I have been connecting my Cantenna to a long fence in the garden and got S9
reports from Finland. Works fine and nice swr too, hi!
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>Från: Skip S Isaham <nospam4me@juno.com>
>Till: amps@contesting.com
>Ämne: [AMPS] terminations that don't...
>Datum: ons 22 sep 1999 07.41
>
>
>Jim,
>I used a Kenwood TS-830 into a cantenna to heckle a good friend while he
>ran the west coast swap net on 40 meters. He lived about 2 miles away and
>50 watts would get over to his house just fine.
>It was a tremendous amount of fun to try and crack him up when no one
>past the few miles could here the comments.
>terminations don't...
>cheers
>skipp
>
>
>[snip]
>Hi,
>Last night while tuning up into the DL to work the
>3C0 (which I did, hooray), I noticed I could hear
>a faint bit of rcv'd signal in the rig while connected
>to the DL, not the antenna! The antenna tuner unit
>was in the "Bypass" switch position to get to the DL.
>
>However, I can also hear a faint active RF signal when
>the wafer switch in the antenna tuner is just set to
>Coax 2, which in my case just goes to an unused
>antenna input 239 socket on the back of the tuner.
>Maybe this is just 60 to 80 dB down or more
>coupling between wafer switch contacts?
>Top view down onto my tuner showing layout
>and two wafer antenna/DL switch can be seen at:
>
> http://www.palstarinc.com/palmain.htm
>
>As I look at it, the DL is a sort of shielded 50 ohm
>resistor connected between shield and center
>conductor of about 8' if coax to the unit sitting outside
>in a container of silicon oil. The container has fins to
>dissipate any heat, and the DL is rated to take a
>couple of kW continuous (Bird 8890 unit).
>
>Should the unit's shielding case be grounded to
>the station common ground point outside? The
>DL is sitting out their just beside the ground
>rod and cold water service pipe to which the
>rod is also strapped with 1" wide braid.
>
>Would a 1" wide braid to the DL case be needed,
>wise, or silly??
>73, Jim, KH7M
>
>
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