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Dealer,
No, I wasn't thinking 20 meters. More like, 3 X 3.7 Mhz = 11.1 Mhz.
(Harmonics, the 'odd' multiples tend to 'match' better than the 'even' one, something closer to a low input impedance than the 'even' ones.)
- 'Doc

I don't have an 'Alpha-Delta' antenna. I'm beginning to wish I did so I could do some 'measuring' with it. I'm too cheap and lazy for that, so am enjoying other people doing that 'measuring'! Wouldn't 'hi-jack' this thread for nothing. If I get 'close' to doing that, somebody tell me so I can shut up!

<blockquote data-quote="W5LZ" data-source="post: 121168" data-attributes="member: 129">Dealer,No, I wasn&#039;t thinking 20 meters.&nbsp; More like, 3 X 3.7 Mhz = 11.1 Mhz.(Harmonics, the &#039;odd&#039; multiples tend to &#039;match&#039; better than the &#039;even&#039; one, something closer to a low input impedance than the &#039;even&#039; ones.)<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=";)" title="Wink&nbsp; &nbsp; ;)"&nbsp; data-smilie="2"data-shortname=";)" />&nbsp;- &#039;DocI don&#039;t have an &#039;Alpha-Delta&#039; antenna.&nbsp; I&#039;m beginning to wish I did so I could do some &#039;measuring&#039; with it.&nbsp; I&#039;m too cheap and lazy for that, so am enjoying other people doing that &#039;measuring&#039;!&nbsp; Wouldn&#039;t &#039;hi-jack&#039; this thread for nothing.&nbsp; If I get &#039;close&#039; to doing that, somebody tell me so I can shut up!</blockquote>

[QUOTE="W5LZ, post: 121168, member: 129"] Dealer, No, I wasn't thinking 20 meters. More like, 3 X 3.7 Mhz = 11.1 Mhz. (Harmonics, the 'odd' multiples tend to 'match' better than the 'even' one, something closer to a low input impedance than the 'even' ones.) ;) - 'Doc I don't have an 'Alpha-Delta' antenna. I'm beginning to wish I did so I could do some 'measuring' with it. I'm too cheap and lazy for that, so am enjoying other people doing that 'measuring'! Wouldn't 'hi-jack' this thread for nothing. If I get 'close' to doing that, somebody tell me so I can shut up! [/QUOTE]

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