to his signal with 5w. We did some
tests 3 or 4 years ago. Now with RBN we can run some tests again next fall.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Hardy
Landskov
Sent: Monday, August 11, 2014 10:23 PM
To: Yuri Blanarovich
as well. The perception , and here you are 100%
right, the perception on the receiver end could be 10 to 20 d.
George has been very busy with is new business lately, however I will invite
him to run some tests next month, and present here the results.
My two cents.
JC
N4IS
One excellent example of use vertical array for HF on the beach was VP6DX
Ducie Island 2008
http://ducie2008.dl1mgb.com/equipment/index.php
Fantastic performance and results.
N4IS
JC
_
Topband Reflector Archives - http://www.contesting.com/_topband
_
Topband
wall warts.
So watch out is you have Comcast cable modem, it is necessary to choke the
cable and the AC cord with FT240 # 31. With this fix ,the noise dropped from
s8 to s0 but still audible at Doug receiver.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com
/dxsd1/dxsd1.php?f=0
http://www.reversebeacon.net/dxsd1/dxsd1.php?f=0c=ea7ppt=dx
c=ea7ppt=dx
just unbelievable!!
73's
N4IS
JC
show/hide my last filters
rows to show: showing spots for DX call: EA7PP
search spot by callsign
de dx freq cq/dxsnr
difference from 52dB.
You can download the raw data report from any time and any day for the last 5
years here
http://www.reversebeacon.net/raw_data/
Regards
JC
N4IS
show/hide my last filters
rows to show: showing spots for DX call: IQ9UI
search spot by callsign
de dx
Hi Jose
That was me. I was testing my new RX antennas comparing signals from Europe
during the contest . WOW you guys have the best site for 160m in Europe, I was
impressed with the signal and the reports on RBN, really signal as local signal
in US.
Regards
Jose Carlos
N4IS
-Original
fix other common mode noise, like cables not
grounded, bad grounding, rotor cable 120 ft long working like a vertical,
etc, It is necessary detune them all.
Regards
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Tom W8JI
Sent: Tuesday
N4IS
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of John
Kaufmann
Sent: Wednesday, December 17, 2014 8:59 PM
To: topband@contesting.com
Subject: Re: Topband: 8 circle: DXE vs Hi-Z
Good points about polarization. If the signals and/or noise
with
polarization rotation is providing return in new countries for him.
Regards
JC
N4IS
-Original Message-
From: JC [mailto:n...@comcast.net]
Sent: Tuesday, December 16, 2014 1:02 PM
To: 'Tom W8JI'; 'Lee K7TJR'; 'Bob Tabke'; 'topband@contesting.com'
Subject: RE: Topband: 8 circle: DXE vs Hi-Z
Hi guys
on his web page,
only after replacing the coax with twisted pair he was able to work 100's of
DX from a military base in YA on 160m.
The results using the new RX system varies form excellent to a perfect
disaster depending on the points above.
73's N4IS
JC
-Original Message-
From
why. By the way Robert
worked WAS on 160 with that antenna from DU7ET.
73's N4IS
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Milt --
N5IA
Sent: Thursday, December 18, 2014 9:56 AM
To: James Rodenkirch; Top Band Contesting
Subject: Re: Topband
will prefer to receive on the Yagi due its
directivity. You won't hear much on the vertical
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
_
Topband Reflector Archives - http://www.contesting.com/_topband
other, hard to pick one.
73's
JC
N4IS
-Original Message-
From: James Wolf [mailto:jbw...@comcast.net]
Sent: Thursday, December 18, 2014 1:30 PM
To: 'JC'; 'Top Band Contesting'
Subject: RE: Topband: Non-resonant receive antennas
Thanks JC,
I agree that the RDF number is significant
Hi John
What is the orientation of you low dipole? I assume similar to XZ0A it is
broadside N-S. In 2010 the SSW SSE propagation that I am calling TELP
started with solid copy for 2 weeks in October of XU7ACY around 11:15z and
at 2 weeks per month until March. 2011 was even better and Dec 29
patter useless.
This long answer is to validate your observation, resonant dipoles does not
provide any difference in receiver performance than your vertical or TX
antenna.
73's
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Richard
brass split bolt and cooper, you can find split bold that can be
buried. High temperature also change the tempera of cooper and with all the
different metals you are set up to failure, it just a matter of time to
happen.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun
don't blame them
we educate them by example.
We don't fight the pig because the pig will get you into the mud and he
loves it.
