Handheld radio microphone transmitters, sold either with a capsule fitted, like the Shure BLX2/PG58 and ULXD2 with Nexadyne or KSM8 heads, or as capsule-less bodies such as the Sennheiser SKM100 G4 and EW-D SKM-S, alongside plug-on XLR transmitters like the SKP500 G4 that make any cabled microphone wireless.

Match the band code to your receiver before anything else; the bracketed variant, K3E, K55, S1-7, GBW and so on, has to agree at both ends or the pair simply will not link. Capsule-less bodies suit fleets that standardise on a particular head, since you can carry spare transmitters without duplicating capsules, and any interchangeable-head model can be re-voiced later through the capsules subcategory. The -S suffix on Sennheiser models means a mute switch, worth having for conference work and usually avoided on music stages where an accidental mute costs a vocal line. Plug-on transmitters deserve more attention than they get: clipped onto a favourite wired vocal or reporter mic, they add wireless freedom without changing the sound the engineer has already learned.

Receivers, capsules and charging accessories for all these ranges sit in the neighbouring wireless subcategories.