Richard Williams wrote:
>
> I have installed a 160 mtr delta loop off a 90 ft tower. I am having an
> unusual problem (I think!!) with the feed and changing SWR as power is
> applied.
>
> The antenna resonates about 1837kc with a good swr (1.05 to1). With
> about 250 watts applied the swr slowly rises to about 1.9 to 1 on
> 1837kc. This takes about 5 minutes or so. With 1kw out the process >is
> alot faster (about 20 seconds).
Hi Dick. It sounds like something is getting hot. How is your 75 ohm
stub connected to the feedline? I have had some of them get so hot it
melted the insulation in the barrel connector. 73
Tom W7WHY
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