Hi Michael,

The guys are right so far.  If I remember rightly, triple the power makes an
S unit difference although it seems people will often report a greater
difference in going from say 100 watts to 600 or 700 watts.  This may be due
in part to lack of S meter linearity and partially to the difference in what
the ear detects.

On your second question I think you would effectively double the power for
PEP so 400 continuous would equate to 800 PEP.

I hope that helps and I hope I'm right.  <GRIN>  Take care and very 73.

Kevin Nathan, Independent Living Coordinator
Dept. of Services for the Blind
3411 S. Alaska
Seattle, Wa 98118
Voice:  (206) 721-6450
Cell:  (206) 604-4767
Toll Free:  (800) 552-7103
Fax:  (206) 721-6403
Email:  [log in to unmask]



-----Original Message-----
From: Michael Ryan [mailto:[log in to unmask]]
Sent: Friday, August 29, 2003 07:05 AM
To: [log in to unmask]
Subject:


Hi all:

Is there a rule of thumb that can be used?
IE:  you have a perfectly resonant antenna with 100W out.  What power is
needed to get an improvement on the signal strength?  Will 200W make much
difference or to receive an actual increase in signal strength, a power
gain of lets say, 500W is required? Will a power output of 800/KW give much
improvements to a 500W signal strength?  Also, If you have an amp rated at
400W continuous or digital mode,  what would the PEP SSB rating be?

Thanks to all & 73:
Michael VO1RYN