Frequency: 28.3 to 28.5 MHz
Connector: 3/8-24 Thread
Specifically designed for the 28.300MHz - 28.500MHz, 10-meter voice band. Easy-tune 'bare-hands tunable tip', High-performance coil design, Rugged solid-fiberglass core, High power handling After having great success with our tunable tip antenna design, we captured all of the features in our 10-meter antenna. Aside from the ease of tuning, the patented design of our tunable tip broadens the antennas bandwidth to keep SWR lower over more channels. The upper coil extension also increases the power handling capability of the antenna. The TM4 antenna is compatible with autos, trucks, vans, motorcycles and ATV's in a single antenna configuration when metallic ground plane is available. May also be used in dual (co-phased) configuration on any vehicle made from any type of material. Like all transmitting antennas, the TM4 antenna should be fine-tuned (SWR) in their final mounting location. If you have ever tuned a non-tunable tip antenna, you will have a real appreciation for the TM4 antenna. To tune you just pop-of the tip and turn the adjustment screw up or down as needed. The hi-performance loading coil maximizes the transmit/receive functions of your transceiver. The TM4 antenna is 100% American made with 100% American materials. To maintain a balance between flexibility and ruggedness, we use a custom blended, glass fiber reinforced shaft. Each is wound with heavy insulated copper wire to prevent the oxidation and shorted windings often found on non-Firestik antennas. The tunable tip mechanism is made from rust-proof brass and has a rubber o-ring to hold the adjuster in place after tuning. Our 3/8"-24 threaded base has a tapered contact point that works especially well with Firestik mounts and accessories. The tapered "lug-nut" effect transfers stress away from the threads and reduces the possibility of vibration induced loosening of the antenna in its mount. Each antenna is covered with a static reducing, water-tight sleeve containing UV and pigment stabilizers.
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