Wireless Transmitter Power Table

There are plenty of other specs to compare when it comes to wireless transmitters but one of the most significant is looking at the amount of power a transmitter can output while sending a signal to the receiver. Lets compare a few tiers of common wireless units in the sound field: Comtek m-216 IFBs send an audio signal outputting 10mW (milliwatts) of power. Sennheiser G2s use 20mW, G3s: 30mWZaxcom QIFB option of QRX100 (older version) along with some older Lectrosonics units send signals at 50mW. Some of the older and even newer Lectrosonics send signals at 100mW. The most common Lectrosonics transmitters these days are the SMV series. "V" meaning "variable" as in a variable power. The SMQV can send signals at 50mW, or 100mW or even 250mW, which is pretty much only necessary for very long distance in crowds such as the national anthem on the center of a football field at a stadium with tens of thousands of fans with their phones, coaches with their headsets, security with their walkies and officials with their wireless mics. For the record, the Zaxcom TRXLA2 can output variable power of 25, 50, or 125mW. Of course, the more power it outputs, the quicker it drains batteries.

IFB Transmitters:

Comtek M-216: 10mW
Sennheiser EW 300 IEM: 10, 30mW
Shure PSM 300: 10, 20, 30mW (selectable)
Zaxcom QRX100 QIFB option: 50mW
Zaxcom ZaxNet IFB200: 75mW
Zaxcom TRX900Shure PSM 900, Shure PSM 1000: 10, 50, 100mW (selectable)
Lectrosonics IFBT4: 250mW

Body Transmitters:

Sennheiser EW 100 G2: 20mW
Shure FP Series: 10-30mW (varies by region)
Sennheiser EW 100 G3: 30mW
Shure LX Series: 50mW
Zaxcom TRXLT2, Lectrosonics LMb, LMa: 50mW
WisyCom MTP41, MTP40, MTP40 Lite: 10, 50mW (selectable)
Lectrosonics SSM: 25, 50mW (selectable)
Lectrosonics UM400a, UM200, SMd or SMDa, MM: 100mW
Lectrosonics LT: 50, 100mW (selectable)
WisyCom MTP40S: 10, 50, 100mW (selectable)
Zaxcom TRXLA2: 25, 50, 125mW (selectable)
Lectrosonics SMQa: 250mW
Lectrosonics WM, SMV or SMQV: 50, 100, 250mW (selectable)

Plug-On (Boom) Transmitters:

Sennheiser SKP100, SKP3000: 30mW
Sennheiser SKP300: 10, 30mW (selectable)
Lectrosonics HM, UH400a: 100mW
Zaxcom TRX742: 25, 50, 125 mW (selectable)

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