Kite LF antenna

[Andre Kesteloot]

This is a multi-part message in MIME format.
--------------378309D1E0D34D6B5EA2189B
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Tacos Gang
please note the details of G3PLX's idea re kite antenna for 136 KHz, for a
gain of 20 dB
Andre N4ICK
**********************************************************
Peter Martinez wrote:

> >From Peter Martinez G3PLX Kendal Cumbria
>
> AT 0905z and 0910z today 29th March, received two one-minute
> "VVV DE LX1PD" test transmissions on 136.716 kHz. Signal was
> 13dB above noise in 25Hz bandwidth, about 2dB stronger than
> G2AJV who was beaconing nearby.
>
> Kite experiments continue, but not yet got the aerodynamics (or the
> weather) to the point where I could confidently leave the kit to it's
> own devices and start tuning it up, but getting 300ft of pvc insulated
> stranded hookup wire in the air at 30 degrees to the vertical is
> achievable. When I do get it radiating, I will probably initially leave
> the transmitter on beacon with something like "DE G3PLX KITE
> QSA?" and hope that people can send me signal reports by other
> means. Only when I am confident that I can leave it to fly by itself for
> a few hours will I try for live QSOs. With an antenna at the maximum
> legal height of 200ft and assuming ground and coil losses are the
> same as my present setup, I estimate a signal level increase of
> about 20dB, or an emrp of +20dBm with my 40 watt transmitter.
>
> 73
> Peter G3PLX



--------------378309D1E0D34D6B5EA2189B
Content-Type: message/rfc822
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

Return-Path: <owner-rsgb_lf_group@troy.blacksheep.org>
Received: from postoffice2.bellatlantic.net ([199.45.32.41])
          by postoffice3.bellatlantic.net (Post.Office MTA v3.1.2
          release (PO203-101c) ID# 0-43173U99000L2S100) with ESMTP
          id AAA3596 for <akestelo@bellatlantic.net>;
          Sun, 29 Mar 1998 04:56:39 -0500
Received: from postoffice.bellatlantic.net ([199.45.32.39])
          by postoffice2.bellatlantic.net (Post.Office MTA v3.1
          release PO203a  ID# 0-43172U99000L2S100) with ESMTP id AAA27929
          for <akestelo@bellatlantic.net>; Sun, 29 Mar 1998 04:56:39 -0500
Received: from pmdfsrv.bellatlantic.net ([199.45.32.45])
          by postoffice.bellatlantic.net (Post.Office MTA v3.1
          release PO203a  ID# 0-43172U39000L2S100) with ESMTP id AAA23658
          for <akestelo@bellatlantic.net>; Sun, 29 Mar 1998 04:56:38 -0500
Received: from mail5.bellatlantic.net ([151.198.0.38])
          by pmdfsrv.bellatlantic.net (Post.Office MTA v3.1 release PO203a 
          ID# 0-43174U177000L2S100) with ESMTP id AAA5637
          for <akestelo@bellatlantic.net>; Sun, 29 Mar 1998 04:56:38 -0500
Received: from relay2.bt.net (picnic.ukcore.bt.net [194.72.6.50])
          by mail5.bellatlantic.net (8.8.5/8.8.5) with SMTP
	  id EAA05980 for <akestelo@bellatlantic.net>; Sun, 29 Mar 1998 04:56:36 -0500 (EST)
Received: from troy.blacksheep.org [194.75.130.80] 
	by relay2.bt.net with esmtp (Exim 1.82 #1)
	id 0yJEiv-0003V2-00; Sun, 29 Mar 1998 10:49:54 +0100
Received: (from root@localhost) by troy.blacksheep.org (8.6.12/8.6.12) id JAA16124 for rsgb_lf_group-outgoing; Sun, 29 Mar 1998 09:49:56 GMT
Received: from rhenium (cerium.btinternet.com [194.73.73.93]) by troy.blacksheep.org (8.6.12/8.6.12) with SMTP id JAA16120 for <rsgb_lf_group@blacksheep.org>; Sun, 29 Mar 1998 09:49:54 GMT
Received: from btinternet.com [195.99.44.230] 
	by rhenium with smtp (Exim 1.70 #1)
	id 0yJEiX-0003TX-00; Sun, 29 Mar 1998 10:49:30 +0100
Message-ID: <MAPI.Id.0016.0065746572204d613134463730303030@MAPI.to.RFC822>
Priority: Normal
To: LF Group <rsgb_lf_group@blacksheep.org>
MIME-Version: 1.0
From: Peter Martinez <Peter.Martinez@btinternet.com>
Subject: LF: LX1PD received
Date: Sun, 29 Mar 98 09:48:15 GMT
Content-Type: text/plain; charset=US-ASCII; X-MAPIextension=".TXT"
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org

>From Peter Martinez G3PLX Kendal Cumbria

AT 0905z and 0910z today 29th March, received two one-minute 
"VVV DE LX1PD" test transmissions on 136.716 kHz. Signal was 
13dB above noise in 25Hz bandwidth, about 2dB stronger than 
G2AJV who was beaconing nearby.

Kite experiments continue, but not yet got the aerodynamics (or the 
weather) to the point where I could confidently leave the kit to it's 
own devices and start tuning it up, but getting 300ft of pvc insulated 
stranded hookup wire in the air at 30 degrees to the vertical is 
achievable. When I do get it radiating, I will probably initially leave 
the transmitter on beacon with something like "DE G3PLX KITE 
QSA?" and hope that people can send me signal reports by other 
means. Only when I am confident that I can leave it to fly by itself for 
a few hours will I try for live QSOs. With an antenna at the maximum 
legal height of 200ft and assuming ground and coil losses are the 
same as my present setup, I estimate a signal level increase of 
about 20dB, or an emrp of +20dBm with my 40 watt transmitter.

73
Peter G3PLX


--------------378309D1E0D34D6B5EA2189B--