Buy on Amazon : http://www.amazon.com/gp/product/B004UM9UL4?tag=catfoodrevi0a-20 <br /> <br />Yaesu ATAS-120A 40 Meter through 70cm Auto Tune Motorized HF/VHF/UHF Antenna For FT-857D FT-450DandFT-897D <br /> <br />For The Following Yaesu Amateur Radio Models - FT-857D FT-991 FT-897D FT-450D FT-450AT FT-450 FT-100D FT-100 FT-857 Only <br />Covers HF thru UHF Self-Tuning motorized Transceiver Mobile Antenna 40 Meters through 450Mhz <br />Designed for mobile automotive use and Requires an Optional Suitable mobile antenna Mount coaxial Cable <br />Has PL-259 PO M style base thread overall length approx 5ft max <br />Motorized trombone section lengthensshortens to tune antenna when Yaesu radios tune button is pressed
