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10032 Island Drive, Brainerd, MN  56401


Engineer's Log of Mark W. Persons
KBOT Radio Transmitter Site Moving

Wednesday, May 4, 2011:  A new Broadcast Electronics FM 25T Transmitter arrived to a new transmitter site near Detroit Lakes, Minnesota.  Here it is with some of the packing material still in the power amplifier compartment.

A CircuitWerkes SiCon-8 Remote Control is in the equipment rack on the left.  This will allow this 25 KW radio transmitter to be controlled by telephone and Internet simultaneously if need be.  There is some custom-built gear in the rack too with more to come soon.

Mark was busy wiring the transmitter.  He tested it into a 25 KW dummy load because the tower and antenna were not complete at that time.

Project Manager Jack Hanson helped.  The transmission line between the transmitter power amplifier and its harmonic filter was lengthened to accommodate the height of transmission line run in the building.  That run will include RF filters because a second station is slated for this tower sometime in the future.   

Part of the project was installation of a new Kohler 125 KW backup power generator.  This unit has a John Deere diesel engine and can come online in as little as 10 seconds from a cold start. 

See an article for Radio World magazine that Mark wrote a while ago at:  http://mwpersons.com/articles/10-15-10-RW-gen-maintenance.html

Setting the generator in place is a very exacting job. 

Had signals tell the crane operator what to do.  No mistakes are allowed here. 

Stay tuned for more updates on this project as they happen.

Quote of the day:  A very quality upgrade for this station.  Mark

The stories go on and on.  Stop in again sometime.  I'll leave the soldering iron on for you. 
Mark W. Persons

  Questions?  Email Mark Persons:  teki@mwpersons.com    

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page last edited 02/16/2016