it would pick up noise as
well but I would think it would not be of an equal S-9 level.
Where did I go wrong in these figures. I must be astray somewhere.
Lee K7TJR OR
_
Topband Reflector Archives - http://www.contesting.com/_topband
After putting my conclusions here and a 2 1/2 hour power outage I had an aha
moment and found I did not account for 40 db properly.
The dipole without a preamp in the same location is just a few db higher
than the Waller with preamp and would not produce the signals I was
thinking of.
Lee
pictures.
Lee K7TJR
_
Topband Reflector Archives - http://www.contesting.com/_topband
.
Common mode isolation comes for free along with the design.
Lee K7TJR
_
Topband Reflector Archives - http://www.contesting.com/_topband
Mouser has them in other packaging.
http://www.mouser.com/Search/Refine.aspx?Keyword=HMC580ST89ETR
Lee K7TJR
_
Topband Reflector Archives - http://www.contesting.com/_topband
at the driving point to get the resistance up to 18 ohms would
work.
Parallel capacitance could be made up with extra length on the matching
cable.
Lee K7TJR OR
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Rune via
Dropbox via Topband
Sent: Monday, March
with a 180 HZ component.
I could not use 160 meters when there was any fog because of Corona
discharge.
Tree N6TR lived near this same line for a while. He even convinced them to
turn it off once to see if it was his problem as well.
Maybe he will jump in on this topic.
Lee K7TJR OR
-Original
contest and do a strength and
directional analysis in a narrow bandwidth after the fact to me is the
ultimate receiving system.
Lee K7TJR OR
I'd be interested in some project like that, but I'm afraid it would only
get to a general area. With maybe 3-10 idiots at any one time, and the 3-10
sure that will work with sky wave signals?
73
Peter
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Lee K7TJR
Being able to actually replay an entire contest and do a strength and
directional analysis in a narrow bandwidth after the fact to me
Tree lives in Boring Oregon. I.e. N6TR K7RAT one in same.
Lee K7TJR OR
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Jim Brown
Sent: Friday, January 09, 2015 11:46 AM
To: topband@contesting.com
Subject: Re: Topband: 160 Worked All States
On Fri,1
with.
Good luck, sometimes this is very difficult to find.
Lee K7TJR
Hi we just got QRV on 160 right before the SP and noticed AM BCI at 1800 kHz
and every 9 kHZ up from there. Since 9 kHz is the BC channel spacing here I
suspect two adjacent stations are mixing. Somehow somewhere. Maybe
the elements to make
the array flat. You must place them at ground level for each element.
Lee K7TJR OR
Ground: the area I have where I can put either a 4 sq tx array (this is for 80
by the way) or a possible 8 element (113’ diameter) RX array slopes from one
corner upward another 15’ over ~330
as many DX signals in my location with a low
horizontal as you would with verticals. I am pushing 200 countries on 160
having only used vertical receiving arrays.
Or put up both as one can never have enough low-band receiving antennas.
Lee K7TJR OR
-Original Message-
From: Topband
here.
Lee K7TJR
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Terry
Posey
Sent: Wednesday, December 17, 2014 7:57 AM
To: 'John Kaufmann'; topband@contesting.com
Subject: Re: Topband: 8 circle: DXE vs Hi-Z
Bravo, John! Well stated on all points
!
Lee K7TJR
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Tom W8JI
Sent: Tuesday, December 16, 2014 4:52 AM
To: Lee K7TJR; 'Bob Tabke'; topband@contesting.com
Subject: Re: Topband: 8 circle: DXE vs Hi-Z
Lee,
We probably will just have to disagree
.
All 8 element arrays do NOT work the same way.
Lee K7TJR
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Tom W8JI
Sent: Monday, December 15, 2014 7:24 PM
To: Bob Tabke; topband@contesting.com
Subject: Re: Topband: 8 circle: DXE vs Hi-Z
- DXE
an audible Morse ID, I wonder if QRSS
should?
Thanks everyone
Lee K7TJR
_
Topband Reflector Archives - http://www.contesting.com/_topband
Guess I did not Mention Dave's call is W0FLS
Lee K7TJR
_
Topband Reflector Archives - http://www.contesting.com/_topband
OOPs Wrong Reflector SRI Guys
Lee K7TJR
_
Topband Reflector Archives - http://www.contesting.com/_topband
with further
search at this time.
So we are looking for someone to step up here and do some driving
around. Hopefully someone with a directional loop.
Please forward this request if you know someone not on the reflector
but might be able to assist.
Thanks
Lee K7TJR
_
Topband
in WA will find this soon.
Lee K7TJR
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Tree
Sent: Monday, March 24, 2014 11:58 AM
Cc: TopBand
Subject: Re: Topband: another carrier
An excellent test signal for my north beverage. Hearing it down
The 1810.8 carrier is S5 here in the a.m. and is slightly West of North of
my QTH in central OR.
Lee K7TJR
_
Topband Reflector Archives - http://www.contesting.com/_topband
Preliminary look says somewhere around N7UA or Camano Island. I cannot
remember the ham on Camano Is call.
Anybody know either to have them check signal strength?
Lee K7TJR
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Nick
Hall-Patch
Sent
Thanks Bruce. I already have contacted a couple friends in that area.
By QRZ search of course.
