[Elecraft] Dynamic Mics on K3

[Jim Brown]

On Wed, 11 Feb 2009 14:02:29 -0500, Paul Christensen wrote:

>Jim's settings look good for standard bandwidth SSB.  For the K3's ESSB 
>mode, I would rein-in on the EQ extremes, and try a cut at 200Hz.  The 
>50-100Hz bands can be flat or even boosted slightly, depending on the 
>response of the mic. At the high end, I would back off on the 3.2K setting 
>to no more than +5-6 dB, again depending on the mic's response.  Results 
>will vary, but that's a good place to start with a dynamic mic.

I agree with Paul that for ESSB, less equalization is appropriate. I would, 
however, still apply steep low cut at 50 Hz and 100 Hz to any pro mic, 
simply because there's no useful speech content in those bands, but most 
mics will produce popping and other breathe noise in that spectrum, and 
most shacks will have a lot of acoustic noise in that spectrum. 

All single-D mics (virtually all popular handheld vocal mics) suffer from 
proximity effect, so some low cut is also needed for the 200 Hz octave band 
with these mics. 

As to high frequency EQ -- this EQ compensates for the rolloff produced by 
the TX filter and the RX filter, so if you're transmitting through a wide 
filter, I would not use that EQ. 

That said, I consider ESSB to be quite wasteful of the limited spectrum 
available to hams. It's fine to use it when there's little activity on the 
bands, but those who are selfish enough to use it on a crowded band make me 
want to build and fire up an arc transmitter. 

73,

Jim Brown K9YC