The 1026 has a built in pre-amp which may be helpful. The built in
antenna is easily removed by just unscrewing it from the feed through,
or not putting it on in the first place when you open the box.
Herb, KV4FZ
On 1/15/2015 1:20 AM, Mike Waters wrote:
I meant to say MFJ-1025, not 1026.
I meant to say MFJ-1025, not 1026. The 1026 has a built-in sense antenna
sticking out of the cover, IIRC. What is really needed --unless the noise
is right in your shack-- is a separate antenna that picks up the unwanted
noise MUCH better than the one built-in to the 1026.
73, Mike
www.w0btu.com
independently set level and phase for each sense antenna.
- Original Message -
From: "Rob Atkinson"
To:
Sent: Monday, January 12, 2015 12:39 PM
Subject: Re: Topband: Looking for 160m narrow beam RX advice - aninteresting
com
>1. I can see the case for an array of loops. Howe
>1. I can see the case for an array of loops. However, wouldn't it be less
>time-consuming --not to mention less expensive-- to just get an additional
>MFJ-1026 to effectively null the second noise source? Null out one noise in
>the first 1026, and then null out the second noise source in the secon
On 1/8/2015 12:12 PM, JC wrote:
I am going to try to get a horizontal loop aimed at 70 degrees up <
Hi Rick
It is not recommended to tilt and elevate the loop. There is two reasons it
Clarification:
70 degrees refers to the AZIMUTH that the loop will be aimed for.
It will still be in a h
-Original Message-
From: Richard (Rick) Karlquist [mailto:rich...@karlquist.com]
Sent: Thursday, January 08, 2015 2:36 PM
To: JC; 'topband'
Subject: Re: Topband: Looking for 160m narrow beam RX advice - an
interesting combination of ideas
On 1/8/2015 5:36 AM, JC wrote:
>
> &q
On 1/8/2015 5:36 AM, JC wrote:
"An array of loops is two loops for two directions.
Hi guys
The simple solution that is working very well since 2009 is the HWF. Why not
two horizontal loaded loops end-fire. Two identical horizontal loops see
the ground wave signal at the same way Va=Vb and
G/E Guys,
All subdivision Top Banders need an effective, highly directional
receive antenna that is minimally affected by local wires and metal, has
side and rear nulls to take care of interfering directional noises, may
be mounted adjacent to xmit towers and power lines, and rotated in a
sma
Hi Guys
I uploaded the video on YouTube on this link, DropBox is not working.
http://youtu.be/dNBekvzlxgM
Hi guys
The simple solution that is working very well since 2009 is the HWF. Why not
two horizontal loaded loops end-fire. Two identical horizontal loops see
the ground wave signal
"An array of loops is two loops for two directions.
Hi guys
The simple solution that is working very well since 2009 is the HWF. Why not
two horizontal loaded loops end-fire. Two identical horizontal loops see
the ground wave signal at the same way Va=Vb and because the 180 degree
out of ph
1. I can see the case for an array of loops. However, wouldn't it be less
time-consuming --not to mention less expensive-- to just get an additional
MFJ-1026 to effectively null the second noise source? Null out one noise
in
the first 1026, and then null out the second noise source in the secon
A couple of thoughts here, good or bad:
1. I can see the case for an array of loops. However, wouldn't it be less
time-consuming --not to mention less expensive-- to just get an additional
MFJ-1026 to effectively null the second noise source? Null out one noise in
the first 1026, and then null out
: "Lloyd Berg - N9LB"
To:
Cc: "Tom W8JI"
Sent: Wednesday, January 07, 2015 8:11 AM
Subject: RE: Topband: Looking for 160m narrow beam RX advice - an
interesting combination of ideas
Thanks for the input.
Yes, utilities are underground, located by the road - north side
-boun...@contesting.com]On Behalf Of Tom
W8JI
Sent: Tuesday, January 06, 2015 5:58 PM
To: Lloyd Berg N9LB; topband@contesting.com
Subject: Re: Topband: Looking for 160m narrow beam RX advice -
aninteresting combination of ideas
> Finding a single RX antenna system that nulls the neighbor noise sources
> at
On 1/6/2015 7:57 PM, Tom W8JI wrote:
"but it would be much more simple to build a directive antenna with
deep nulls to the sides"
This is what I would like to trybut what are the best antennas for
maximum side lobe rejection. I have looked at the charts so far and see
F/B and gain express
I have a strong source of 160 meter IX from another ham about a mile
away at a bearing 330 degrees. The key clix and pumping of the noise
floor make weak signal reception a real challenge at times. By using my
40 degree Beverage and a 3Khz roofing filter, along with turning the
pre-amps off an
Finding a single RX antenna system that nulls the neighbor noise sources
at 90 and 270 degrees is proving to be a challenge.
If the noise sources are really at 90 and 270, and you have 30 feet or more
for spacing at right angles to that, it should be fairly simple. Use a 180
degree out-of-phas
I have received many suggestions and ideas on this subject.
Finding a single RX antenna system that nulls the neighbor noise sources
at 90 and 270 degrees is proving to be a challenge.
Greg has offered an interesting idea that would integrate noise
canceling/nulling technology with a traditio
On Sun,1/4/2015 10:03 AM, Lloyd Berg - N9LB wrote:
I have read and re-read the recently posted 160m RX antenna information
presented on the Top Band Reflector and am sold on building a separate low
band receive antenna system in my front yard that is away from my TX towers
in the back yard.
One
IV3PRK has several interesting papers available as links from this page
http://www.iv3prk.it/TX3A-DHDL.htm
including one which compares both a single DHDL and a dual DHDL with a Waller
Flag.
Dan, AC6LA
_
Topband Reflector Archives - http://www.contesting.com/_topband
On 1/4/2015 10:03 AM, Lloyd Berg - N9LB wrote:
I have read and re-read the recently posted 160m RX antenna information
presented on the Top Band Reflector and am sold on building a separate low
band receive antenna system in my front yard that is away from my TX towers
in the back yard.
I am w
I have read and re-read the recently posted 160m RX antenna information
presented on the Top Band Reflector and am sold on building a separate low
band receive antenna system in my front yard that is away from my TX towers
in the back yard.
I am wondering if anyone is willing to give me input on m
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