[AMRadio] Bandwidth

[John Coleman]

Well, 30 DB down from 1500 is 1.5 watts.  There is a lot of difference
between 30 and 60 DB.  I don't think I remember reading any suggested
skirt step or anything like that.  I wonder if these folks have got a
clue?

John, WA5BXO

-----Original Message-----
From: amradio-admin at mailman.qth.net
[mailto:amradio-admin at mailman.qth.net] On Behalf Of Geoff/W5OMR
Sent: Sunday, July 20, 2003 9:29 PM
To: amradio at mailman.qth.net
Subject: Re: [AMRadio] Bandwidth


> By the Way, just how many DB down from 1500 Watts do they want
> the unwanted sideband energy?

30 to 60db down from the fundamental.  At least what's what the spurs
have
to be reduced by.  I just read that in the RFI section on the Awful
Racket
Raising
League's website.  (www.arrl.net)

> There is no such thing as "no energy" in
> any spectrum!  I remember when Otis K5SWK was tuning an antenna using
a
> grid dip meter and accidentally left it on.  It caused complaints
later
> in the night when the 75 meter band opened up, from some fellows in
> another state.  That had to be less than 1 watt.  I have never seen
one
> capable of even putting a glimmer on a #47 bulb.


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