On May 17, 1:02*pm, DEFCON 88 wrote:
Most portables, and even some desktop communication receivers,
have inaccurate S meters.

However S meters don't really measure the actual field intensity that
the receiving antenna is "immersed" in.

They just provide a relative indication of the voltage present at the
antenna input terminals of the receiver -- which is not a field, but a
conducted r-f voltage that depends on the real gain and physical
orientation of the receive antenna, frequency, impedance matching,
cable losses and other factors.