The Shure 590T was discontinued in 2010. The 590T served as a handheld universal replacement microphone for more than 40 different two-way radios sets. Shure did not develop an exact replacement, but there are a couple of options available.
Considerations
The most sought-after features of the 590T included the built-in amplifier and the frequency response from 200 to 4,000 Hz. Another highly prized feature was the modular plug cord. This plug allowed the cord to be easily changed. The 590T offered a leaf-type switch that was built to handle rough and continuous use.
Shure 514B
The Shure 514B was designed for paging and public address systems. Although very similar to the 590T, the differences should be noted. It has a wider frequency response, 100 to 6,000 Hz. Also, in order to perform similarly to the 590T, an external microphone preamp is required. Finally, the modular plug cord is not available on the 514B.
Shure 527C
Another similar microphone is the 527C. The 527C has a built-in amplifier that supports its use in a variety of situations. The frequency response is 300 to 5,000 Hz. Also, the 527C offers a similar leaf-type switch.
Tags: frequency response, 514B Shure, built-in amplifier, frequency response Also, leaf-type switch, modular plug