Gentleman's and gentlewoman's are here to stay!
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
into a enterprise carrier service $/min or $/KW.
ARRL is playing the full !
FCC soon we realize we have been lying about the nature of our service and
rethink why OR NOT to give us air wave space.
I think this is the END coming soon!
Regards
JC
N4IS
-Original Message-
From: Topband
surprised they installed dipoles, they may get a last minute approval but
wires were not allowed by USFWS.
That’s why there are no beverages on K1N plan.
http://www.navassadx.com/
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
Mike
Very interesting signal. I tuned on 3260 and the radar signal was very
strong and let's say unique, two bursts, one narrow band another wide band.
It turns out that I am testing several preamplifiers and the signal on 3260
was Intermodulation coming from the preamplifier. I removed the
Hi Eugene
I heard Toshi very well last year several days long path SSE/SSW around
11:30z. If you have a chance tell him to set some SSE/SSW RX antennas for
NA,
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Eugene
Popov /RA0FF
). During 28 days of operation we made a total of 36,148 QSO-s, of
which 3,425 were on 160 meters
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Ray Benny
Sent: Monday, February 16, 2015 1:53 PM
To: Milt -- N5IA
Cc: TopBand List
Subject
I think propagation should be taken in consideration on 160, nowadays has
been hard to work Europe form Florida, I don't remember propagation so
difficult like the one we are experiencing during this second peak if the
solar cycle.
K1N results on 160 m are just fantastic.
Regards
JC
N4IS
cost for minute? Share what ? you
r wallet?
Nobody is helping Ham with restriction to get into de air. It just about
money!
When you look at your wall you can see the value of your work. Does not
matter what it cost. Don't let it change!
My two cents
JC
N4IS
_
Topband
-20 and -40 with very deeps near -100.
I would say that TELP I open on 80m almost every day, we just don't have
much activity to understand it better.
Regards
JC
N4IS
- Original Message -
From: Tom W8JI w...@w8ji.com
To: Steven R Daniel, D.D.S. n...@comcast.net, topband@contesting.com
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
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
signal at the receiver
-13dBm (s9+60) and 13.820 MHz, -20 dBm , the preamp can/may handle it but
these numbers can overload any receiver if you don't adjust the gain. Also
the IM or PIM became a problem , the product of 1890 can be very strong.
Regards
JC
N4IS
-Original Message
a nearby country and his signal was always
good and easy to copy. Maybe Willi have the secret TX antenna that's work.
73.s
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
use of chokes.
Horizontal flag does help but needs to be high above ground.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Guido
Tedeschi
Sent: Thursday, March 19, 2015 11:37 AM
To: topband@contesting.com
Subject: Re: Topband: 9Q0HQ
is the commercial aspect of it, U$ /min air
time. The legality of it depends on the money behind each side. We can lose
our privileges with this precedent. It depends in how much money will in the
table. Best strategy is do not play it, if you don't want to live with the
doubt to lose it.
Regards
JC
N4IS
/equipment.html
73's
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike
Smith VE9AA
Sent: Friday, April 03, 2015 11:18 AM
To: topband@contesting.com
Subject: Re: Topband: verticals by the sea
Is there any advantage to using an inverted VEE
Just two years DU7ET worked WAS on 160m using an inverted V. Robert had a
good signal long path almost every day for six months. By the way , he told
me he will be active from DU7ET again starting is October.
73
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun
inverted L for TX.
Regards
JC
_
Topband Reflector Archives - http://www.contesting.com/_topband
a much better job them one 500ps that is not NPO.
My two cents
N4IS
JC
,
_
Topband Reflector Archives - http://www.contesting.com/_topband
.
With the HWF the 160, 80, 40 and 30m bands are quiet as 20m, it is a
difference experience.
Regards
JC
_
Topband Reflector Archives - http://www.contesting.com/_topband
NTENTIONAL QRMers) (Others, it is helpful to acknowledge and try to help.)
One of those "Stinkers" on the West Coast has been caught and punished
severely. There'll be others surely, as we perfect means of detection and
"coping". Additionally, "Stinkerism" has its own reward!!
value
of a radio. It gives you specific results for specific test conditions.
I believe DDC is the future, but we are not there yet.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
Hi Filipe
Zero , you should use material #31 or #77 , The core you have is not good
for low bands.
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Filipe
Lopes
Sent: Monday, October 12, 2015 8:46 AM
To: topBand <topband@contesting.
will be a specialist after reading this guide.
