[Boatanchors] Use of 275 watt Johnson matchbox

w8au at sssnet.com w8au at sssnet.com
Mon May 23 23:46:01 EDT 2011


At 10:39 PM 5/23/2011, John King wrote:
>I normally use a Heath KW T  Match 2KW PEP rated tuner. It seems to 
>work well. I
>recently loaned that antenna matcher to my son, N5ASM to use.
>
>Field Day is coming up and I plan to put a Heath Apache and Mohawk 
>rig on AM for
>the Club as one of several stations to be used. I have built a 135 ft dipole
>with 450 open wire line to use with the Heath AM rig. I have a 275 
>watt Johnson
>Matchbox to use with the open wire line  fed dipole.
>
>Since I am not accustomed to using the Johnson Matchbox, balanced 
>tuner, I would
>appreciate your input and suggestions for using the Johnson 
>Matchbox. Would I be
>better off borrowing my heath tuner back for field day or using the Johnson?

Not necessary, John:  The Matchbox is rated for 275W AM operation and it is
rugged.  Should match your specific C-F antenna easily on the FD bands.
It is a true balanced coupler without any toroid baluns that don't handle high
reactance very well.

Perry  w8au 



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