Posted by
Joe Subich, W4TV-4 on
Oct 04, 2010; 8:05pm
URL: http://elecraft.85.s1.nabble.com/SSB-transmit-audio-Where-s-the-punch-tp5600109p5600660.html
> I need some advice in how to get the same punch my fellow contester
> gets on his FT-1000MP. He claims the K-3 audio will never be as good
> as Yaesu, Kenwood, or ICOM.
That should probably be restated as will never be as dirty as Yaesu,
Kenwood or Icom since the ALC circuits all three radios actually work
by overdriving the final amplifiers BEFORE they start to produce any
ALC action. In effect, their final amplifiers act like an unfiltered
RF clipper.
That said, the K3 is certainly capable of providing significant "punch"
if adjusted properly. With nearly any mic adjust the lower two bands
in the K3 equalizer to the minimum and adjust the top three for the
amount of high frequency boost desired (EQ is before the clipping
function, if I remember correctly so it sets the "balance" of highs
and lows). The HC-4 will need less high frequency boost than an HC-5
which needs less boost than the new HC-6.
Adjust the mic gain until you see 5 to 6 bars of ALC action and then
add compression until you see 10 to 15 dB indicated on the COMP
display (setting between 20 and 30). Control power output with the
power control and adjust TXG VCE for +5. to +1.5 dB to bring the
peak power on SSB (using a pulser) to the same level as peaks on
CW (using CW dots).
For a better understanding of the K3 speech processor see the study
by Jack, W8OZA at:
<
http://cliftonlaboratories.com/elecraft_k3_speech_processing.htm>
73,
... Joe, W4TV
On 10/4/2010 1:41 PM, Dick, WN3R wrote:
> I need some advice in how to get the same punch my fellow contester gets on
> his FT-1000MP. He claims the K-3 audio will never be as good as Yaesu,
> Kenwood, or ICOM.
>
>
>
> Yesterday we spent several hours between ourselves and several European
> stations tuning and testing. I never got a bad audio report, BUT I never
> got a report I had the same PUNCH!!! He reduced power and still overtalked
> me.
>
>
>
> I have tried HC-4, HC-5, and HC-6 using W2IHY eight band EQ with the EQPlus
> with some compression from the K-3.
>
>
>
> I need some ideas before the next contest.
>
>
>
> 73, Dick, WN3R
>
>
>
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