Fact or Fiction
CW vs SSB
FACT or FICTION ?
This Info was obtained from the HF Pack Users Group
Bonnie Crystal KQ6XA, VR2KQ6XA
KQ6XA Rule of Thumb: CW v. SSB Power Effectiveness Comparison
CW -vs- SSB Power Effectiveness Comparison
KQ6XA Rule of Thumb:
5 Watts on CW gets out like 100 Watts SSB.
1 Watt on CW gets out like 20 Watts SSB.
250mW on CW gets out like 5 Watts SSB.
For those who are interested, here is the background
of RF engineering/guestimation/field experience behind
this Rule of Thumb, and the given conditions:
Operators = skilled, talented operators
Language = American English
CW Speed = 15WPM
Bandwidth CW = 1kHz
Bandwidth SSB = 2.7kHz
Signal/Noise Ratio CW = -1dB SNR a Talented CW Ops
Signal/oise Ratio SSB = +12dB SNR a Skilled SSB Ops
5 Watts Power CW = 37dBm
100 Watts Power SSB = 50dBm
Difference = 13dB
Note: Some tricks can be played with CW or SSB to
skew this comparison. Things like bandwidth and
super-operator talent (contest ops), language
(Japanese is 3dB better than American English),
speech compression, morse speed (coherent CW is better),
and types of noise or fading present. For those
wondering about DSP noise reduction... most of the
super-ops who can copy either CW or SSB at abnormally
bad noise levels, don't use DSP noise reduction to do it!
I would love to hear some comments on this comparison
73 de N4LA