Topband: Inverted L - newbie questions

N4ZR n4zr at comcast.net
Wed Aug 21 11:55:41 EDT 2019


I just put up an inverted L, with a vertical length of about 60 feet, 
and a total of 135 feet.  It is fed through 16 turns of RG-400 on a 
ferrite core at the base. There are, as yet, no radials.

Because I was impatient to see what was going on, I grounded the shield 
to a single copper-plated ground rod and connected my MFJ259B. I 
expected a high R value, and I got one - 112-122 ohms.  But surprisingly 
(to me), lowest SWR was at 2.070 MHz, and X remained at zero over quite 
a wide range - all the way down to about 1.7 MHz.

Is this all to be expected?  I plan to put down at least minimum radials 
in the next few days, and would expect the R value to drop as I do so. 
Am I off-base?

-- 

73, Pete N4ZR
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