Regards
JC
N4IS
From: Filipe Lopes [mailto:ct1...@gmail.com]
Sent: Monday, October 12, 2015 9:52 AM
To: JC <n...@comcast.net>
Cc: topBand <topband@contesting.com>
Subject: Re: Topband: Commond mode choke for Beverage
Hello JC,
during the day time or during the night.
If you check the top contest results you can find a good reason why the top
stations are using only few Radios models.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
Thanks Bill
There is another video about Maunder minimum coming fast. As you can hear on
the video paid Scientist are paid to say so.
https://www.youtube.com/watch?v=MARk49q5FFY
73's
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Bill
there is real invasion of new HF services hungry for
broadband digital communication. Some future discussion will be only about
revenue and not about public safety, innovation, love for radio, all things
we care and hold us together for the last century.
Regards
JC
N4IS
-Original Message
(the new K16 IC
is just US$8) or any new design with delay and tail adjustment. Several
logging programs also have CW machine with delay feature.
My 20 cents.
N4IS
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Douglas
Ruz (CO8DM)
Sent: Sunday, August
on't waste your time if detuning is not on top of you to-do list.
Remove common node noise with chokes should be the second on the list,
Antenna and preamp is the last thing to get going.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf
relays must be 100dB or more in
isolation, and much more details that I won't cover.
It is not a weekend project.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
=%22harold+h+beverage%22#PPA3,M1
Yes, the HWF is really a Beverage antenna. Hehehe.
Would you send me more information so I can update my History of the Flag
antenna?
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Andrew Ikin
Sent: Sunday
the
difference in propagation and signal to noise ratio.
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Jim Brown
Sent: Monday, September 07, 2015 5:32 PM
To: topband@contesting.com
Subject: Re: Topband: [WARNING: A/V UNSCANNABLE]RE: Waller
.
>>
So in order to simply match the noise level of .446 uVolts with a signal you
need a signal impinging on this antenna that would produce 79 uVolts in an
antenna similar to the reference.
<<
I really don't understand you point can you elaborate it?
Regards
JC
N4IS
-Orig
I meant OFF and not ON for the internal preamp. I don't use internal preamp
ON.
The issue is most internal preamps are not designed for 160m, they need to
cover up to 50 MHz Even the ICOM Norton preamp does not have the muscle to
handle the signals level on 160m. If you turn << OFF >> you
n filter is a powerful tool for urban stations that
cannot be disregarded.
There is no commercial loop compatible or comparable to the HWF antenna, it
is a different ball game.
The results worth the time and money to implement it.
It all a good debate and we agree in most of it. Or at least we agr
om is right about the 40 db gain, gain means nothing, the NF of the system
is the only thing the matters.
Decrease your RF gain and increase the AF gain that you will hear better
than most preamp's can help.
N4IS
JC
_
Topband Reflector Archives - http://www.contesting.com/_topband
s not a very
popular solution. It is hard to run the cables inside the tower they say. As a
result RF is everywhere in the shack. No solution for that too.
I am just trying to help, there is no free beef regarding good RX systems.
73's
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
, (-1 in the formula) and with
a good ground conductivity the current in the wire and the current in the
ground will deeply cancel each other. That’s why any horizontal wire very near
the ground only receives along the wire and vertical polarized.
73's
JC
_
Topband Refle
tless days list of last 150
years.
http://icecap.us/images/uploads/Sunspotless_days.JPG
My expectation is that cycle 25 should better than 24 for low bands. But
just my expectation without scientific reasons.
73's
JC
N4IS
_
Topband Reflector Archives - http://www.cont
Some headphone can isolate noise very well. I like the Sennheiser HD280 , it
provide 36db isolation, but the best one I have is the MC5 from Etymotic ear
plug that can reach 42 db isolation.
73'
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
is no
check on day light QSO on LOTW.
73's
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
e is privacy. HRH
warranty nobody will possibly know you are using this fantastic technology.
WHY?? Open the list of users, be proud of it!
My 100 cents
N4IS
JC
-Original Message-
From: Herbert Schoenbohm <he...@vitelcom.net>
To: topband <topband@contesting.com>
Sent: Thu, Jan
everage towards US. The signal was amazing and
peaked 569 before their SR
So, there are plenty of gentlemen's on the band and the bad days with bad
propagation is over, we should have good propagation condition on 160m for
years to come.
73's
JC
N4IS
_
Topband Reflector
t wide.
