feedpoint

And we are impressed by the potential of a "Rapid Media Response Team" - maybe we'll get a chance to do it again some time, with better communications and closer access to bandwidth, so the editor (me) and feedpoint won't be clear across town.

Boing Boing 2004

The feedpoint Z on most bands is such that a simple L network should do the job.

eHam.net News 2009

Manufacturers like DX Engineering are recommending the addition of 150'+ of RG-213 to bring the feedpoint impedance into a range that some tuners can handle more easily.

eHam.net News 2009

Some of the antenna manufacturers advise that a tuner should be connected at the feedpoint for best efficiency - no big secret there.

eHam.net News 2009

Also, the feedpoint Z appears to be low enough that the high voltages associated with an end-fed half-wave don't become a problem, yet, as you say, high enough that ground losses are reasonable.

eHam.net News 2009

That eliminates having to deal with reactance at the feedpoint, but the resistive part of the feed impedance is so low that ground loss becomes a major issue.

eHam.net News 2009

If I use coax to feed a balanced antenna, I use a current balun at the antenna feedpoint.

eHam.net News 2009

The high feedpoint Z reduces ground losses and the adjustability of the tuner means everything can be a little off and the system will still work well.

eHam.net News 2009

I used G4FGQ's ENDFEED to get an idea of the feedpoint impedance of a ~43 foot vertical, and the L network needed to match it to 50 ohms.

eHam.net News 2009

As you know, with the varitations in feedpoint impedance and very high SWR on some bands, the feedline is going to take a beating at 1500 watts and will likely fail.

eHam.net News 2009