Topband: Topband Digest, Vol 154, Issue 18

[Mike Greenway]

Hi Peter, I have built many 160 T’s and they always come out best with the vertical height + the horizontal top equaling around 135 – 140 ft for 1820.  I know you mentioned 1900 but you can scale that from these numbers.  I have several with 90 ft vertical and 45 top wire and friends with 70 vertical and 65 horiz top wire.  The lengths will change as you add more radials but once over 20-25 the freq change should become minor so I would not do a lot of adjustments until you get some radials on it. These numbers will vary a small amount per location of course but this should be close.  I usually put the antenna as high as possible and not trim the vertical.  I adjust the top hat on both ends.  I know that is more trouble but that way you get to maintain all the vertical height possible for your location.  I feed mine direct with a very small mismatch.  GL 73 Mike K4PI

From: topband-request at contesting.com 
Sent: Sunday, October 18, 2015 12:00 PM
To: topband at contesting.com 
Subject: Topband Digest, Vol 154, Issue 18

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Today's Topics:

   1. Tee Antenna dimensioning (Peter Bacon)
   2. Re: Pre Stew - N3A (Joe Galicic)
   3. BOG antenna research at HC1PF ( K1FZ-Bruce )


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Message: 1
Date: Sun, 18 Oct 2015 12:20:46 +0100
From: Peter Bacon <peter at g3zss.com>
To: topband at contesting.com
Subject: Topband: Tee Antenna dimensioning
Message-ID:
<CAF+ZQkAjd0SJ0pibjoUMTq2Box+psc8GgDLu8fdJ1akF0T-VXA at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

Advise please on the formula to calculate the lengths of the horizontal
elements for a 160m Tee antenna.  Currently I have a 60 foot vertical wire
suspended between the trees, with a long horizontal section making an
inverted L, but want to change it to a Tee.  I am looking to resonate the
antenna around 1.9 MHz and then bring it down with a hairpin match.
Thanks Peter G3ZSS


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Message: 2
Date: Sun, 18 Oct 2015 13:45:07 +0000 (UTC)
From: Joe Galicic <galicic at comcast.net>
To: "List, TopBand" <topband at contesting.com>
Subject: Re: Topband: Pre Stew - N3A
Message-ID:
<793005858.5188916.1445175907791.JavaMail.zimbra at comcast.net>
Content-Type: text/plain; charset=utf-8

Thanks to everyone for all the Q's and patience digging my QRP signal out. I made 103 contacts with many 6 & 9 point contacts and four 12 and 15 point contacts. Those were a real challenge. Overall band conditions were great with low QRN and local noise. I had a blast ! -73 Joe N3A/N3HEE 

----- Original Message -----

From: "Joe Galicic" <galicic at comcast.net> 
To: "TopBand List" <topband at contesting.com> 
Sent: Friday, October 16, 2015 9:53:12 AM 
Subject: Topband: Pre Stew - N3A 

I will be operating the Pre Stew as N3A (NAQCC Special Event Station). I will be QRP at 5 watts. I hope to work a bunch of you ! Thanks -Joe N3HEE 
_________________ 
Topband Reflector Archives - http://www.contesting.com/_topband 



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Message: 3
Date: Sun, 18 Oct 2015 11:47:22 -0400
From: " K1FZ-Bruce " <k1fz at myfairpoint.net>
To: Topband <topband at contesting.com>
Subject: Topband: BOG antenna research at HC1PF
Message-ID: <20151018114722.gxslmib04cgkgkws at webmail.myfairpoint.net>
Content-Type: text/plain; charset=UTF-8

?
Luis, IV3PRK/HC1PF? has been instrumental in BOG antenna research. He has brought together information from some of the top BOG antenna users/researchers, and an antenna plotting expert. He has?constructed BOG antennas that helped over come noise at HC1PF his 2nd QTH near the equator.?
?
http://www.iv3prk.it/new-page.htm
?
?
73
Bruce-K1FZ


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End of Topband Digest, Vol 154, Issue 18
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