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Re: Topband: Which RX antenna is better?

To: terry burge <ki7m@comcast.net>, topband@contesting.com
Subject: Re: Topband: Which RX antenna is better?
From: CUTTER DAVID via Topband <topband@contesting.com>
Reply-to: CUTTER DAVID <d.cutter@ntlworld.com>
Date: Tue, 30 Jul 2019 09:27:59 +0100 (BST)
List-post: <mailto:topband@contesting.com>
If it hasn't already been mentioned, here's something to watch: 
https://www.youtube.com/watch?v=fyZR9uMBnIo all about receive antennas.  
about an hour in W3LPL gets into more detail about high and low Z circle 
arrays.  I'm definitely thinking about this on a neighbour's land.   

David G3UNA/G6CP


> On 30 July 2019 at 08:34 terry burge <ki7m@comcast.net> wrote:
> 
> 
> Hi again folks,
> 
> 
> Got some great advice from several others. 'Shared Apex'; KD9SV 
> bi-directional beverage recommended; K9AY (guess I need to get busy and 
> finish mine); Hi-Z 8 along with Waller-Flag at 95' head and shoulders above 
> others (but expensive and tough to build); both K9AY and Beverages not very 
> effected by TX ants/other objects around them so much. No real 
> recommendations for DHDL, EWE, Flag/Pennant, etc. Being that my property is 
> only one and a half acres for all but the bi-directional KD9SV beverage it 
> sounds like my first step is to get the K9AY going and the beverage if I can. 
> That does mean some 'interesting' hill climbing exercise and hopefully my 
> neighbor won't be target practicing while I'm on his hillside. Don't we hams 
> do some strange things just to be able to hear radio signals? 
> 
> 
> Anyway, that's what I got so far. I do wonder which is better between the 
> 'shared apex loop(s)' and maybe a 4 or 8 vertical RX array from DXE. Why 
> hasn't any hams wrote about what is involved in making a high impedance 
> receive vertical work? Of course that requires Doppler shifts I guess like I 
> used in the USASA for direction finding way back when (flare 7/9 style). Who 
> would have thought I'd be looking at using that technology so many years 
> later?
> 
> 
> Terry
> 
> KI7M
> 
> > On July 28, 2019 at 9:27 PM terry burge <ki7m@comcast.net> wrote:
> > 
> > 
> >     Hi folks,
> > 
> >     I have four kits purchased on ebay for receive antennas as well as a 
> > bi-directional beverage from KD9SV. Looking on my county plot map it looks 
> > like I can run about a 412' beverage using my neighbors ground and mine. 
> > Got a good neighbor you could say who just doesn't want a BOG to trip on 
> > but a beverage not too low to walk into is Ok. My ebay provided kits are 
> > DHDL, EWE and Penant/flag/diamond from a low cost Canada source. But I'm 
> > faced with the problem of fences, power lines, roads and my TX antennas on 
> > my 1 1/2 acre plot. If one of those antennas could handle being near the 
> > fences,etc or TX antennas I'd like to hear about it. I've already got a 
> > K9AY in the works and that one is near my 40 meter 4-square. Running the 
> > beverage is going to be near or even under my K8UR style 80 meter 4-square 
> > made with 1/2 WL slopers. I've thought some about converting the 80 meter 
> > 4-square to using 3":irrigation tubing extended with some 3" irrigation 
> > tubing and a coil at the elevated base b
 ut
>   I'm just not sure if it would be an improvement. It would be near 50' 
> verticals if I could do it. Not sure if I would lose too much gain.
> > 
> > 
> >     Any suggestions other  than 'give up'? I've always had a time hearing 
> > the DX especially on 160 meters.
> > 
> >     Terry
> > 
> >     KI7M
> > 
> > 
> 
> 
>  
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