JT is not CW and not SSB, why it is not a category by itself. SSB CW and
Digital.
DXCC JT modes.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Sean
Waite
Sent: Sunday, May 21, 2017 12:47 PM
To: Nick Maslon - K1NZ <k...@arrl.
. It is
necessity to keep all of them clean.
Performance is subjective, if you have nothing to compare you never know what
you are missing.
If you listen only vertical you are missing 50% of the band.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com
be hear 2
hours after sunrise, and sometime 2 hours before sunset.
Regards
JC
N4IS
-Original Message-
From: Lee STRAHAN [mailto:k7...@msn.com]
Sent: Monday, August 28, 2017 2:03 AM
To: JC <n...@comcast.net>; 'GaryK9GS' <garyk...@wi.rr.com>; 'Greg'
<n...@windstream
for me, but things are getting back
to normal. Bod will get his antennas very soon. Family, Work and Radio but
health was been some complex with my vertigo problem. I am really way behind
schedule here.
73’s
JC
N4IS
From: Lee STRAHAN [mailto:k7...@msn.com]
Sent: Monday
and 80m,
I hope you can fix that,
73
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of MR TREVOR
DUNNE
Sent: Sunday, November 12, 2017 7:21 PM
To: topband List <topband@contesting.com>
Subject: Topband: Relay info needed,
Hi All
So after I
Wes
I agree 100%; different protocol for two different species. I have ears and not
a USB port! My PC does.
N4IS
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Wes Stewart
Sent: Tuesday, November 28, 2017 10:50 PM
To: topband@contesting.com
de signal coming from the RX
antenna should be zero. Turn the preamplifier on, any noise you hear is not
coming from the antenna and it is common mode noise that you need to clean.
Choke can help a lot if you have a good ground connection.
73's
JC
N4IS
-Original Message-
From: Topband
Hi guys
Before anything else, don't trust MFJ269 reading, transmit with 10 w and
measure the SWR. It is very common the energy from AM broadcast stations
changes the real impedance reading on portable analyzers.
73's
N4IS
JC
-Original Message-
From: Topband [mailto:topband-boun
on towers or external metal
structures as well.
73's
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of
donov...@starpower.net
Sent: Thursday, November 02, 2017 10:47 AM
To: topband@contesting.com
Subject: Re: Topband: Rotator creating spur on 1820
Hi
r of weak signals without high performance RX antenna.
It point is :
You don't know what you are missing if you don't have anything to compare
with.
Get a high RDF RX antennas! You can't have enough.
The deep of cycle 25 can last 6 or more years, think about that. We are just
at the door.
JC
N4
for more openings during November/ December. The DX season is here
and very strong opening are possible every night.
Use your fingers and call CQ on 160m. A receiving antenna beaming North
will be very helpful for several years during the low part of the solar
cycle.
73's
JC
-Original Message
at way too.
The best way to know the future is to work on it. We should be back to call CQ
for the fun to work someone.
Call CQ 5 times and then turn your computer on, every day, if all of us do it
once a day, the band will be fun again.
73's
N4IS
JC
_
Topband Reflector Archi
stand why?
And if they don’t mind why should us care about it?
Ham radio is beautiful, enjoy all you can the way you can!
The best antenna is the one you have and not the big gun that you don’t have,
and can’t use.
73's
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
eed to read the screen, and decide how to click, well ... no much
challenge too. I don't like RTTY either, I made only one QSO since 1969.
73's
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
situation of aluminum joints becoming a strong noise source.
The same joints are not a problem on 80 or 40m, the issue is just around 2 MHz
Save yourself a lot of problems, aluminum an 160m antennas are not a good
combination.
73's
JC
N4IS
_
Topband Reflector Archives - http
by the dipole and irradiate vertical as well.
Always use both polarization on EZNEC to understand what the antenna is
doing.
73's
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Roger
Kennedy
Sent: Thursday, November 08, 2018 4:51 AM
impossible to avoid that. A Metal case protects the
board and avoid the external current to get into the board.
8- I can agree that the intensity of the signal and the common mode signal
leak could be 20 db, 30 db or more. However when you dig a weak signal it is
huge problem.
73'
JC
N4IS
ut we don't know why"
" In Theory, we know everything, but nothing works"
We combine Theory and Practice:
NOTHING WORKS, AND WE DON'T KNOW WHY!
