esieb at sympatico.ca
Sun Dec 31 01:13:17 EST 2006
You're missimg nothing, Jack.
There is no issue, really. Hooking up 50 ohm coax to a 75 ohm anteena only
provides an SWR of 1.5:1, which is not excessive. That's for a flat-top
dipole. (An inverted V Is indeed 50 ohms, or close to it.) Any pi-network
can handle that and match it. If running a rice-box, any tuner can match it
too. So Jack, there never has been a problem with 75 ohm dipoles, since
the mismatch is not a big deal.
Jack Schmidling wrote:
If a half wave dipole has a center feedpoint impedance of 73 ohms, why
am I using 50 ohm coax.
In the process of hunting up a source for coax I stumbled into this
quandary. Every source I look at says 73 ohms for a dipole.
What am I missing?
More information about the AMRadio mailing list
This page last updated 22 Feb 2018.