[Elecraft] [K2] How much AF volts at 1kHz to get full RF power using KSB2?

[Jim Brown]

On Mon,10/6/2014 1:56 PM, Don Wilhelm wrote:
> You should find between 200 and 400 mV peak to peak (dependent on the 
> particular speech patterns) from an electret microphone such as the 
> Elecraft MH2.  That is 70 to 140 mV RMS.
> That is sufficient to drive the SSB output to pull power.

I once owned a pair of K2/100s and used them for contesting. I found the 
audio chain rather gain-starved and with excessive low-frequency 
bandwidth, so I changed a few resistor and capacitor values to increase 
the gain and reduce the LF. I think I managed about 6 dB. I believe that 
I passed those mods along to you, Don. The changes allowed me to hit the 
Limiter a bit harder, increasing its compression ratio.

73, Jim K9YC