1 TV 502 is designed to be used in combination with TS-520 for 144 MHz operation. 2 Operates in the frequency range from 144.0 MHz to 145.7 MHz, or up to 146.0 MHz by installing additional X'tal oscillating elements. 3 Amplification type ALC system is employed. ALC voltage feed back to TS-520 minimizes the distortion caused by overdriving, assuring quality transmission. 4 All-solid-state configuration with FET employed in major circuits. 5 TV 502 provides maximum enjoyment of 144 MHz SSB mobile operation, when connecting TS-520 with DS-1. 6 Enjoyable excellent operation performance of TS-520 on 144 MHz band by connecting to TS-520 7 Receiving Antenna circuit incorporates highly sensitive tuning circuit to minimize Radio interference. 8 Unique, functional design perfectly matches the styling of TS-520 VFO-520 and SP-520 9 With minor modification of wiring, changeover between HF and VHF is effected by simply manipulating the Power Switch of TV 502.