• ASTATIC 600 - The heavy duty Astatic 600 SWR/ Power/Modulation meter features a full 5000 watts.  3 separate easy- to-read meters for simultaneous examining of all functions for mobile, bench or base station installation. The meter's lighted face also adds to it's readability.

   
• 5000 Watt
• SWR/PWR/MOD Meters 
• 3 Separate View Meters
• 25-30 MHz Frequency Range
• 50 Ohms Impedance
• Earphone Jack
• Mini Earphone Included
• Size - 9 3/4"W x 4 1/4" D x 4 1/4" H
• SWR accuracy 10%
• RF accuracy 7%
• Power accuracy 10%

Here is an excellent link on how to use your SWR Meter correctly at FireStik.com