[BC] Designing a four station RF STL system

[Gary Glaenzer]

" I run a Comrex Access
 at one of my stations that goes from one access point through their
 router to the other access point and it is OK, not great, but OK"

'blips' every so often ?

I get that here, too

G


----- Original Message ----- 
From: "Stevan A. White" <w5saw at pathwayz.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Wednesday, March 21, 2007 9:07 AM
Subject: Re: [BC] Designing a four station RF STL system


> Beware the Big Pipe!  The only way I'd trust it for that many stations
> at once is to put it on a dedicated circuit from end to end.  Amount of
> network traffic, the ISP's router, and many other things affect the
> quality of the end product.  IF you can get your ISP to give you WAN
> type performance on their network it might be OK.  I run a Comrex Access
> at one of my stations that goes from one access point through their
> router to the other access point and it is OK, not great, but OK.  I
> have a friend who is an engineer at a station in another town whose
> network distributes _everything_ to _all_ their stations via the Big
> Pipe.  They once had problems no one could (or would?) fix and it
> stuttered, stammered and hiccuped from a Friday afternoon until some
> time Monday morning -- ALL WEEKEND!  The only song they needed to play
> then was the old ballad "Where Have All The Listeners Gone?"  Be very
> sure that the Big Pipe is the right solution for the first "hop" in this
> system, otherwise it could be quite a problem!  I'd leave the ISDN
> backups in place if I could justify it.  Starlinks are great from there
> to the transmitter sites.  You might save a dollar or two by using the
> four channel Starlink to deliver the audio to the site where there are
> two co-located transmitters.  All you need be concerned with there is
> getting the gozintas and comezoutas in the right spot.  Let us know what
> you decide.  You may turn out to be the guru if you plan and execute
> this scheme well.
>
> Best Wishes,
> Steve White
>
> jeff at rfproof.com wrote:
> > Request to the brain trust:
> >
> > Oh gurus,
> >
> > We are designing an RF STL system for four stations. The studios are in
a valley. The present STL paths are Intraplex based and interconnected by
T1s. Backup is by Zephyrs interconnected by ISDN. One backup is a pair of
15kHz EQ'd lines.
> >
> > We are nearing a contract for the rooftop of a nearby 12 story building
with line-of-sight to the three sites where the four transmitting plants are
located. The rooftop has six penetrating mounts in place plus coax to an
equipment room from a previous installation.
> >
> > Our initial plan is to utilize a BE Big Pipe from the roof of the
studios to the roof of the 12 story building carrying all four signals
multiplexed - analog, HD, and IP each.
> >
> > >From there we are considering Starlinks for each of the four stations.
Two of the stations are at one of the remote sites. All links will have to
be licensed.
> >
> > What say ye? Better ideas? Caveats?
> >
> > Jeff Johnson
> > Bonneville Cincinnati
> >
> >
> >
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