[Elecraft] Tuning L34 on K2 - The 'Signal to Noise Ratio' method

Ron D'Eau Claire [email protected]
Fri Oct 4 11:29:01 2002


Bert, DL8BDF, brings up a good point bout the L34 adjustment. The manual
does say to tune for best "signal to noise" ratio. 

If  the K2 tuned microwave frequencies, that would be a significant
concern. Up in the VHF region and above we would be doing everything to
improve the S/N ratio, since the internal noise in a receiver up on
those frequencies is what limits the sensitivity - the ability to "hear"
signals down at the noise level.

That's not true on HF, however. Even up on 10 meters it's quite obvious
that at minimum selectivity the noise being picked up by my antenna
completely overwhelms any noise generated within the K2.  So why the
comment about setting L34 for best signal to noise rather than peak
response?

Ron AC7AC
K2 # 1289