional MFJ-1312 AC adapter.