[Mldxcc] Question about 40M inverted V dipoles

[Steve Dyer via Mldxcc]

That's great! 

If your analyzer can sweep frequency, you'd find it was likely resonant somewhere around what you'd expect. It never works out exactly at the harmonic. Plus, there are several factors that affect with the radio actually sees at the end of the coax.


If the tuner is happy, it's "safe", but you will be losing some power in the tuner instead of being radiated.

73 es GL,
Steve
W1SRD



________________________________
 From: Emily Clarke <n1did at comcast.net>
To: mldxcc at contesting.com 
Sent: Thursday, August 14, 2014 11:02 AM
Subject: [Mldxcc] Question about 40M inverted V dipoles
 

So at W1RH Bob's suggestion I decided to get my butt in gear and built a 
40M dipole.  It's an inverted V so it fits on my lot with a center mast 
currently 27 feet up at the center - 10 feet up at the ends.  It has a 
1:1 balun that I had for a while from LG.

I tuned it to 7.1 MHz the logic being:

7.1 = 14.2 (x2) = 21.3(x3) = 28.4(x4)

So I used my antenna analyzer and trimmed it up to 1.1 to 1 at 7.1 and 
it dips to 1.2 at 21.6 (odd).  The antenna analyzer doesn't show any dip 
at 14.xxx or 28.xxx.  This I don't understand.

However I get a perfect 1:1 match on the rig with it's tuner all across 
all of those bands which I guess is somewhat expected.  It also tunes 
flat at 17m and 12m.

Does this sound right/safe?

Emily




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