The dense signal environment in which radio communication systems work becomes even more challenging with the shift to higher capacity links needing wider bandwidth in which to operate. Signal spreading caused by intermodulation in the transmitter and receiver requires either extremely linear devices or suitable filtering to avoid interference. One such environment is that experienced by tactical communication systems operating in the 200-450MHz frequency range. Radios operating in this band can generate harmonics, broadband noise and intermodulation distortion that could interfere with other systems at adjacent frequencies. Transmit filtering is used to mitigate these effects, but the number of possible channels and the passband width of each requires a tunable filter to meet the flexibility required. Teledyne Defence produces tunable filters across a range of applications and frequency ranges for such applications. Download the full white paper for more information.