You can't possibly mean -5dBm.
Even if propagation were line of sight, at 200km
distance (near enough between you ?) Free space loss =
32.4+20LOG(f.d) [MHz, km] = 61dB. EIRP max 30dBm so max
power received assuming you antenna were 100% efficient (!!!!) could only
I don't think there can be a propgation mechnism at
these freqs where path loss can be less than line-of-sight. Unlike ducting
on microwave paths.
----- Original Message -----
Sent: Saturday, October 18, 2003 2:58
Subject: LF: 136 khz LF
Band quiet today at my observation times. Did see
G3YXM on QRS very strong signal at -5 dbm and 55 db signal above noise floor.
73 de Mal/G3KEV