[BC] KKGM

Tue Jul 19 01:07:03 CDT 2005

Doesn't really matter...

The news is that my wife and I bought a Computer Tots/Computer Explorer's
franchise (www.computertots.com). We have pretty much all of Rhode Island as
our territory.

Basically, she got sick of her job (social work) and I got sick of radio so
after much research we signed with these guys. I'm planning to keep my toe in
the water so to speak, but not having to depend on broadcast engineering to
earn a living will probably make it more enjoyable.
I'm only going to work for long time friends...by the hour.

In my last FT job, there was so much work and so many bosses that at the end
of the day not only was I physically burnt but mentally too. After a while I
realized that there was no pride at that job. It's tough to get psyched when
all you're doing is fixing printers, removing viruii from computers and
putting out fires at 7 stations, for a company that refuses to do anything the
right way - only the quick, cheap way (And loves to blame YOU when their
cheapness burns them!)!

I just came back from the yearly convention this company has in Las Vegas. It
was a joy to hear all the stories that people had about how they KNOW their
work makes a difference to children. 

I used to think that working in radio made a difference. I don't any more.

-D

------ Original Message ------
Received: Mon, 18 Jul 2005 08:52:44 PM PDT
From: "Bill Honigs" <bhonigs at wb20.com>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Subject: RE: [BC] KKGM

I am sure you did not want that published...

Bill H. 

-----Original Message-----
From: broadcast-bounces at radiolists.net
[mailto:broadcast-bounces at radiolists.net] On Behalf Of DANA PUOPOLO
Sent: Monday, July 18, 2005 8:03 PM
To: Broadcast Radio Mailing List
Subject: Re: [BC] KKGM

Craig,

Just a quick note to let you know that I'm moving (back) to Providence next
month.

My address will be: 266 President ave.

Local phone number will be 410-454-1394.

Dana

------ Original Message ------
Received: Mon, 18 Jul 2005 07:31:56 PM PDT
From: "Craig Healy" <craig.healy at chowdanet.com>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Subject: Re: [BC] KKGM

> Dan Strassberg wrote:
> 2. Is there a practical way to electrically shorten such a radiator? 
> For example, can you attach a skirt to the bottom and drive it so that 
> the skirted section (in this case something between about 40 degrees 
> and 100
> degrees) does not radiate?
>
> I've been trying for several years now to find someone who can comment 
> on electrically shortening AM towers that are too tall for a diplexed 
> station operating at a frequency higher than that of the station that 
> originally occupied the tower. KKGM is now the second case I've heard 
> of of a tall tower that proved to be too tall and provided very poor 
> efficiency. The other, in central New York State, did not, AFAIK, even 
> meet Class C
minimum
> efficiency (241 mV/m/kW @ 1 km) and defied the ministrations of 
> several well-known consultants. I don't know whether it is yet working 
> as the original consultant intended.

WNBH in New Bedford, MA has a tower about 3/4 wave at 1340.  Has a six-bay FM
on top which probably provides a bit of top loading to boot.  What they did
was put a skirt on top connected to the tower below the FM bays and going down
somewhat less than 1/4 wave and insulated there.  That end is connected to a
motor-driven vacuum variable capacitor between the skirt and the tower proper.
The control is at the base.  There's also a sample loop in the skirt section. 
What is done is the capacitor is tuned to minimum field on the sample loop. 
That has that top section above the half or 5/8 wave point not radiating much
at all.  In practice, it seems to work well.  WNBH has the full kilowatt into
that tall tower, and covers pretty well for a local station.

One of these days I'll get an FIM out there and tune the capacitor for maximum
field.  I'll bet it's close to where it is now.

I have often wondered how well an elevated feed point would work.  Find a
point where the tower is between 180? and 225? down from the top.  Put a
skirt feed above that.  Either use the existing radials as a counterpoise
(sans insulators) or a detuning skirt below that.  I wonder how much the
elevated feed would affect field strength?  It would be interesting to model
in EZNEC, though it would take a while to enter the data.

Craig Healy
Providence, RI

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_______________________________________________
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