[SBE] Unattended operation

[Adrienne Abbott]

It's 3 minutes for an out-of-control AM.

Adrienne

 

From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org] On Behalf Of Edwin
Bukont
Sent: Thursday, June 16, 2011 9:44 AM
To: sbe
Subject: Re: [SBE] Unattended operation

 

Always been 180 min = 3 hrs far as I can recall.  

Edwin Bukont CSRE, DRB, CBNT 
E2 Technical Services LLC
Tech-Knowledgy for Signal Integrity
Nashville, Baltimore, Whereever
V- 240.417.2475; F- 240.368.1265

 






 

  _____  

From: DanRapak at verizon.net
To: sbe at sbe.org
Date: Thu, 16 Jun 2011 12:23:46 -0400
Subject: Re: [SBE] Unattended operation

Was this time limit always 3 hours? I'm trying to recall what the
"fail-safe" timeout was on our remote controlled transmitter was when I
worked in local television in the late 1970's.

 

Dan Rapak

 

----- Original Message ----- 

From: Benedict, Raymond C <mailto:rcbenedict at cbs.com>  

To: sbe at sbe.org 

Sent: Thursday, June 16, 2011 11:21 AM

Subject: [SBE] Unattended operation

 

There are three modes of operation, Attended, Automatic Transmission, and
Unattended.  Many times ATS is mixed with unattended but they are different
modes of operation.

 

So from 73.1300, Unattended is:

 

"or unattended (where highly stable equipment OR automated monitoring of
station operating parameters is employed). No prior FCC approval is required
to operate a station in the unattended mode."

Note the "or" between highly stable and automated monitoring. 
Note there is not any requirement for automatic shutdown if the system goes
out of tolerance. So if it's highly stable it won't go out of tolerance will
it???
73.1350 (d) does require shutdown after  3 hours of ANY broadcast
transmitter if certain conditions are exceeded,  examples given are
EXCESSIVE power, EXCESSIVE modulation, or spurious signals. Which basically
means if it is causing interference to others, turn it down or off.
Common sense,  yeah, best to have some way of remotely turning it off it
sounds crazy on the air.

  _____  



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