[Elecraft] Voice is clipped K3s

Joe Subich, W4TV lists at subich.com
Wed Oct 10 14:07:21 EDT 2018


If one has a flat "wide band" mic (electret) the typical TX EQ settings
needed to emulate the Heil HC4 (DX)/HC5 elements, a couple classic
"communications" mics and a typical dynamic "vocal" mic (SM58) are:

                                   -- SHURE --
            HC4     HC5    D-104   444    SM58
    50      -16     -16     -16    -16      -8
   100      -16     -16     -10    -16      -2
   200      -16      -3      -4     -7       0
   400       -4      -2      -3     -2      -1
   800       -0      -2      -1      0      -1
  1600       +5      +2      +3     +3      +0
  2400      +10      +5      +9     +7      +1
  3200      +10      +6     +13    +12      +4

Thanks to: <https://owenduffy.net/audio/legend/index.htm> for the
HC4/HC5/D-104/444 response curves.   The SM58 data comes from
Shure's data sheet.

73,

    ... Joe, W4TV


On 2018-10-10 11:29 AM, Don Wilhelm wrote:
> 
> As Bob K4TAX has pointed out and K9YC has long advocated, set the lower 
> 2 bands of TX EQ to the lowest levels and set the 3rd band down a bit as 
> well - that will increase your "talk power" while not wasting power 
> trying to transmit those low frequencies which are not needed for 
> intelligibility.  If you are into ESSB, you may differ, but ham radio is 
> not HI-FI in my opinion, it is about communications effectiveness.
> 

The typical


More information about the Elecraft mailing list