Hi,
I apologize for posting something not directly related to Topband, but this
is where I figured I would get the best response. If you know somewhere
else I could / should ask, please let me know and I'll look there instead.
I'm building a 40m 4-square using a Collins hybrid coupler, following the
description in the latest ON4UN book. Instead of using a half-wavelength
coax to achieve the 180 degree phase shift, I'd like to use a toroid, as
shown in figure 11-89 on page 11-76, and in the description on page 11-15
(third paragraph, left hand column). Unfortunately, I can't find any
mention of the toroid core used, number of turns, required inductance, or
impedance. Can anyone recommend a core, inductance, or impedance?
73,
Chris VE3FU
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