Lee K7TJR
Try a QRZ search on zip code or city state.
Bruce-K1FZ
- Original Message -
From: Lee K7TJR k7...@msn.com
To: topband@contesting.com
Sent: Sunday, March 23, 2014 2:33 PM
Subject
One other consideration on radials above or below ground may be their effect
on your receiving antennas.
Lee K7TJR
_
Topband Reflector Archives - http://www.contesting.com/_topband
to believe the RDF
of the W system surely would be greater than anything we could imagine with
our RX antennas. Nor does noise figure appear to be a concern.
Or is my thinking corrupt?
Lee K7TJR
_
Topband Reflector
matching would help
this problem.
Lee K7TJR
_
Topband Reflector
Meant to say the delay error varies with frequency bottom line.
Lee K7TJR
The delay varies with frequency bottom line.
A combiner with a little more complicated impedance matching would help
this problem.
_
Topband Reflector
My original message was scrubbed sorry. It is important to use the combiners
with this array as Frank has. The simpler 2 transformer design may have more
of a tendency to have the pattern shift with frequency if that is important to
you.
YMMV
Lee K7TJR
_
Topband Reflector
I just posted some pictures of my take on F barrel quality
on the Hi-Z website. You might have to refresh the page
as it is just now posted. YMMV
Lee K7TJR OR
http://www.hizantennas.com/f_connector_quality.pdf;
___
Topband reflector - topband
and
other wire antennas on a narrow strip of ground closer to the ocean. I
believe he continues to use his control, linking and receive equipment
from the original design in a remote mode.
Lee K7TJR OR
___
Topband reflector - topband@contesting.com
It seems to me and I may be wrong but dont you get the tilted ground answer
just by tilting your vertical elements with respect to ground in Eznec?
From what I see with doing that the take off angle mostly follows the ground
with
at least 1/4 wave or less vertical antennas.
Lee K7TJR
the SNIF based on directivity of electrically small multi-element
systems. Personally I kind of favor this term as it self describes the
improvement. However it is still subject to the downfalls of being based
on noise from all directions.
Lee K7TJR OR
That's very true. Consider the K9AY
as close to the same as you can
will ensure that the pattern is optimum. The three element array controller is
not as lossy as the more multi-element controllers and so has a better noise
figure. 19 feet should work very well for you.
Lee K7TJR
I just received the shipment of fiberglass
Bob, I suggest you contact Peter XU7ACY and get his
take on working 160 DX from your area of the world.
In my contacts with him, receiving has been his
biggest problem.
Lee K7TJR OR
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
transformers too.
We likely are all saying the same things just a different way.
Lee K7TJR OR
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
I do not know the ferrite suppliers name. I buy these toroids
already wound. What I do know is it is a Chinese company.
Lee K7TJR
So who is this mysterious off brand ferrite supplier or is that a secret?
Carl
KM1H
___
UR RST IS ... ... ..9 QSB
It's been there all along guys.
http://www.lairdtech.com/Products/EMI-Solutions/Ferrite-Products/Ferrite-Toroids/;
Lee K7TJR OR
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
Oops direct link did not work thru go to that page then click on downloads for
Laird product specs.
Lee K7TJR OR
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
in the past.
By thorough evaluation in my circuits, I have found an off brand ferrite to
perform
well beyond my expectations. They were not chosen because of price. They were
also not chosen by what it says on the spec sheet.
Lee K7TJR OR
___
UR
. Also the power supplied to the relay box could inject signal
by the coil to contact capacitance. Do the signals go away if you remove
the power to the relay box while leaving the preamp active?
Maybe these tests will provide more clues.
Lee K7TJR
?
Lee K7TJR
Jack,
As the all band demand would increase the load from a 100 users to
thousands, I guess it would be up to the system capacity and if the
antennas are capable of the bandwidth requirement at one given moment
without compromise. Maybe it would be done by subscriptions
I just turned my webcam around and snapped a pix of the
proposed array location. How can I resist that low take
off angle on 160? Dreams, Ah.
http://www.k7tjr.com/culver_cam.htm;
Lee K7TJR
From: W0UCE
Sent: Saturday, February 11, 2012 10:10 AM
To: 'Lee K7TJR' ; he...@vitelcom.net
Cc
Paul you might want to be careful just shorting the
receiver input. This would also put a short on the
output of your preamp. This would have the preamp
blasted with RF from your TX while trying to feed a
short. My guess would be you could destroy
preamps doing this.
Lee K7TJR
exchanges.
I just got off the phone with a good friend asking advice
on a new antenna design. My parting comment to him
was You need to be thinking outside the box.
Folks, that is exactly what is going on here is thinking
outside the box and I for one have enjoyed it all.
Lee
a signal and
could damage your RX first! The ratio of the two levels
would indicate the crosstalk whether it is from the ground
posts or antennas.
Aren't they both just as bad?
Lee K7TJR OR
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
percentages of wave length spacing.
Sorry this is so long but did not know any other way to say it.
Lee K7TJR
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
. The bottom line here is that I wish I had taken a
look at local low-band propagation during the volcanic activity instead
of cleaning my gutters of the volcanic ash and replacing the motor in
my car from its ingestion of the ash.
Guess I missed another low band DX opportunity, darn.
Lee K7TJR
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