DX-60B & D-104 Microphone

[Stu Lyon]

Stephen,
Either one should work. The amplifier is mainly an impedance matcher to mate
the high output impedance (Zout) of the mike to the low Zin of
transistorized rigs. Since the D-60 has a high Zin, it will not load down an
unamplified D-104.

I have used both amplified and unamplified D-104s with the SB- rigs which
have similar input stages to the D-60 and they both worked well.

There was an article in QST sometime last year that discussed the effect of
load impedance on low frequency response of the D104. As I recall, for
reasonably low-end roll off, the load should be 200-300K (on an unamplified
mike).

73, Stu W6CUX

----- Original Message -----
From: "Stephen King" <frstephenk at STFRANCISHIGH.ORG>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Wednesday, January 28, 2004 3:18 PM
Subject: DX-60B & D-104 Microphone


> Hello Gang!
>
> I have a question about interfacing (I bet an original DX-60 owner NEVER
> would have thought to say that!) a DX-60B with a D-104 ...
>
> I was looking at my D-104 (never used before) and see that it is one of
the
> models with an amplifier in it ...  Can I connect this to the DX-60B
> directly or should I re-wire it to bypass the amplifier?  Your help is
> greatly appreciated in advance ...
>
> Peace & 73,
>
> Stephen
> W3SMK
>

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