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Over Modulation   Message List  
Reply | Forward Message #5055 of 6138 |
Re: Over Modulation

Yes, it's 6RU high, and almost as deep.

In terms of monitoring, it's the best you can get in its class.
I've invested a substantial amount of money in this, and whilst I'm
not looking at making a profit with it, I need to try to cover costs,
so I have been thinking if people are prepared to pay a nominal fee, I
will bring it around, along with a Bird wattmeter, so you can see how
much power you are sending up the coax and what your mod levels are
like - and adjust them if need be.

"The RF doctor does house calls" :D

What do you think?



--- In LPFM_Radio@..., "grantthoms" <studio@...> wrote:
>
> Wow, that's one big unit!
>
> I would certainly be interested, once you come up with a loaner
> solution, to borrow the unit to check I am within spec.
>
> Regards,
> Grant
>
> P.S I've created a new photo album for press clippings. Would be
> interested in seeing other LPFM stations who have been in the news.
>
> --- In LPFM_Radio@..., "wireless.radio"
> <happydayradio@> wrote:
> >
> >
> > Excessive over-mod will splatter any adjacent frequency with ease.
> > Receiver selectivity (more-so lack of it) means that 88.2 is within
> > the "capture" window of 88.3.
> >
> > I have a rough idea of where Fleet transmit from, and it's a
> > reasonable elevation in the scheme of things. This is going to cause
> > problems with anyone transmitting at a lower elevation on an adjacent
> > frequency, whether Fleet are over-modulating or not.
> >
> > Mod levels are the responsibility of each and every operator, and I
> > totally agree that there needs to be some resolve in sorting out the
> > over-mod issue.
> >
> > There are a great many people who feel that radio is a toy and that
> > "getting on the air" is a game to be taken lightly.
> >
> > Far from it. We are fortunate to have the use of parts of the already
> > overcrowded FM spectrum, at little or no cost, and every effort needs
> > to be taken to ensure that we are able to continue to use this.
> >
> > I have recently invested in a QEI FM modulation monitor (see photos
> > section) and I've been thinking about how this could be used for the
> > benefit of everyone who is on the air.
> >
> > If I come up with a plan I'll let you know.
> >
> >
> >
> >
> > --- In LPFM_Radio@..., "bay107fm" <bay107fm@> wrote:
> > >
> > > I have seen a lot of comment about the above subject. LPFM's
(and I'm
> > > one) need to take reponsibility to ensure that this issue is
sorted.
> > > How the RSM has not moved on a number of operators I'm not sure?
> > >
> > > This morning I heard splatter from Fleet FM on 88.2FM. The
> interesting
> > > thing is that Fleet broadcast on 88.3FM and the splatter was in
> Esmond
> > > Road, Takapuna with Fleet operating from the Central City. A
distance
> > > of about 5km?
> > >
> > > When listening on 88.3FM the output was so over the top it was
hardly
> > > audible.
> > >
> > > This will only lead to other stations increasing
modulation/power to
> > > override this splatter and then the RSM will be over everybody.
> > >
> > > It's an issue needing some resolution!
> > >
> > > John
> > > BayFM and The Flea
> > >
> >
>





Fri Feb 2, 2007 1:41 pm

wireless.radio
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Message #5055 of 6138 |
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I have seen a lot of comment about the above subject. LPFM's (and I'm one) need to take reponsibility to ensure that this issue is sorted. How the RSM has not...
bay107fm
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Feb 1, 2007
9:34 am

Excessive over-mod will splatter any adjacent frequency with ease. Receiver selectivity (more-so lack of it) means that 88.2 is within the "capture" window of...
wireless.radio
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Feb 1, 2007
10:16 am

Wow, that's one big unit! I would certainly be interested, once you come up with a loaner solution, to borrow the unit to check I am within spec. Regards, ...
grantthoms
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Feb 2, 2007
11:04 am

Yes, it's 6RU high, and almost as deep. In terms of monitoring, it's the best you can get in its class. I've invested a substantial amount of money in this,...
wireless.radio
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Feb 2, 2007
1:41 pm

Sounds good. I guess it comes down to where in NZ you are located and what the cost would be. Cheers, Grant...
grantthoms
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Feb 3, 2007
11:09 am

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