David,
Diversity is an interesting feature. I
found even a mostly horizontal long wire
to the sub Rx was an asset with diversity.
With the two HI-Z systems & dual Rx K3s, I
have three antennas to work with for
diversity; Main, tri & circle 8.
I know you mentioned using flags, if you
by chance go the HI-Z (active Rx antenna)
route, they are about 23' high and I spray
painted mine black, just to keep people on
the hiking trail next to me, oblivious to
my antennas. In the woods they are
essentially invisible.
Usually it is the 3 & 8 I am using and
when I use them, I first do not use
diversity; I adjust the 8 which is the Rx
ant switched in as main Rx, to find the
strongest desired signal. I then switch
out the Rx just to see if it is the rare
time the sloper hears best. 99% of the
time I go back to the 8.
Then I turn on diversity and adjust the 3
for the best perceived signal in
diversity.
All of my antennas are in a poor location,
many tall trees around them and the Tx
antennas are too close to all the RX
antennas, so the expected direction is
unreliable and I have to hunt for the best
signal each time.
There is an optional encoder available by
HI-Z which has no detent as a switch does,
and the display does show direction, but I
really only listen for the best peak or
the best null, whatever I'm looking for.
Not having to keep reversing direction to
find the best signal is a wonderful thing.
Whatever you use, you'll have fun.
73,
Gary
KA1J
> Kevin
> This might help on a small lot: I am very fortunate to have a dual rx
> K3S and I am planning to use 2 flags at right-angles in the corner of
> the field I've been loaned. Being in the bushes and at modest height
> they cannot be seen and with relays to change phase of each I hope to
> get 4 quadrants in diversity reception. I chose the flag as
> deliberately lower performance than some others to avoid a hole around
> 45 degrees, ie to complement diversity and they have a good f/b
> according to lists I've seen. Everything is a compromise. I suppose
> a K9AY could be used in diversity with suitable connections. David
> G3UNA/G6CP
>
> > On 30 July 2019 at 19:01 kolson@rcn.com wrote:
> >
> >
> > 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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