I have lost most of three winter seasons due to power line and camper
trailer buzzes. I am not saying it is easy, but hope this will be
encouragement to the Little Guns out there.
73 / Doug / NX4D
>>>
(JC, I am not subscribed to Top Band Reflector. Can you add this?)
My station is quiet, I cannot detect any trace or light carrier doing the
test above.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
and this was after the
preamplifier.
I think the real world is here to stay and we need to review our best
practice for low band stations.
A SWL AM/SSB portable radio to sniff the new source of noise is a very
important tool for the Real World.
73s
JC
N4IS
p coming from my PC and PC LCD monitor just vanished, the box was open
in one side and not grounded.
The preamp was inside a TIM PLATE BOX used for EME shield with feedthrough
capacitor and chokes, but the steel galvanized box improved the shield a lot.
1.8 MHz is quite a diff
it a practical empirical result, you can try and check it by yourself.
Regards
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Richard
(Rick) Karlquist
Sent: Friday, March 04, 2016 12:38 AM
To: Topband@contesting.com
Subject: Topband: Comments
on
160m, Doug is 298 and I'm 283 now.
Regards
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of
donov...@starpower.net
Sent: Friday, March 04, 2016 12:04 PM
To: Topband@contesting.com
Subject: Re: Topband: Comments on High Performance RX Antennas
>that a BOG antenna is a tuned circuit not a traveling wave antenna. <
Hi Bruce, I am missing something here, can you elaborate on that statement?
73
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
and there are interesting aspects of each
antenna that deserved more time to elaborate, maybe next time with dedicate one
hour for each type of antenna.
The idea was to quantity what directivity can do for you in practical DXing.
Regards
JC
-Original Message-
From: Topband [mailto:topband-boun
SORRY am not getting into this PR.. PIXEL loop is a low RDF and LOW
performance receiving antenna, it is really snake oil.
I'm out of this discussion.
Regards
JC
>>
In tests, the Pixel magnetic loop provided at least 20 dB null off the
sides. From my experience, that is much
://www.youtube.com/watch?v=-4os4qcaT08
Regards
JC
N4IS
See you guys at Dayton.
_
Topband Reflector Archives - http://www.contesting.com/_topband
and fantastic fast!
The delay could be just a QSL process issue.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
Correct link for the pdf file, It has more slides not covered during the
time limited webinar
http://wwrof.org/wp-content/uploads/2016/03/WWROF-WEBNAIR-RX-Antennas-for-a-
Small-Lot-.pdf
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of JC
, and HWF since 2010.
Vertical polarization is not a solution for urban 160m stations to fight man
made noise.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
unlike due the small power used during the event
observed. Manmade echo are more likely to explain the echo.
73's
JC
N4IS
repeaters, Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Tim
Shoppa
Sent: Sunday, February 05, 2017 4:44 PM
To: on7eh
WF. It is observed and
documented in a daily base since 2009 when I started to use horizontal
polarization on 160m. A/B test is a fact not a proposed explanation of
ionosphere behavior.
73's
N4IS
JC
_
Topband Reflector Archives - http://www.contesting.com/_topband
disconnecting it from the coaxial cable using
a fast vacuum relay. This will to the same as my UNIPOLE. Just keep the T
floating during RX.
73
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
the feed line drops the noise 2 S units on the RX antenna.
Changing the impedance you can notice a change in the noise but only few
dbs.
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
Your feedline is about 350 feet. That is (with RG213 -velocity 0,66-) close
to 1 wavelength. With 1 wavelength feedline, the TX antenna is floating when
the feedline is open in the shack.
Just wrong once more. !!
_
Topband Reflector Archives - http://www.contesting.com/_topband
quality lab equipment, calibrated and two hours per measurement for each NF
reading. This assuming the temperature does no change during the test.
Your Noise Figure Uncertainty based on your video could be 5db or more.
73's
JC
N4IS
_
Topband Reflector Archives - http
but some QSB
and a quick shift towards west. Joe (WL7E) also reported poor condx to Japan
this morning, go figure!
We don't understand it ,but enjoy it for sure, Any comments on SSE/SSW are
welcome , this propagation mode is becoming more common.
73's
JC
N4IS
_
Topband
n mode is becoming more common.
