Collinear phased 5/8-wave elements with special filtering sleeve to suppress intermodulation interference.
If you boat near busy seaports, in harbors or just offshore of major cites and are troubled with annoying squawks and squeals erupting from your VHF radio, the 5226-FLT is for you.  Using Shakespeare’s revolutionary filter technology, the 5226-FLT marine VHF radio antenna provides all the performance of the award-winning, flagship Galaxy® 5225-XT, plus it can significantly reduce annoying Out-of-Band and Intermod Interference caused by pagers, land mobile radios and other signals near the marine VHF radio band.  And, it does this with virtually no effect on transmit range.  The 5226-FLT antenna features the extra tough Galaxy® fiberglass with its black, high-gloss polyurethane finish.  Maximum range and quality in a great looking antenna.

Brass and copper elements to maximize range and efficiency
Stainless steel ferrule with standard 1"-14 thread
Exclusive Shakespeare Galaxy® Black finish
Includes 20' RG-8/X cable and a PL-259 connector
Suggested mount: Style 4187 stainless steel ratchet mount
One section
Shakespeare Limited Warranty:  5 years
 
Specifications:
Max. Power Input: 30 watts
SWR: nominally 1.5:1 at 156.8 MHz
Bandwidth: 3 MHz within 2.0:1 VSWR
Frequency: VHF Marine Band
Filter Loss: less than 0.25dB
DC Grounding: Yes - see below
Polarization: Vertical
Impedance: 50 ohms