To have an idea of what kind of spread of SNRs one can expect from skimmer
reports, I performed a test this morning
I recorded two overlapping CQ messages with two different callsigns, one had
the sidetone on 500 Hz (EA5RS) and the other at 900 Hz (EA5BY), and applied
it to the MIC input of my
When I last investigated, all the skimmers and Web SDRs that were outside
of North America all had terrible receive antennas for copying DX signals
on 160. (And who knows how many of them are in quiet locations?)
When I say terrible, I mean small magnetic loops, very short whips, low
dipoles, a
Sure it is. Most skimmers are setup to receive all directions on more then
one band.
Anyway, Skimmers only show S/N.
73
Peter
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike
Waters
Sent: Dienstag, 19. August 2014 11:34
To: topband
Subject: Re:
So far no show.
Lou KE1F
On 8/18/2014 3:30 PM, Brian Sarkisian wrote:
A35LT was on 160 during the North American morning grey line. We plan on
being on the air again the next North American morning grey line.
73 de Brian, KG8CO
A35CO
_
Topband
I'll just stick in a few responses to others' comments about what I
wrote on the 'beach' thread and then I'll get out of the way.
It is tricky to use receiving tests to gauge the
effectiveness of proposed transmitting antennas
for two reasons. You are probably listening on
receiving type
the gw8izr skimmer seems pretty good to me...dr1a also...both, better than
average, IMHO
a belgian one also ( can't remember the call..) couple in JA also..
73, w5xz, dan
On Tuesday, August 19, 2014 4:33 AM, Mike Waters mikew...@gmail.com wrote:
When I last investigated, all the
I quickly noticed that some skimmers seem to have more effective antenna
systems than others.
More than S/N, I look at kinda the breadth and depth of where I'm spotted.
On 160M, GW8IZR and DL1A are where I'm first spotted. If I'm getting
spotted more broadly or deeply than that, then I know
From the reflector of the Northern IL DX Association.
73, Jim N7US
From: ni...@yahoogroups.com [mailto:ni...@yahoogroups.com]
Sent: August 19, 2014 07:49
To: ni...@yahoogroups.com
Subject: [NIDXA] New 3 el 160m yagi at 7J4AAL
Now that is an antenna!
Actually 4x DB42 are stacked and Kan applied for a 160m sideband approval
73
Peter
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Jim N7US
Sent: Dienstag, 19. August 2014 18:22
To: 'Topband Reflector'; CADXA Reflector
Subject: Topband: New 3 el 160m
When you have money, it's amazing what can be done. I thought the consensus
now is yagi antennas on 160 don't perform well (i.e. OH8X) when compared to
vertical arrays.
Doug
Think of all the ways you can hurt yourself laughing.
-Original Message-
From the reflector of the Northern IL
I'm thinking of getting the 8 element version to replace my existing
Hi-Z triangular array. Anyone have a Hi-Z 4-8PRO system they want to
let go of?
Please reply direct.
73,
Gary
KA1J
---
This email is free from viruses and malware because avast! Antivirus protection
is active.
The web site talks about a CL-75 Yagi, which
operates as a dipole on 160 meters, and has
5 elements on 80. Is there also some different
antenna that is actually 3 elements on 160
meters? My Japanese is a little rusty :-)
Rick N6RK
On 8/19/2014 9:22 AM, Jim N7US wrote:
From the reflector of
His CL75 CX-M 5-element 80m yagi is on the other tower and still in use.
The new 160m antenna was built on order by Create.
73
Peter
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Richard
(Rick) Karlquist
Sent: Dienstag, 19. August 2014 19:29
To:
On Tue,8/19/2014 10:03 AM, Doug Renwick wrote:
I thought the consensus now is yagi antennas on 160 don't perform well (i.e.
OH8X) when compared to vertical arrays.
That is STRONGLY dependent on the height of the Yagi and soil
conductivity around the vertical antenna. A horizontal antenna
I had the opportunity to work K9DX many times when he was using this array,
he was one of the only stations who would hear me call an hour before my
sunset, and when he switched the array from EU to KH6 it was nothing but
amazing. To be honest I have never heard another ham array do as well,
I guess we’ll hear this 160 season from 7J4AAL. Living mid-path USA-JA affords
KL7’s the opportunity to receive both as W’s and others turn their attention to
JA. Why not give it a try if one has the motivation, real estate, and resources?
And about which antenna is better? His 160 beam on a
I am wanting a simple way of switching 3 or 4 pennants. Anyone done this?
Quote From K6SEE ... All four Pennants would be installed with their
points all adjacent to each other. Only one feedline would be necessary
and only one
transformer would be necessary, with the high impedance winding
Do we really care that skimmers aren't hooked up to antennas with
pattern and gain? One of the things in using VOACAP is knowing the
pattern of the RX antenna as well as TX. Omni pattern at RX removes RX
antenna bias. Why shouldn't we specifically use omni on RX, so that
any enhancement is from
Depends what are you expecting from Skimmer-RX-ANT setup.
If you want skimmer to find DX before the pack and looking for low angle
signals, then setup better use antenna with proper low angle vertical
pattern. Also getting true report when evaluating beach antennas with
low vertical angle,
Do we really care that skimmers aren't hooked up to antennas with
pattern and gain? One of the things in using VOACAP is knowing the
pattern of the RX antenna as well as TX. Omni pattern at RX removes RX
antenna bias. Why shouldn't we specifically use omni on RX, so that
any enhancement is from
I would not switch high impedance lines without very special precautions.
I really do not think it is worth the small parts savings.
- Original Message -
From: DGB ns9i2...@bayland.net
To: topband@contesting.com
Sent: Tuesday, August 19, 2014 4:38 PM
Subject: Topband: Switching
On Tue, Aug 19, 2014 at 11:24 AM, Tom W8JI w...@w8ji.com wrote:
Why would it matter?
The receiving antenna does not matter, provided it responds to the wave
angle at the receive site. It doesn't matter if it is loop, a 10 foot
vertical, or a 200 foot vertical so long as the antenna does not
Do we really care that skimmers aren't hooked up to antennas with
pattern and gain? One of the things in using VOACAP is knowing the
pattern of the RX antenna as well as TX. Omni pattern at RX removes RX
antenna bias. Why shouldn't we specifically use omni on RX, so that
any enhancement is
BC antennas have the elaborate radial system in order to get that
groundwave while the typical on ground ham vertical loses a lot of the
0-10 degree (or more) radiation. Go to the beach to get it back.or go
with elevated radials.
That just isn't factual at all. Radials under the
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