[Elecraft] OT: T2FD

[Edward R Cole]

Just a couple notes:

My new two-yagi 6m array uses G0KSC LFA yagis ... not yet tested on 
the air but hoping to see big improvement in eme Rx.

Tried a 480-foot BOG for 630m and did not do as well as my 
inverted-L, though it was considerably quieter.  Not surprised that 
only having room for a 1/4 wavelength Beverage.  Used land alongside 
my neighbor's private airstrip as having less than 2 acres is not 
conducive to owning a Beverage.

Eventually, I will try a large shielded loop Rx antenna with preamp on 630m.

I started out on 40m with a center-fed folded dipole and built many 
dipole antennas early in my ham radio "career".  Currently use a 
80/40m inverted-V "fan style" fed with coax and balun.  Works most of 
AK well on those bands.

I built a 6m/10m J-pole but never worked well for ground-wave 
contacts.  I think a turnstyle on 10m might be interesting, esp if 
phased for circular pol. or feed individually my dual Rx K3 for diversity.

Computer modeling has greatly affected VHF antenna designing.

73, Ed KL7UW

Date: Wed, 05 Dec 2018 19:41:52 -0600
From: John Simmons <jasimmons at pinewooddata.com>
To: "Dave Cole (NK7Z)" <dave at nk7z.net>
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] OT: T2FD

Yes and no.....

Computer modeling has improved antenna design tremendously, and that is
definitely new. There are all sorts of new variations:

   * G0KSC (and others) yagi designs
   * Broadband aluminum half-wave vertical designs from GAP
   * Broadband dipoles including the OCFD (look for an upcoming book)
   * Improved baluns with much better characteristics
   * Beverage on ground

to name a few off the top of my head.

73,
-John NI0K


73, Ed - KL7UW
   http://www.kl7uw.com
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