Re: 6-gang FM stereo tuner heads
I have done my first ever phase noise measurement using a low-cost, low phase noise 10MHz OCXO signal source.
With -20dbm carrier, the delta marker for the noise power density (dbm per unit Hz) is -119.43-(-21.41) = -98 at 10kHz offset from the 10MHz carrier which is the same as the manufacturer quote of 98dbc/Hz at 1GHz, 10KHz offset.
The capacitance for BAV99 is about 2pF. Now I am also looking at ISS86 Schottsky diode for UHF TV tuner. It has capacitance of 0.85pF. If I put 4-5 of them in series and have back-to-back anti-parallel strings, it may work OK as limiters for FM broadcast band as a protection for transient voltage surges. I am not sure and have to do some measurement first.
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