[Boatanchors] D-104 Replacement Element

[Rob Atkinson]

On Tue, Jun 17, 2014 at 11:07 AM, Richard Knoppow
<1oldlens1 at ix.netcom.com> wrote:

>    All of these have been pretty much replaced by other types of elements
> since the cost of amplification is now insignificant.
>    Most crystal mics were intended to be worked into an "unloaded grid",
> meaning something like a tube amp with a grid leak and input resistance of
> at least a megohm.

You make it sound like a xtal D104 into a 5 or 10 meg grid is ancient
history.  I know lots of phone ops who run D104s like that.

They sound great provided the grid resistor is very high value resistance.

73

Rob
K5UJ