73's
JC
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Edward
via Topband
Sent: Sunday,
end up below the MDS of my radio. As a
result it is common for me to use 50 Hz, Doug NX4D sometimes uses the SAFF
filter on the Orion II at 20 Hz, in both cases the weak signal at noise
level signal just pop up out of the noise.
73
N4IS
JC
_
Searchable Archives: http://www.contesti
, there is nothing new about
improvement of signal to noise ratio reducing the bandwidth. On the article,
the test was CW at 12 wpm and 9 Hz filter BW , no ring using WWV as time
source for the synchronization.
That was state of the art back in the early 70's, almost 50 years ago.
73's
JC
N4IS
wont perform if you do not detune
your tower.
No pain no gain!
73's
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Steve
Lawrence via Topband
Sent: Saturday, September 15, 2018 3:22 PM
To: Top Band List List
Subject: Re: Topband: Use shunt
original pdf Flag Theory, for the
long answer.
73’s
JC
N4IS
Flag Theory
Dallas Lankford, 1/31/09, rev. 9/9/09
The derivation which follows is a variation of Belrose's classical derivation
for ferrite rod loop antennas,
“Ferromagnetic Loop Aerials,” Wireless Engineer, February 195
NM7M's book titled "The Big
Gun's Guide to Low-Band Propagation" is in the 160m link.
The propagation on solar maximum is just different from solar minimum.
73's
JC
N4IS
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
The rhombic at W1AW was used on 20 meters IIRC.
Craig K1QX
_
Topband Reflector
If you plan to use the antenna on 160m you'll need 73 material. 43 works 3.8
up.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of James
Rodenkirch
Sent: Monday, August 05, 2013 2:20 PM
To: Shoppa, Tim; BY THE LAKE; topband
/2013 2:10 PM, JC N4IS wrote:
50/75 BALUN
Thanks for the detailed post, Carlos. BUT -- please let's use the right
words to describe things so that people understand what you're describing
and how it works. I strongly suspect that at least some of those things you
are calling a balun are really
Here is the K7AGE posts video of WLW's 1932 500,000 Watt AM transmitter
http://forums.qrz.com/showthread.php?398944-K7AGE-posts-video-of-WLW-s-1932-
500-000-Watt-AM-transmitter
Enjoy it
Regards
JC
N4IS
_
Topband Reflector
Bruce
I lost several resistors on my WF until I started to use NTE 3 W Metal on
the vertical Waller Flag and on the Horizontal WF I am using an array of 9
parallel/series.
http://www.nteinc.com/resistor_web/pdf/threew.pdf
Since that I never replaced it a single time in the last 4 years. The
KHz almost 100KHz up and down 1838. This is a growing problem.
73, JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike
Waters
Sent: Monday, December 30, 2013 1:31 PM
To: Tom W8JI
Cc: Topband
Subject: Re: Topband: Digital mode spurious issues
with a good Preamp from KD9SV and a Delta
Flag antenna using twisted pair. Without the RTR-1 the system would not
perform well as it did.
Just my two cents.
Regards
JC
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of James
Rodenkirch
Sent: Monday, January
Hi Carl and top-band lovers
I would like to mention Chapter 7.6 as well, polarization matching, and also
7.7 Fading. I started developing my HWF early 2009 and I think there is no
more to squeeze from it.
Here some update in respect of polarization on 160m. It is a game!, vertical
and horizontal
from HF or VHF
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
to Low Band Propagation . Magneto-iomic Theory pag 47
to 56 ; and Power coupling pag 57.
Thanks to Karl. K9LA, the book is available on his also must read site on
the 160m link
http://k9la.us/html/160m.html
Regards
JC
N4IS
_
Topband Reflector Archives - http
with the same RDF should perform similar.
The WF is a different antenna, it's a rotatable pair of loaded loops. Each
loop is open and loaded with a resistor.
Regards
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
plane does, and in this case it is the same, right?
73's
JC
N4IS
_
Topband Reflector Archives - http://www.contesting.com/_topband
This antenna was evaluated before and published in QEX May June 2005
Just google Broadcast CFA antenna
73's
N4IS
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Guy
Olinger K2AV
Sent: Thursday, April 10, 2014 2:43 AM
To: Bill Aycock
Cc: Michael
I owned a FT2100Z for several years and the power on 160m was the same as
other bands. I don't expect any design flaw. The original tubes are not
available anymore, the 572's tubes manufactures nowadays are different and
optimized for audio applications and does not perform at the same level as
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