On Sat, 05 Feb 2005 23:57:27 +0100, Brengsek! wrote:

Do I need to use any dropping resistor or make up a network to isolate
it from the sound card input impedance??

I always use a resistor between 5k6 and 15k, but that's merely to
protect the discriminator output from short circuiting during
(un)plugging.

To be precise, I should write that I use a resistor to protect the
receiver's discriminator when the output is short circuited during
(un)plugging.

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