On Wednesday, January 22, 2014 7:32:09 PM UTC-6, Jeff Liebermann wrote:
You're not radiating anything in receive.

Isn't part of the received signal re-radiated?
--
73, Cecil, w5dxp.com

On Fri, 24 Jan 2014 04:06:20 -0800 (PST), W5DXP
wrote:

On Wednesday, January 22, 2014 7:32:09 PM UTC-6, Jeff Liebermann wrote:
You're not radiating anything in receive.

Isn't part of the received signal re-radiated?

I have no idea. I guess it's possible for a received signal to
"bounce" off the wire and wander off elsewhere. With VSWR, the
reflected signal might be re-radiated if the source impedance is
mismatched. Dunno.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

"Jeff Liebermann" wrote in message
...
Isn't part of the received signal re-radiated?

I have no idea. I guess it's possible for a received signal to
"bounce" off the wire and wander off elsewhere. With VSWR, the
reflected signal might be re-radiated if the source impedance is
mismatched. Dunno.

Interisting thought. When the signal hits the receiver I am sure there is
some mismatch and part of it is reflected back to the antenna. Now what
hapens. All of it is radiated, part radiated and part reflected back, all
of it reflected back to the receiver ?



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It seems to me to be the same as a multipath TV signal causing
ghosting. The signal that is not on the direct path hits a building
and is reradiated and arrives at the TV at a different time.

....and how about the reflectors and directors on a Yagi antenna?

....where does the signal go when it hits something? It is either absorbed
or re-radiated -- some of course is lost in heating, but there is always
a little left over.

Food for thought!

Irv VE6BP

--
Political correctness is a doctrine, fostered by a delusional, illogical
minority, and rapidly promoted by an unscrupulous mainstream media, which
holds forth the proposition that it is entirely possible to pick up a piece
of **** by the clean end.

On Fri, 24 Jan 2014 04:06:20 -0800 (PST), W5DXP
wrote:

On Wednesday, January 22, 2014 7:32:09 PM UTC-6, Jeff Liebermann wrote:
You're not radiating anything in receive.

Isn't part of the received signal re-radiated?

I have no idea. I guess it's possible for a received signal to
"bounce" off the wire and wander off elsewhere. With VSWR, the
reflected signal might be re-radiated if the source impedance is
mismatched. Dunno.

My recollection is that in the best of cases (good match, no
dissipative losses), half of the RF energy which impinges on the
antenna goes into the feedline. The other half is re-radiated.

AIUI, the received EM field induces a current flow in the
antenna... and this current flow itself causes another EM field to be
generated and radiated away.

On Friday, January 24, 2014 1:22:02 PM UTC-6, David Platt wrote:
My recollection is that in the best of cases (good match, no
dissipative losses), half of the RF energy which impinges on the
antenna goes into the feedline. The other half is re-radiated.

That is my recollection also. 73, Cecil, w5dxp.com