Microphone Impedance for Amateur Radio
From Free Knowledge Base- The DUCK Project: information for everyone
Older vacuum tube ham radio transceivers tend to use the high impedance microphone whilst the newer solid state ham radio transceivers tend to use the low impedance microphone. Mobile radios tend to use low the impedance microphone. Slang terms such as Hi-Z and Low-Z come from the music industry and refer to impedance. A Hi-Z microphone is, for example, a high impedance microphone.
- What is considered high impedance?
- How many ohms is a typical vacuum tube hi-Z microphone?
- What about low-Z?
- How about those microphones with the old crystal element, are they not "really" high impedance?
- How about the low-Z microphones which have a 9v battery under the base?
- Can the impedance of the microphone be checked with an ohm meter?
All good questions and each shall be addressed here.
