Telamon wrote:
In article ,
David wrote:

Telamon wrote:
In article ,
David wrote:

Telamon wrote:

Don't just take my word for it. Go look up VSWR and read just a few
paragraphs on the subject. You work in electronics, this is important
for you to understand.

Search for the term index of refraction for similar concepts in physics
for lightwaves, which are EM waves. Then you will get the idea behind
refraction of radio waves in the upper atmosphere. Short wave radio can
teach you a lot.

One condition is closer to a short circuit. That's all I know.

I always match impedance for maximum power transfer. I voltage match as
well, when power is not so important, e.g. signal sampling.

In practical usage, "receive only" is closer to sampling.

I know enough about electronics to keep my sorry ass employed.
Do a search on VSWR, it will take you as long as posting to the news
group.

I'm trying really hard to get my boss to buy me a used network analyzer
right now. Preferably the one with a Smith Chart display. Standing
waves can set up a quasi-multipath appearing signal, but at HF the
effect has negligible consequences.

I deal in practical reality.

Most any network analyzer will have a Smith chart display.

I'm not sure how a network analyzer will help solve multi-path
problems. You can certainly test for group delay if that's what you are
getting at.

I find HF multi-path a big problem on nigh time MW and anytime SW
reception, hence I'm a big fan of sync detection to virtually eliminate
selective fading distortion.


I was talking about standing waves on a transmission line causing
multi-path-esque effects like comb filtering.

Selective fading isn't exactly classical multipath e.g. picket fencing
or aircraft flutter. I need to move the R8B next to the bedroom.
That's where I do most of my listening lately. I'm using an R75 in the
SSB mode to listen to Reno or SF most nights (although George Noory can
be heard early on 770 some nights). The SSB mode makes music kind of
dull, but is great for voice readability.

We're buying another FSH313 today. I love spending money.