Can Tenna

[Steve and Anne Ray]

I built my Heath Can Tenna about 20 years ago.  Recently I did some
rerouting of the RF cables with a new Antenna Switch.  I noted the SWR was
about 1.2 to 1.3 to one with the Can Tenna yet when I used a small QRP dummy
load the SWR was flat, the resistance of the QRP dummy load was 51 ohms.  I
then went on to measure the resistance of the Can Tenna and found it to be
41 ohms, obviously this was the cause of the 1.2 SWR.  I have never had a
rig that runs more than 100 Watts so I don't see how I could ever over heat
it.  Has anyone else run into this where the Can Tenna has changed
resistance by such a significant percentage?

73,

Steve Ray K4JPN ex K1VKW HW-101, HW-8, SWL 30-40,
Pixie II, NC 38S, OHR 100A 30 M and Heath Kit fan
Warner Robins, Georgia

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