"Telamon" wrote in message
...
In article .com,
"john" wrote:
Telamon wrote:
In article ,
BDK wrote:
In article m,
says...
David wrote:
On Fri, 05 Jan 2007 02:17:32 GMT, Telamon
wrote:
In article
s.com,
"john" wrote:
An exception would be radios that have a signal strength meter
in
dBm,
which is an absolute scale.
Millivolts?
actually the palstar and the drake scales are in Decibels, while
the
kenwoods scale is in Db at the top and millivolts at the bottom.
also
before anyone asks my rf gain is fully clockwise on both the drake
and
kenwood. the palstar doesn't have a rf gain control.
You can't even be sure identical radios will have the same S-Meter
readings, in most cases. The reading is pretty meaningless, except to
compare antennas, or if a preselector is used, to adjust for max
reading.
Nonsense.
--
Telamon
Ventura, California
so a stronger s-meter reading on one radio indicates the more sensitive
radio? in this case the kenwood?
It could. Like I posted earlier the readings would be comparable if the
radio has an absolute scale such as dBm instead of a relative scale.
--
Telamon
Ventura, California
If the radio has a meter that is calibrated in dBm, it should have identical
readings with another radio that has a meter calibrated in this manner.
But.....................it is possible that one of the radios can hear weak
signals better. Most of the radios that have an S-Meter calibrated in dBm
are millitary radios that are built to a certain spec. True, there may be
some differences in perceived signal quality, but generally, you can take a
Rockwell HF-2050, HF-8000 series, a Harris RF-590, Racal 6790, a WJ 8718,
and they will all sound very similar. The design spec is going to call for a
certain amount of gain, overload rejection etc. If the receiver doesn't meet
these specs, the manufacturer can lose the contract.
Pete