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Best length from a mechanical standpoint? Windload? Construction with available pieces? From a simple matching standpoint? From an electrical standpoint? Answer for electrically is another 5/8 as vertical as possible. Provides max low angle gain and closest to a balanced feedpoint load...

It's fairly clear these days that it's what someone does after the license is issued that counts. That's just the way it is. Otherwise there wouldn't be enough people on the ham bands to keep them alive.

ssb using a tone generatoe IS cw.

How about someone test two identical antennas but tell the folks on the other end one is a fiberglass model and the other an experimental aluminum type?

For collector modulated radios one can install a resistor in series with the modulated B+ to cut down voltage to the final. The resistor gets bypassed for audio with an electrolytic cap. This mod can actually improve audio too. Not sure of values sorry.

Well if YOU have NEVER run into this I'm sure no one else will either:laugh:

Nice work!

Dry leaves, dead branches or repeatedly cooked live branches can catch on fire. There's a lot of available voltage at the ends of any antenna even at 100 watts. Much more than THHN can handle. A few feet in from the end things become safer. Remember antennas longer than 1/2 wave can have...

This design is a great idea if it works as it should. Tuning a vertical yagi mounted on a metal mast can be quite frustrating.

This may actually be a colinear design. If so it should show a little gain over the other players.

+1

There's a problem. Antenna performance should be recriprocal. If transmit indicates an improvement, receive should do the same.

That would be modulation depth and most likely average volume increases.

With loudspeakers it takes a 6db increase in power to achieve a 3dB increase in loudness due to the inverse square law.

And that concept stops being simple as soon as the impedance is complex ie: not purely resistive.

The J-pole is a good learning experience. If you want something that works a little better consider colinear vertical antennas. All you need id an insulator and an delay line like a hairpin. Look at some of the VHF Ringos for an idea.

I'm with Towerdog. Stainless sucks for re-use. I spray all my stuff with cold galvanizing compound. It does need a touchup every couple of years but it beats hauling the tower for a re-dip. Lockwashers and nylon locks don't do it for me either. Just double nut everything.

That's because SWR is only a ratio of max to min voltage or current on a feedline. Professors and engineers can be wrong. They are only people.

VSWR is the ratio of minimum to maximum voltage on a feedline. Nothing more or less. There are antenna systems which radiate more energy with a 10:1 feedline VSWR than a 1.5:1. SWR is not an indicator of efficiency. Bandwidth isn't either. Antenna systems with a lot of bandwidth are...

I've had several nice Fluke meters stolen over the years. Nobody ever took my Simpson 260.