[Boatanchors] Band Width

[Gary Schafer]

Hi Jim,

Long time no talk.  I agree with you that bandwidth rules are not needed and
would be very hard to measure or enforce.

If any rule were to be made it should be one of signal distortion. That is
the problem of most wide signals on the band. Part of it is the extremely
poor transmitter inter modulation performance of the radios being produced
these days. The other part of it is the mike gain control of the radios
being turned up to high and watching the meters dance.
This makes signals wider and dirtier than any wider audio bandwidth of a
clean transmitter.
It is surprising how little energy there is at higher audio frequencies of a
properly modulated SSB transmitter or AM transmitter even if they are "hifi"
operation. 
I would much rather listen to one of those stations than most of the
overdriven rigs usually heard.

No bandwidth rules are not needed and would be a detriment to
experimentation of future modes for us.

If any rules were to be implemented I wouldn't mind seeing manufacturers
forced to supply transmitters with half decent intermod capability. It is
just short of horrible what is on the market now.
The ARRL doesn't help either with the way they propagate the way intermod
specs to be rated.

If the official observers want to help, please tell people to turn down
their audio gain and explain to them why.

73
Gary  k4FMX




> -----Original Message-----
> From: Boatanchors [mailto:boatanchors-bounces at mailman.qth.net] On Behalf
> Of Jim Wilhite
> Sent: Sunday, December 21, 2014 9:30 PM
> Cc: boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] Band Width
> 
> As I recall there was an attempt, or at least, discussion of writing
> rules
> to do exactly what you described Sandy.  However, it met with a lot of
> resistance over the ability of amateurs to actually understand how to
> measure the bandwidth accurately, by a lot of AM operators and the Hi Fi
> SSB
> operators.  They used a case in point, the measurement of Peak Power.
> Today
> the great majority do not understand how to measure it nor exactly what
> the
> rule meaning is.
> 
> We all know the intent of the rule but, like splatter, it is not clearly
> understood.  Another case in point is the operation near the band edge.
> I
> regularly hear stations who are so close to the edge that products of
> their
> signal is out of band, a no, no in decades past.  I was, and am today,
> against a very restrictive bandwidth rule because of the lack of
> knowledge
> on the part of my peers.   AM operators were against it due to the
> proposal
> of ~ 5 KC max which would have been a grandfather clause rather included
> in
> the proposed rule.  There are a great number of hams whose bandwidth far
> exceeds what is necessary for AM operation, not to mention those who
> over
> modulate and cause buckshot and splatter.
> 
> What is needed is hams who understand the properties of a technically
> good
> signal and the desire to emit such.
> 
> 73
> 
> Jim
> W5JO
> 
> 
> 
> -----Original Message-----
> 
> As an ARRL "Official Observer" I am alarmed.  But what to do now as the
> bandwidth requirements are so vaguely referred to by Part 97!!  This
> leaves us in a quandry.  Should the "League" pressure the Commission to
> rewrite part 97 and be more specific as should have been done from the
> beginning?  Frequency tolerance and bandwidths have gotten more and more
> "precise" since we old timers were using vacuum tube equipment!  Is
> there and aid to possibly having FCC monitoring stations like there used
> to be?  Maybe the budget will not permit it?  This needs to be attended
> to before it gets completely "out of hand" and will be very hard to
> implement in the future?
> 
> 73 to all,
> 
> 
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