Topband: RX input impedance

[Ford Peterson]

I just used the Autek VA-1 to measure the input impedance of the receiver
port on my IC-746.

Interesting!

On most bands, the input impedance measured in the neighborhood of 50 ohms.
On 160 meters, it was over 220 ohms.  What's up with that?  Do you suppose
it makes a difference?  My 160 antenna is almost a perfect 50 ohms at 1830
at the shack.

My question is, do I care?  More important, should I care?

Ford-N0FP
ford@cmgate.com


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