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Radio Broadcast Technical Consulting and Sales
10032 Island Drive, Brainerd, MN  56401


Technical Tips from Mark W. Persons
Grounding Rod/Shorting Stick for Transmitters

Every radio broadcast transmitter needs at least one high-voltage safety grounding rod so the engineer can confirm that all high voltages have been reduced to zero before he or she works on the transmitter.  These rods can be easily constructed in a well-equipped shop. 

This one uses a six-inch long by 1/4-inch aluminum rod (on the upper right) that has been threaded at the right end to accommodate four 1/4-20 nuts and a wire terminal at the end of a #12 or larger stranded cable.  #6 is best depending on application.  The wire terminal is crimped and then soldered to insure integrity.  A tie-wrap is used to strain-relief the cable.  That cable needs to be firmly grounded to the chassis of the transmitter. 

This rod uses a 12-inch long by 1/2-inch diameter PVC plastic pipe handle.   

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

Questions?  Email Mark Persons:  teki@mwpersons.com       

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page last edited 04/08/2016