can get a phaser good on 10 MHz and
above... It is always matter of experiment!
73,
Martin, OK1RR
Dne 09. 10. 22 v 20:58 Jim Brown napsal(a):
On 10/9/2022 11:22 AM, John Pieszcynski wrote:
He also has reviews and comparisons of other RFI fighting products on
his
web site.
As part of project
to prejudice, bigotry, and narrow-mindedness..
Mark Twain, mods by DM4iM
73!
Martin DM4iM
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Doug, you read my mind. Thanks a lot, OC. I owe you a beer...
73
Martin, OK1RR
Dne 10. 03. 21 v 17:11 Glenn Wyant napsal(a):
Sorry to offend you Dougand Martin
However when another ham tries to tell me what I should or should not
Operate, well I take offense.
In this case Martin does
y attitude to this
mode is NEUTRAL, I HATE "FT8 only" radio users promoting themselves as
hams (radio amateurs).
73,
Martin, OK1RR
https://www.qrz.com/db/OK1RR
Dne 10. 03. 21 v 17:11 Glenn Wyant napsal(a):
Sorry to offend you Dougand Martin
However when another ham tries to tell me
.
What I am doing wrong?
73,
sincerely
Martin, OK1RR
Dne 09. 03. 21 v 20:41 Jim Brown napsal(a):
On 3/9/2021 6:36 AM, Martin Kratoska wrote:
Oh, FT8 should be proclaimed as illegal for DXCC (WAZ, WAS etc.) in
mixed categories.
This "mode" should be counted completely separated from t
Glenn (VA3DX),
BRAVO, I applaud!
So you claim the privilege to decide who should leave and who is allowed
to stay. And you will do it for ALL members of the list. You are a
brilliant character. The life with you must be a marvel.
Stay safe, 73
Martin, OK1RR
Dne 09. 03. 21 v 21:23 Glenn
robotized. This does DEFINITELY NOT qualify as ham radio. I am
very sorry that I don't have any better news for you.
73,
Martin, OK1RR
P.S. Any FT8 yes/no dispute is meaningless, at least in this mailing
list, isn't?
Dne 09. 03. 21 v 17:19 Chortek, Robert L. napsal(a):
Actually, it is ham ra
Oh, FT8 should be proclaimed as illegal for DXCC (WAZ, WAS etc.) in
mixed categories.
This "mode" should be counted completely separated from traditional
modes like CW or SSB.
73,
Martin, OK1RR
Dne 09. 03. 21 v 15:16 Ian Fugler napsal(a):
Hi, Dave
Zone 23 - JT5DX will be you
for his daughter, because for some reason his amazon
account wasn't working.
Somebody wants to make money , it seems. Do not reply. I told him to
p**s off.
Sorry if that has been discussed here before.
--
73, Martin DM4iM
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This one is much better, however you should build it yourself...
73,
Martin, OK1RR
Dne 17. 04. 20 v 12:59 Edward via Topband napsal(a):
Thank you all for your recommendations. Leaning towards this filter below. Any
objections before I pull the trigger?
http://kiwa-electronics.com/bcb
I applaud, Dave!
73,
Martin, OK1RR
Dne 11. 01. 20 v 6:02 Dave AA6YQ napsal(a):
+ AA6YQ comments below
It would seem that the new digital modes have re-invigorated ham radio, at
least activity wise. But if ham radio is so fragile that it cannot sustain in
the face of interest in a new mode
Quite few happy experimenters, lots of disgusted DXers.
73,
Martin, OK1RR
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Congratulations. Having been often operated in Zone 2, I wondered what your qth
was. I did 160 / CW from Havre Saint-Pierre a long time ago.
Martin VA2ZO VE2EDK
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datasheet here
http://www.ok1rr.com/files/rclamp2502l.pdf
73,
Martin, OK1RR
Dne 11. 10. 19 v 15:17 Martin Kratoska napsal(a):
I did quite lot of research about protective limiters. The best solution
found is to use the special TVS diodes RClamp2502L by Semtech which
incorporate surge rated
ts
needed. A new type of "RX front end saver" with Semtech's RClamp2502L is
in preparation.
73,
Martin, OK1RR
Dne 11. 10. 19 v 13:49 N4ZR napsal(a):
Array Solutions no longer handles the K9AY components, which actually
came from K9RU's Wolf RF Systems. It looks like the ICE l
What QST? Would be a copy available?
73,
Martin, OK1RR
Dne 21. 08. 19 v 18:24 K9FD napsal(a):
An excellent article is in an old QST called "station design for DX"
It mentions that 1 DB improvement in the station will provide a whole
new layer of DX signals. Very true.
In the avera
fp2019.net for Info.
--
Ohne CW ist es nur CB..
73, Martin DM4iM
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Gentlemen,
stop this annoying practice, please! Not all are ARRL members!
