In a message dated 96-03-29 05:36:32 EST, you write:
>Let's get a bit of perspective on this "5kW is shocking" strand. It's easy
>to forget that the differency between 1.5kW and 5kW is less than an S-point.
>Those contest stations which some people find so offensive, booming in at
>S9+40dB with their 5kW, would only drop to S9+20 if they switched the PA off
>and ran a barefoot 50W.
While what you say would be true IF S meters used a six dB per S unit
standard, they don't. That "standard" is not now, and never was a standard.
It was something one manufacturer tried to use after WW2 and then later
abandoned!
Going from 1.5 kW to 5 kW is, in reality, almost two S units!
Most S meters are 3-4 dB per S unit. Check out the alignment section of any
modern transceiver, and you'll see this is correct. Perfectly aligned, nearly
every radio falls between 3-4 dB per S unit. A few radios are also
intentionally mis-calibrated on the dB scale!
When testing an antenna, remember the actual difference is often half what
that lying excuse of a meter says!
73 Tom
>From Spike Lazar <slazar19@sgi.net> Fri Mar 29 15:35:11 1996
From: Spike Lazar <slazar19@sgi.net> (Spike Lazar)
Subject: More Power
Message-ID: <199603291535.KAA04377@orion.bv.sgi.net>
At 10:20 AM 3/29/96 GMT, you wrote:
>It's easy to forget that the differency between 1.5kW and 5kW is less
>than an S-point. It's NOT the same as pitting a 150bhp Euro sedan against
>a 500bhp Callaway 'Vette. Log, not linear.
>It's better tx lines and better antennas really make the difference.
>73 Al, GM4BAP
Dear Al,
I'll agree with you about the tx lines and antenna really do make a
difference. You have to consider the Super Qro more than likely has
gone to a reasonable effort in that area and now is has added Eimac
antennas.
Please do not dismiss a db so insignificantly, for each additional db
on receive (mostly) and transmit you increase your qso total 5%!
If all things being equal, if you reverse the db equation to compare your
Q totals with a competitor who has beaten you, you can see exactly how
many db down your signal is overall. (The winner of a contest ultimately
is the station who hears the most, figuring everyone can hear you and you
run out of stations to work.)
Also a word to all from my buddy Dr. Bafoofnik: Please do not work any M0oo
stations during the WPX unless you want to die a horrible death from
this deadly cattle brain disease.
Spike, W9XR
>From Micheal Ihry <mihry@topher.net> Sat Mar 30 06:16:03 1996
From: Micheal Ihry <mihry@topher.net> (Micheal Ihry)
Subject: ms ac5ct
Message-ID: <01BB1DBD.6D918B60@ppp16.topher.net>
hi all
will try ms this time in wpx.
cu in the test
de ac5ct..mike in tx
>From Micheal Ihry <mihry@topher.net> Sat Mar 30 06:14:01 1996
From: Micheal Ihry <mihry@topher.net> (Micheal Ihry)
Subject: need xformer
Message-ID: <01BB1DBD.6AFB5020@ppp16.topher.net>
hi all
just about had my homebrew amp runnin when the xformer burned.
need another. 120/220 in and about 2880 out.
plse e-mail me direct if u can help.
tnx
de ac5ct..mike in tx
>From Micheal Ihry <mihry@topher.net> Sat Mar 30 06:20:27 1996
From: Micheal Ihry <mihry@topher.net> (Micheal Ihry)
Subject: need addresses
Message-ID: <01BB1DBE.07148E40@ppp14.topher.net>
hi all
need e-mail addresses for wl7bqm, wl7hp, and kl7cc
tnx
de ac5ct..mike in tx
|