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  #46   Report Post  
Old June 21st 05, 06:02 PM
Richard Harrison
 
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Ian White, GM3SEK wrote:
"It had been correct, when they incorrectly revised it (the conjugate
reference), now it has been corrected again."

Hope they got it right this time.

My dictionary says: "conjugate - Either of a pair of complex numbers
that are mutually related in that their real parts are identical and the
imaginary part of one is the negative of the imaginary part of the
other.

We find maximum power transfer requires equal resistances in source and
load. Also reactance, if any, be tuned out of the circuit. This is a
conjugate match, such that source and load are conjugates by the
dictionary definition.

Many texts go into detail. I like the story of conjugates given in
"Transmission Lines, Antennas, and Wave Guides", If it were at hand, I
would quote from it. Found it. See page 43. The authors are King, Mimno,
and Wing.

Best regards, Richard Harrison, KB5WZI

  #48   Report Post  
Old June 22nd 05, 01:46 AM
 
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Walter Maxwell wrote:
"Wes Stewart" *n7ws*@ yahoo.com wrote in message
...
On 20 Jun 2005 09:24:22 -0700, wrote:

|
|
|Richard Clark wrote:
| On 20 Jun 2005 01:00:51 -0700,
wrote:
| If Zo=50+j0.000000000001,
| And it is not
| then it's close enough!
| hence it follows from this logic, it is not close enough.
|
|
| Even if Zo=50+j2, then the VSWR will
|still be very close to a 1:1 match.
|
| You antenna boys don't build too many
|power amplifiers, obviously.

And you know this how? And it matters why?

But in case it does, I've been building amps since I was a teenager.
Through the years, I built a number of hf and vhf amps for friends.

Here's one I built for myself.

http://www.qsl.net/n7ws/K7CVT_Amp.html

Its replacement with an 8877 is sitting beside me.


That's a beautiful amp, Wes. I'm curious--how did it handle Slick's
1.040807999:1 swr, from his 50+j2 load impedance?


Looks aren't everything.

It couldn't handle even a 1.04:1 and
just blew out!

Now it's being used as a doorstop...


S.

  #49   Report Post  
Old June 22nd 05, 02:42 AM
Wes Stewart
 
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On 21 Jun 2005 16:46:07 -0700, wrote:



Walter Maxwell wrote:
"Wes Stewart" *n7ws*@ yahoo.com wrote in message
...
On 20 Jun 2005 09:24:22 -0700,
wrote:

|
|
|Richard Clark wrote:
| On 20 Jun 2005 01:00:51 -0700,
wrote:
| If Zo=50+j0.000000000001,
| And it is not
| then it's close enough!
| hence it follows from this logic, it is not close enough.
|
|
| Even if Zo=50+j2, then the VSWR will
|still be very close to a 1:1 match.
|
| You antenna boys don't build too many
|power amplifiers, obviously.

And you know this how? And it matters why?

But in case it does, I've been building amps since I was a teenager.
Through the years, I built a number of hf and vhf amps for friends.

Here's one I built for myself.

http://www.qsl.net/n7ws/K7CVT_Amp.html

Its replacement with an 8877 is sitting beside me.


That's a beautiful amp, Wes. I'm curious--how did it handle Slick's
1.040807999:1 swr, from his 50+j2 load impedance?


Looks aren't everything.

It couldn't handle even a 1.04:1 and
just blew out!

Now it's being used as a doorstop...



It operated a lot better than "Dr." (not so) Slick does.

He makes a comment that no one here builds amps. I present evidence
to the contrary and this is the best he can do.

What a loser.

I worked about 30 states on two-meters from the depths of AZ using
that amp. The present amp has participated in working all continents
(WAC) on two-meters.
  #50   Report Post  
Old June 22nd 05, 04:21 AM
Roy Lewallen
 
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Wes Stewart wrote:

It operated a lot better than "Dr." (not so) Slick does.

He makes a comment that no one here builds amps. I present evidence
to the contrary and this is the best he can do.

What a loser.

I worked about 30 states on two-meters from the depths of AZ using
that amp. The present amp has participated in working all continents
(WAC) on two-meters.


I think Garvin Yee ("Dr. Slick") has WALG (Worked All Los Gatos) and
maybe even WAB (Worked All Berkeley). Does that count?

Roy Lewallen, W7EL
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