Firestik 2M15S-B 17" (43cm) 2M15 Series 2-Meter 1/4 Wave Tunable-Tip Amateur Antenna w/ Spring

Firestik 2M15S-B 17" (43cm) 2M15 Series 2-Meter 1/4 Wave Tunable-Tip Amateur Antenna w/ Spring"2M15" series, 2 meter amateur antennas are little quarter wave wonders. By using top quality materials, proven antenna knowledge and our patented tunable tip design, we built a pair of dependable antennas you can count on for your day to day communications. Both the 2M15 B and the 2M15S B are 100% American made with 100% American materials. The core material is solid 3 8" (9. 5cm) fiber rich, custom blended, fiberglass. Each is hand wound with double

"2M15" series, 2 meter amateur antennas are little quarter wave wonders. By using top quality materials, proven antenna knowledge and our patented tunable tip design, we built a pair of dependable antennas you can count on for your day to day communications. Both the 2M15-B and the 2M15S-B are 100% American made with 100% American materials. The core material is solid 3/8" (9.5cm) fiber-rich, custom blended, fiberglass. Each is hand wound with double insulated 19 gauge copper wire. Our 3/8"-24 threaded base will fit all common mounts and accessories. Both antennas are covered with a static reducing, water-tight sleeve containing UV and pigment stabilizers. A vinyl cap is provided to protect the tuning mechanism from the elements.

Like all transmitting antennas, these antennas work best when mounted over sufficient ground plane. The versitility of the tuning screw design offers a wide tuning range. The lowest frequency is achieved by having the tuning screw in its highest lockable position and the vinyl cap installed. Likewise, the highest frequency of the antenna can be found with both the vinyl cap and tuning mechanism removed. During design testing we were able to achieve resonance from 135-168MHz without exceeding our maximum threshhold SWR of 2.0:1. In the 144-148MHz band sub 1.5:1 SWR was easily achieved.

The 2M15-B should be selected when the user has no need for the added protection from a spring. However, for roof mounts and others that place the antenna in a location whereas physical contact with immovable ojects is probable, the 2M15S-B would be the proper choice. The 2M15S antenna production length is factory adjusted to compensate for the included stainless steel spring.