To start with, the 1Ω shunt and 30Ω series resistors were removed to restore the meter movement's original characteristics (10Ω, 5mA FSD).
The enclosure emerged from a scrapped multimeter housing and a sheet of acrylic. It was easy to work on the acrylic for the required cutouts.
All parts were available in the junk box.
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| RF Milliammeter |
The circuit was wired up 'dead-bug' style.
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| RF Milliammeter - Schematic |
The meter was then roughly calibrated to read around 500 RF milliamperes maximum.
Output of a vintage solid state 15W CW/AM/SSB rig was successfully peaked up using this meter.
Related post: Homebrew RF Milliammeter
Related post: Homebrew RF Milliammeter
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