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AN677: Designing a Base Station Coil for the HCS410 - Microchip Application
Note Published 7-Aug-98 (app note added 2/06) |
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Field Strength Indicator-Analog only - (circuit schematic added 6/07) |
Field Strength Meter
(Andy Collinson) - This is a wide band signal strength meter circuit which
responds to small changes in RF energy, designed to be used for the VHF spectrum
and will respond to AM or FM modulation or just a plain carrier wave.
...(electronic circuit added 7/03) |
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Field strength meter for the 137 kHz band - (electronic circuit added 4/05) |
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Field Strength Meter MkI - This Field Strength Meter has been specially
designed for our FM bugs. It is capable of detecting very low power transmitters
and will assist enormously in peaking many of our FM transmitters that have a coil
in the output stage that can be adjusted for optimum output...(schematic added
08/08/08) |
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Field Strength Meter MkII - This Field Strength Meter has been specially
designed for our FM bugs. It is capable of detecting very low power transmitters
and will assist enormously in peaking many of our FM transmitters that have a coil
in the output stage that can be adjusted for optimum output...(schematic added
08/08/08) |
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Field-strength meter - I saw this circuit in an old issue of "73 Radio
Electronics". I built it, but it didn't work well, so I changed a few components
to get better sensitivity…..(design idea circuit added 09/08) |
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FSM Field Strength Meter - This is a wide band signal strength meter circuit
which responds to small changes in RF energy, designed to be used for the VHF
spectrum and will respond to AM or FM modulation or just a plain carrier wave.
(added 10/05) |
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RF field strength meter - (electronic circuit added 3/07) |
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RF field strength meter Mk1 - (schematic / circuit added e/07) |
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RF field strength meter Mk2 75MHz to 140MHz - (diagram added 3/07) |
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Simple Field Strength Meter - (electronic circuit added 7/03) |
