Another point with respect to loss in that coax. Because its diameter
is quite large, loss is MUCH lower than the RG8-size coax we usually
use. It is also lower because the loss in ANY coax at HF is I-squared R
loss in the copper, and the current in 75 ohm coax is proportionally
less for the same power level.
73, Jim K9YC
## say what ? What about skin effect at HF ?
.875” heliax uses a hollow cu tube. If it was solid CU center
conductor, loss’s would NOT decrease.
## Fine for your to recommend the use of 1” 75 ohm coax for a high dipole,
but do you have any clue how heavy that is gonna be ???? Never mind
the “balun” at the feedpoint.
Lets get practical for once.
Jim VE7RF
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