73's
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
Hi Mark
Terminated loops are very old, the first patent belongs to Harold Beverage
Harold Beverage invented wide band receiver antenna, loaded loop in 1941
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/
US2247743.pdf
Most variations of this kind of antennas like
Sorry, the invention was in 1938 and the patent issued 1941
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of JC
Sent: Tuesday, December 13, 2016 6:28 PM
To: 'Don Kirk' <wd8...@gmail.com>; 'Mark Connelly' <markwa1...@aol.com>
Cc: 'topba
Hi Nick
The wire will reduce loss on the transmission line given a better match and
phase. In practice you can see change on the SWR and front back. If you have
a good ground you probably won't see anything changing.
Regards
JC
-Original Message-
From: Nick Hall-Patch [mailto:n
Hi Nick
I would say grounded both ends, don't need to be connected to the antenna
itself, right.
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Nick
Hall-Patch
Sent: Tuesday, December 13, 2016 11:42 AM
To: JC <n...@comcast.net>
Cc: 't
Hi Guy
I live in Ft Lauderdale city lot, 6 million people in 100 miles, very noise on
the vertical, zero noise on the Horizontal Waller Flag,
In the next 10 year every ham will use some kind or receiving antennas.
That’s what we do, innovation !! new things ..
73'
JC
N4IS
-Original
the two loops, if you
elevate the DHDL high far from the ground, the patter changes. The DHDL is a
ground dependent antenna, improving the ground with a ground wire bellow the
antenna can fix some ground problems.
My two cents.
73's
JC
N4IS
-Original Message-
From: Topband
and I decided to shot a quick
video about it.
https://top-beam.com/contest/power-line-noise-during-contest-no-problem-for-
wf300-system-on-160m/
When you control commom node noise a vertical loop can save the weekend.
Regards
JC
N4IS
_
Topband Reflector Archives - http
after your
sunrise, but just above the noise Q4.
Conditions are recovering from last magnetic storm and can be very good
during the weekend,
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Olof
Lundberg
Sent: Thursday, December 01, 2016
DON’T OPEN THE LINK IT NOT FROM ME. IT MAY BE A VIRUS!
From: 'topband' [mailto:topband@contesting.com]
Sent: Friday, December 23, 2016 8:33 PM
To: n...@comcast.net
Subject:
"Re: Topband: Radio World; Noise Floor; Where do we go from here?"
JC doc
<http://www.dun
ral station during 2016, I found signals above +10 dBm coming
from the TX antenna, and leaking everywhere into the radio. That's a lot of RF
energy. 10 mW.. of garbage..
Agree again with you about the narrow filter front end.
Happy Holidays!
73
JC
N4IS
This concept is very important
improve his
or her performance.
My two cents
N4IS
JC
_
Topband Reflector Archives - http://www.contesting.com/_topband
BD0AAI is zone 23 and likes JT modes and cw.
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of James
Wolf
Sent: Friday, March 17, 2017 3:49 PM
To: 'List-Topband' <topband@contesting.com>
Subject: Re: Topband: JT65 on 160
If I find s
Hi Bruce
V P 8 A L J beacon transmits with 30w and the antenna is a vertical but I
don't have more information about it. The frequency is 1804.8, I can hear
the beacon here in Florida 449 to 559 almost every night starting 01z. The
beacon has a long time between transitions.
Conditions is
to touch each other.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Lennart m
Sent: Monday, March 13, 2017 1:29 PM
To: k2av@gmail.com; 'Gary Schafer' <garyscha...@largeriver.net>; 'Jim
Kennedy' <kenned...@cableone.net>; '
TX antenna is detuned (become non resonant on the band you
are listening)
The answer for my question is "just one" always one system.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of K1FZ-Bruce
Sent: Tuesday, July 25, 201
have a
thunderstorm nearby.
The logistic to get the antenna at the tower most of the time cost more
than the antenna itself, repeating the installation several times a year is
not a good idea.
Regards
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf
Kevin
There is a well known
DLW Associates AM Broadcast Band Brick-Wall High Pass Filters
http://dlwc.com/
The 9 pole filter can be tuned for one of the deep nulls attenuate the station
you need by 70db or more, give DLW a call.
Regards
JC
N4IS
-Original Message-
From: Topband
, just a
machine to machine connection.
The human operator is an option, all communication could and can be done by
software as well.
Again it is just a personal thing.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
on the
vertical TX antenna, the same signal is +1db on my HWF. I can hear hundreds
of station on any given night on 160m using my HWF on digital modes. Zone
23, 24, 26 and 28 are active on 160m, WSJT, hundreds of YB stations are
active on 80m, digital mode.
I just don't like JT modes.
Regards
JC
N4IS
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