Topband: Which RX antenna is better?

[kolson at rcn.com]

On my small lot (130 ft by 50 ft, but it does have a house on it, hi hi) about the only half decent and flexible RX antenna I can manage is a K9AY. And it definitely helps most of the time, useful on 30 (once in a while), 40 (often), 80 (almost always) and 160 meters (almost always). But it's not up to those guys with bevs and circle arrays, etc. I really would like to hear better on 160m, but scheme as I might I can't come up with a RX antenna that would work better on my property. Mine has no special provision for being away from other antennas, I plunked it where it had to be to fit.

Overall, I am glad I have it, it's certainly a compromise but a decent one.

73, Kevin K3OX

----- Original Message -----
From: terry burge <ki7m at comcast.net>
To: terry burge <ki7m at comcast.net>, topband at contesting.com
Sent: Tue, 30 Jul 2019 03:34:03 -0400 (EDT)
Subject: Re: Topband: Which RX antenna is better?

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 at 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 but
 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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