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VK5ZVS |
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| Projects 'n' Stuff |
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| Home | Back |
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| Making a speaker microphone. |
| This project involved the conversion of a retired keypad microphone
into a speaker microphone.
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Here are some of the parts used for this project.
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I removed the bits that were no longer used. This included
the removal of the keypad, pcb, screws and plastic mounts, etc.
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I use the pcb as a template to cut out the shape of
the speaker grille cloth retainer. The flywire I used was the black aluminium variety.
Make sure the orientation of the material is correct before cutting.
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The same is done for the speaker grille cloth. This will be sandwiched
between the front microphone grille and the flywire retainer.
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This photo shows the internal view of the various parts.
Hot melt glue was used to secure the speaker, retainer and speaker grille cloth to the internal
microphone housing. This also adds some additional weight which gives the mike "a nice feel".
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The microphone was reasonably successful. The receive audio level
was sufficient and the microphone clarity on transmit was better than the one it replaced!
Neither suffered from interference with the other.
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