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@comcast.net>
To: terry burge <ki7m@comcast.net>, topband@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@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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