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Old August 28th 08, 01:22 AM posted to rec.radio.amateur.antenna
John Smith John Smith is offline
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First recorded activity by RadioBanter: Nov 2006
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Default Coupling a T2FD to a S350DL

John Smith wrote:
John Smith wrote:


My S350DL has unbalanced, 500 ohm antenna terminals on the back; I
would imagine yours to be the same.

A 1:1 balun (balanced-to-unbalanced) at the dipole and coax (75 ohm)
and a 6.666:1 UNUN (unbalaced-to-unbalanced) between the coax and the
S350DL would be the ideal setup.

Regards,
JS


Half-a-Brain-McCain'n Insane; So Lawdy Mama, It Looks Like Obama!


Oh chit, it is folded dipole, duh!

A 1:1 current choke and forget the slight mismatch!

Regards,
JS
Half-a-Brain-McCain'n Insane; So Lawdy Mama, It Looks Like Obama!


Actually, that is in error. Since the folded dipole is balanced and the
500 ohm terminals on the receiver show they are unbalanced, the 1:1
balun should suffice. It seems you will be going from 300 twinlead
(balanced) to the 500 ohm terminals.

450 ohm feedline with a 1:1 balun is yet another option ...

Regards,
JS

Half-a-Brain-McCain'n Insane; So Lawdy Mama, It Looks Like Obama!