[Yaesu] MD-100 Mic

[Jon Ogden]

The issue is that on the newer rigs, one of the pins on the rig has a
voltage on it that supplies power to the mic to drive the active filters.
They make a big difference in audio quality.  On my FT-1000D, the filtering
does not work as the 1000D doesn't have that voltage pin either.  On my
FT-847 though, things do work and I can adjust the filtering.  It makes a
huge difference.

I suppose you could look at the mic schematic and come up with an adapter to
supply a voltage on that pin.  I've never done it as I use my Heil headset
most of the time.

73,

Jon
NA9D

on 10/30/02 11:40 AM, A10382 at a10382@snet.net wrote:

> Hi Terry,
> 
> I assume you tried the switch on the mic in both settings.
> 
> The in filter on some rigs do not work well with high impedance mics.  Did
> Yaesu specify a different model desk mic for the 840 then say the 847 (for
> which this mic works very well).
> 
> If you're ready to throw out the mic, please send it my way (HiHi).... it's
> actually a very good mic. The same basic mic is sold by Icom - just pinned
> out for the Icom rigs.  best source for wiring info is the 840 user manual,
> which should have all the connector pinouts.  You could also do a 'google'
> search on the mic model number coupled with  'ft-840' - might yield a lot of
> tech notes from other e-boards.


-------------------------------------
Jon Ogden
NA9D (ex: KE9NA)

Life Member: ARRL, NRA
Member:  AMSAT, DXCC

http://www.qsl.net/ke9na

"A life lived in fear is a life half lived."