Heathkit SB-10 Series Troubleshooting Manual page 186

and dip the Final Tune as usual. Once resonance is reached, advance the K2's Power
control until no further increase in plate current is noticed, then back it off a tad.
I found that full output power could be achieved on all 5 bands with between 1 and 2
watts of output from the K2.
The HW-101 exciter input presents an SWR of between 1.2:1 and 3:1 depending on the
band.
If you plan to run SSB with this setup, be sure to check your signal on a scope to ensure
that the amplifier is not being over-driven, as there is no ALC feedback to the K2.
Note that it does not appear that the setting of the MODE switch (CW vs. SSB) has any
effect on the biasing of the final amplifier.
Hot Water for the K2 Page 186