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Cordless Microphones

From The RadioReference Wiki

Cordless microphones or "wireless microphones" can be found transmitting throughout the RF spectrum, most often in the 70-74 MHz, 170-220 MHz, and 580-800 MHz ranges. Many modern professional wireless microphone systems are frequency agile - that is, tuneable to different frequencies - to find clear channels and avoid interference, with most operating within unused television channels.

Wireless microphone transmit power levels are normally very low, to reduce the potential for interference. Reception thus requires close proximity or use of directional antennas.


NOTE: Operation of wireless microphones in the 698-806 MHz band in the USA is prohibited after June 12, 2010. See the FCC Wireless Microphones page.


Common Frequencies

See 47CFR90.265(b)

  • Bandwidth shall not exceed 54 kHz
  • Output power shall not exceed 50 mW
169.445
169.505
170.245
170.305
171.045
171.105
171.845
171.905

COMTEK Wireless Microphones

 72.1000 ch A
 72.3000 ch B
 72.5000 ch C
 72.7000 ch D
 72.9000 ch E
 73.1000 ch N
 73.3000 ch M
 73.6000 ch K
 75.1000 ch L
 75.5000 ch F
 75.7000 ch G
 75.9000 ch H
 82.5000 ch 6-1
 82.8000 ch 6-3
 83.8000 ch 6-2
 86.8000 ch 6-5
174.8000 ch 7-2
175.2500 ch 7-4
175.6000 ch 7-6
176.4000 ch 7-10
178.2000 ch 7-18
178.6000 ch 7-20
179.2000 ch 7-23
180.8000 ch 8-2
181.2500 ch 8-4
181.6000 ch 8-6
182.4000 ch 8-10
183.2000 ch 8-13
183.4000 ch 8-14
???      ch 8-16
184.2000 ch 8-18
184.6000 ch 8-20
184.8000 ch 8-21
185.2000 ch 8-23
186.8000 ch 9-2
187.6000 ch 9-6
188.4000 ch 9-10
190.2000 ch 9-18
192.8000 ch 10-2
193.2000 ch 10-4
193.6000 ch 10-6
194.4000 ch 10-10
195.2000 ch 10-13
195.4000 ch 10-14
195.8000 ch 10-16
196.2000 ch 10-18
196.6000 ch 10-20
197.4000 ch 10-24
198.7500 ch 11-2
199.6000 ch 11-6
200.4000 ch 11-10
202.2000 ch 11-18
202.6500 ch 11-20
204.8000 ch 12-2
205.6000 ch 12-6
206.3500  ?
206.4000 ch 12-10
208.2000 ch 12-18
208.6500 ch 12-20
210.8000 ch 13-2
211.6000 ch 13-6
212.4000 ch 13-10

Manufacturer links

Frequency lists for many models of wireless microphones can be found on the manufacturer's websites. Some manufacturers may just sell a rebadged model made by someone else. A partial list of manufacturers includes:



Return to Wiki page: Common Frequencies