I always enjoy reading the experience that folks have with their
receiving antennas. The RDF and comparison charts that are published
these days are pretty accurate so you can get a very good feel for how
the antennas stand up against each other.
When it comes to the question of "Which RX
There is a 50KW AM broadcast station line of sight to my top band antennas.
Caused huge problems at greyline because they are dawn to dusk transmitting.I
built the HPF in the ON4UN handbook. As designed the rejection below 1.8 mhz
was 60 db. With careful tuning of the coils and the use of a
On 7/29/2019 10:33 AM, Grant Saviers wrote:
Here is what I used when I had the same problem 50kw line of sight 4
miles 1MHz. Expensive, but worked very well.
http://herostechnology.co.uk/pages/RF_Filters.html
Yes, at 1 MHz, this would work well. Other hams would be
advised that it is
me 2...i've been using a hiZ 4square on opposite sides of my house in a small,
noisy suburban location for > 10 years...Lee IS 'da man'...i was 'an early
adopter..'
i don't keep up with the Texas, or 5 land, rural big guns, but i try, ha! at
242 worked, still a long ways from 300 since i
Thanks for all the replies. My friend is probably going to go with a DLW
custom filter. I'm embarrassed that I forget about the common mode choke
as I use them here on all bands especially 160M. I told him I'd help him
build one.
73 Mark K3MSB
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I too voice the support for HI-Z antennas.
The best possible out there? That I have
no idea, but after many different attempts
to hear on 160, the HI-Z Triangle was
wonderful and performed better by far than
my efforts in a marsh, trying to put up Rx
antennas. I then bought the 8 element
I can vouch for Lee's Hi-Z designs. I am using the Hi-Z Triangular Array at
50 foot spacing and get 6 directions. It works about the same as a 500-700
foot beverage with better front to back. You get that with a 50 foot
triangle in the corner of your lot. If you get the triangular array
I have another comparison chart here on the Hi-Z Antennas website. It has a
little more information.
https://www.hizantennas.com/receiving_antennacomparison_char.htm
Lee K7TJR
Hi-Z Antennas
-Original Message-
From: Topband On Behalf Of terry burge
Sent: Tuesday, July 30, 2019 11:44
Thanks to Bob, N4PQX I got this link to an active chart comparing RX antennas.
Thanks to K7TJR this might prove very helpful to anyone thinking about
investing in a receive antenna. Also has some active plots for the various
antennas. Terry, KI7M
https://www.k7tjr.com/rx1comparison.htm
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
As a minority report by one, IMO the simplest, smallest, cheapest, good
RDF receive antenna is the DHDL. RDF around 9, pretty good for $20 of
wire, one BN-73-202, one resistor, some string and two trees (free here)
or supports 65' apart. Ground rods for a 200' BOG will cost more, take
more
I bought a DLW Associates FL1718 filter and have been completely
happy with that choice. I got mine direct from Doug Williams
because I wanted a custom filter with one of the notches centered
right on the broadcaster's frequency. Specs say >90dB attenuation
at that notch frequency. I was willing
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
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
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