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Hi Laurence,
I had the same issue too...no local
availability. Solution? Home brew by
winding a trifilar transformer on a large toroid
removed from a computer
power supply. Bench tests indicate that it
works fine, giving nice deep
nulls with a variety of loads, both reactive and
purely resistive.
I'm also given to believe that a telephone
"repeater coil" could be used for
this application as well. They are known for
their excellent balance and
are high quality. I have several here, so I
may just lash something up to
see if indeed they would work. I'll post my
results.
73, J.B., VE3EAR - VE3WZL
Solar and wind
powered
EN93dr
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