[BC] Inversion (was STL Options)

[Robert Meuser]

This is normal during August in NYC. Z100 gets clobbered by short spaced 
WPLY Philly. At times, even 2 or 3 miles from the Empire State building 
there is strong beating. Further out,  'PLY takes over like a local.  Of 
course the reverse happens on the Philly end.

R



DANA PUOPOLO wrote:

>I worked for the 106.3 here in Providence years ago. One day I got a call that
>they were getting a 106.3 located north of them on their air monitor. The
>output power of the TX was normal. I tuned in the station at my home and sure
>enough heard Nashua NH like a local! As I was going out the door to head to
>the TX, the manager called me back to let me know that a 106.3 in CT had
>called them and they were getting OUR station on THEIR air monitor!
>
>An hour later all had returned to normal...
>
>-D
>
>
>
>------ Original Message ------
>Received: Thu, 23 Feb 2006 10:38:04 AM PST
>From: DHultsman5 at aol.com
>To: broadcast at radiolists.net
>Subject: Re: [BC] STL Options
>
> 
>In a message dated 2/23/2006 11:31:10 AM Central Standard Time,  
>kwinrich at gmail.com writes:
>
>You know  that is one thing I have not looked into...the inversion 
>layers.  I  would think they would form at different levels, but 
>**typically** where  do they form?
>
>I have one station that has major fresenel issues in the  summer 
>time.  I need to look into this  further.
>
>
>
>
>
>******************
> 
>To really protect yourself from the inveerson layers it is wise to propose  
>dual receiving antennas at different levels.   ie;  4 ft. dish at  the higher
>
>level and a 6 foot dish at about half the height.  Moseley   makes an 
>automoation switch and the newer receivers have built-in diversity 
>switching.
> 
>The inversion problems are very common along the Gulf Coasts of Texas thru  
>Florida.
> 
>I recall one station in Ft. Meyers that shared a 950 frequency with a  
>station in Tampa.
>The transmitt beam was 90 degrees away from the patch to the Ft. Meyers  
>station.  The typical Grid dish also had radiation off the sides + and - 90  
>degrees to the major as well as a significant amount off the back side.
> 
>In this case the inversion came in off the Gulf and the south side lobe of  a
>
>Tampa Rocker's morning crew was picked up by  the religious station's STL  
>receiver between Ft. Meyers and Naples.  The transmitter control was  also 
>carried on the STL so they could not turn it off without going to the 
>transmitter.
> 
>That same morning Channel 6 in Orlando wiped out Channel 6 in Homstead in  
>moset of Broward and Dade counties.  STL's all over the douthern half of  the
>
>state has problems with other signals and noise levels.
> 
>The new Backup audio CD players and harddrive systems loaded with your  
>format at the transmitter makes good sense in these cases.  Especially  if you
>have 
>a dial up or TCP/IP remote control available.
> 
>Dave
>
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