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Old June 5th 04, 07:15 PM
Cecil Moore
 
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Reg Edwards wrote:
What's the percentage current unbalance on the balanced line when there's a
450-ohm to 50-ohm, balanced to unbalanced junction without a balun?


You didn't give enough information for anyone to provide a valid answer,
Reg. What is the impedance from the junction looking back toward system
ground? If it is three ohms, a balun is necessary. If it is 300 ohms,
you can probably get by without a balun.
--
73, Cecil http://www.qsl.net/w5dxp



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Old June 5th 04, 08:13 PM
Reg Edwards
 
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"Cecil Moore" wrote Reg Edwards wrote:
What's the percentage current unbalance on the balanced line when

there's a
450-ohm to 50-ohm, balanced to unbalanced junction without a balun?


You didn't give enough information for anyone to provide a valid answer,
Reg. What is the impedance from the junction looking back toward system
ground? If it is three ohms, a balun is necessary. If it is 300 ohms,
you can probably get by without a balun.

OK, so it's 3 ohms. Wot's the percentage unbalance ?
Just a number is required.

If it's 300 ohms. Wot's the percentage unbalance ?
Just another number is required.

What are the odds on you providing answers ?
----
Reg


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Old June 5th 04, 09:09 PM
Cecil Moore
 
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Reg Edwards wrote:
"Cecil Moore" wrote Reg Edwards wrote:
You didn't give enough information for anyone to provide a valid answer,
Reg. What is the impedance from the junction looking back toward system
ground? If it is three ohms, a balun is necessary. If it is 300 ohms,
you can probably get by without a balun.

OK, so it's 3 ohms. Wot's the percentage unbalance ?
Just a number is required.


How about Ohm's law? 3 ohms in parallel with ??? ohms.
I forgot to ask what is the impedance looking in the
direction of the load.

If it's 300 ohms. Wot's the percentage unbalance ?
Just another number is required.


How about Ohm's law? 300 ohms in parallel with ??? ohms.
--
73, Cecil http://www.qsl.net/w5dxp



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Old June 5th 04, 09:19 PM
Richard Clark
 
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On Sat, 05 Jun 2004 15:09:55 -0500, Cecil Moore
wrote:
I forgot to ask

:-)
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Old June 5th 04, 09:29 PM
Cecil Moore
 
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Richard Clark wrote:

wrote:
I forgot to ask


:-)


Richard, I am really glad that you are so omnipotent
and omniscient that you never make a mistake of
commission or omission. I, OTOH, make a lot of them.
--
73, Cecil http://www.qsl.net/w5dxp



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Old June 6th 04, 12:03 AM
Reg Edwards
 
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Dear Cec,
Tell you what (an English coloquialism), YOU provide all the information
you need to do the calculations and thereby provide some answers. Typical
results under typical conditions, plus or minus 15 percent is all that's
needed.

If you prefer it that way, you can even invent your own questions.
===
Reg, G4FGQ

By the way, I'm on Blue Nun Merlot tonight. Which is nicely appropriate now
that Bush and Blair have belatedly come round to the French (and the rest of
the World's) point of view. Vive L'entente Cordiale.

=====================================

"Cecil Moore" wrote in message
...
Richard Clark wrote:

wrote:
I forgot to ask


:-)


Richard, I am really glad that you are so omnipotent
and omniscient that you never make a mistake of
commission or omission. I, OTOH, make a lot of them.
--
73, Cecil http://www.qsl.net/w5dxp



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Old June 6th 04, 01:36 AM
Cecil Moore
 
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Reg Edwards wrote:
Tell you what (an English coloquialism), YOU provide all the information
you need to do the calculations and thereby provide some answers. Typical
results under typical conditions, plus or minus 15 percent is all that's
needed.


Reg, the question (assertion) was yours. Now you have to defend it by
furnishing the impedance looking back toward the source and the impedance
looking toward the load. I can tell you what it is in my antenna system,
but not yours or anyone else's. In my system, the impedance looking back
toward the source is very low. The impedance looking toward the load is
between 25 ohms and 100 ohms. That's an ideal application for a balun.

By the way, I'm on Blue Nun Merlot tonight.


I just finished off 5 liters of Almaden Cabernet Sauvignon. All I
have left in this dry county is Coor's light and Bella Sera Merlot.
That Italian wine is not as good as it used to be. They must have
changed from wooden barrels to mass produced metal vats.
--
73, Cecil http://www.qsl.net/w5dxp



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