Check the listing for details. TELEWAVE T4560 UHF 100 Watt Dual Circulator Isolator GMRS 406-512 Mhz Loads LPF. Condition: New – Open box, Made in United States. Listed at 349.00 USD. One (New off shelf) Telewave T4560 Dual Isolator Circulator for intermod suppression and Transmitter protection. Includes loads and low pass filter. LPF and Isolator are tuned for GMRS. Tested tuned to 462.6 Mhz for use on any GMRS 462 Mhz repeater frequency. Images are of the actual unit for sale. Mint New Condition! Shipping to the Continental USA Only.One (New off shelf) Telewave T4560 Dual Isolator Circulator for intermod suppression and Transmitter protection. Includes loads and low pass filter. LPF and Isolator are tuned for GMRS. Tested tuned to 462.6 Mhz for use on any GMRS 462 Mhz repeater frequency. Images are of the actual unit for sale. Mint New Condition! Shipping to the Continental USA Only.