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![]() "Reg Edwards" wrote - Balanced to Unbalanced WHAT ? "Balun" is a contraction of "Balanced to Unbalanced "TRANSFORMER". What is the transformation ratio of the W2DU "balun" and other devices which serve a similar purpose? Between which pair of impedances does it provide a match? If YOU cannot provide answers then there are many old-wives who can. There is a program named BALCHOKE available free from my website. ===================================== To all and sundry, My prediction about old-wives was correct. Anybody who provided a transformation ratio or mentioned matched impedances can consider him or herself to be an Old Wife. It would be a waste of time for me to explain to Old Wives how the uncertain impedance and length of line on the choke, combined with the unknown impedances of its supposed terminations, actually works. The impedance transformation ratio is entirely INDETERMINATE. But it doesn't matter two hoots provided the length of line on the choke is within certain limits. Only the choking action on longitudinal currents matters. smile please ---- Reg, G4FGQ |
#2
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Reg Edwards wrote:
"Reg Edwards" wrote - Balanced to Unbalanced WHAT ? "Balun" is a contraction of "Balanced to Unbalanced "TRANSFORMER". What is the transformation ratio of the W2DU "balun" and other devices which serve a similar purpose? Between which pair of impedances does it provide a match? If YOU cannot provide answers then there are many old-wives who can. There is a program named BALCHOKE available free from my website. ===================================== To all and sundry, My prediction about old-wives was correct. Anybody who provided a transformation ratio or mentioned matched impedances can consider him or herself to be an Old Wife. It would be a waste of time for me to explain to Old Wives how the uncertain impedance and length of line on the choke, combined with the unknown impedances of its supposed terminations, actually works. The impedance transformation ratio is entirely INDETERMINATE. But it doesn't matter two hoots provided the length of line on the choke is within certain limits. Only the choking action on longitudinal currents matters. smile please ---- Reg, G4FGQ What's a "longitudinal current?" Is there a "latitudinal current" for it to be opposed to? 73, Tom Donaly, KA6RUH |
#3
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On Thu, 28 Apr 2005 23:16:33 +0000 (UTC), "Reg Edwards"
wrote: Anybody who provided a transformation ratio or mentioned matched impedances can consider him or herself to be an Old Wife. There is NO REQUIREMENT WHATSOEVER that a balun provide a transformation ratio. To say otherwise is an old wive's ass. Danny |
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