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Delta Sloper Question
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July 8th 04, 02:17 AM
Tainted
Posts: n/a
On 07 Jul 2004 23:15:38 GMT,
(JGBOYLES) wrote:
Anyone know how many ohms I should be measuring at the end of a 25ft
coax cable connected to a 60ft Delta antenna?
Near zero. As I understand a Delta, or Delta Loop antenna, the DC resistance
should be zero ohms. The Delta is a closed loop. Down at the end of your coax
the DC resistance will be zero from center conductor to shield. Probably need
to disconnect the the coax from the antenna and check them seperately to insure
the coax is not shorted, and the antenna reads a short.
Right at the 529 connection at the connection end of the antenna the
resistance is infinite.
Not sure about a 529 connection, but if you take the ohm readings with the
antenna disconnected from the coax, you should find the problem.
73 Gary N4AST
Appreciate the help but it's not a closed loop. At least I don't
think so. There are two antenna lines - ones 60ft and the other 16ft.
They are connected to the 529 center post. The ground lead (30ft) is
connected to the outer part of the 529. I'm pretty sure it's right
that there is infinite ohms there because they are not physically
touching in any way. I'm confused because simply adding 25ft of coax
causes a 2.5meg ohm reading. In essence I'm still across the 529 just
25ft further away. So nothing should change.
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