Thanks for understanding,
73
Martin, OK1RR
Dne 03. 08. 19 v 20:20 donov...@starpower.net napsal(a):
Hi Bob
The "how to" article is right here:
http://p1k.arrl.org/pubs_archive/63144
73
F
oops, the images didn't come thru. See here:
http://www.ok1rr.com/public/DHDL_OPT.NEC
http://www.ok1rr.com/public/antview.png
http://www.ok1rr.com/public/dhdl_opt-ver.png
http://www.ok1rr.com/public/dhdl_opt-hor.png
http://www.ok1rr.com/public/dhdl_opt-3d.png
73,
Martin, OK1RR
Dne 30. 06
That statement doesn't agree with my quick modeling
just read a few articles about DHDL antennas. One article states, the
cut off frequency where the antenna becomes useless is when the
overall length of wire reaches a 1/4WL...
my results attached
73,
Martin, OK1RR
CM Double Half-Delta
wires equals 63meters, which is already a lot longer than 1/4WL on 160m.
What did i miss?
--
Ohne CW ist es nur CB..
73, Martin DM4iM
_
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: Will we be better off with VP2E's or with
verticals and radial field? What do you think? Any hint welcome.
Other bands: Hexbeam.
Please visit www.fp2019.net
--
Ohne CW ist es nur CB..
73, Martin DM4iM
_
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Me too, regardless of the band. Anytime I tried to reach them they were
on FT8, not on CW...
73,
Martin, OK1RR
Dne 15. 04. 19 v 5:09 FZ Bruce napsal(a):
Sorry to hear you missed them. I also missed them as they were after
my sunrise, the many days that I listened.
73Bruce-K1FZ
Please vote in this new poll.
http://www.strawpoll.me/17426016
Many thanks!
73,
Martin, OK1RR
_
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ith
> a narrow bandwidth.
--
Ohne CW ist es nur CB..
73, Martin DM4iM
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Harris uses BNCs at this power level (3CX-1500A7) in RF-353 (AM-7224)
amplifier. They were used under harsh conditions for decades.
73,
Martin, OK1RR
Dne 08. 12. 18 v 3:07 Tim Duffy napsal(a):
When you look at an N connector, specifically the center pin - remember that
the N connector center
Some experience here:
http://www.bavarian-contest-club.de/projects/misc_projects/hfrelais.txt
73,
Martin, OK1RR
Dne 06. 12. 18 v 17:40 Sam Josuweit napsal(a):
Can anyone recommend a good general use relay for antenna switching in the
800-1000w power range? I know using power relays can
Did he same. Since this change no problem anymore. Confirming what Greg
says and can only recommend - throw away all PLs and go to N!
73,
Martin, OK1RR
Dne 06. 12. 18 v 5:00 Greg-zl3ix napsal(a):
I continue to be mystified by the fact that the amateur radio
community insists on using
-SPEZIAL15.htm
--
Ohne CW ist es nur CB..
73, Martin DM4iM
_
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WooW, very impressive! Thanks for sharing!
73,
Martin, OK1RR
Dne 01. 12. 18 v 17:09 Hank Garretson napsal(a):
I encourage you all to read W7LR QRZ page.
Top Band Exuberantly,
Hank, W6SX
On Sat, Dec 1, 2018 at 8:01 AM Tree wrote:
Many of you have probably noticed that W7LR has not been
straight up at least twice the height of
the tree plus the distance from start to endpoint plus a generous safety
margin before you go horizontal.
Ask me how i know..
--
Ohne CW ist es nur CB..
73, Martin DM4iM
_
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Es tu arrivé
Via mon mobile
Martin
Le 5 nov. 2018 à 12:00, topband-requ...@contesting.com a écrit :
Send Topband mailing list submissions to
topband@contesting.com
To subscribe or unsubscribe via the World Wide Web, visit
http://lists.contesting.com/mailman/listinfo/topband
or, via
Lee,
very interesting. Many thanks for that valuable info! BTW is there any
easy, cheap and quick method to test the J310, possibly without need of
dedicated complex 'test jig'?
73,
Martin, OK1RR
Dne 2.7.2018 v 02:39 Lee STRAHAN napsal(a):
Thanks Tony,
Agreed the 2N5109 will be around
was unable
to find some other details like IM, noise and gain characteristics in
high DR preamps for receiving purposes. Any experience?
73,
Martin, OK1RR
_
Topband Reflector Archives - http://www.contesting.com/_topband
Disagreed!
A mode is matter of person, not software.
73,
Martin, OK1RR
Dne 2.4.2018 v 01:42 Joe Subich, W4TV napsal(a):
On 4/1/2018 6:01 PM, cqtestk4xs--- via Topband wrote:
Every mode other than FT-8 requires a person to tune in a station
and to take part in the contact.
1) FT8 also
Let me hope that this is an exception and NOT a rule! CW is the DXer's
primary mode!
73,
Martin, OK1RR
Dne 31.3.2018 v 18:46 wb6r...@mac.com napsal(a):
7Q7EI - no CW on 160 - only FT8
Info here:
http://www.eudxf.eu/7q7ei-status-report/
<http://www.eudxf.eu/7q7ei-status-report/>
GL -
, Martin DM4iM
_
Topband Reflector Archives - http://www.contesting.com/_topband
ving birth ;-)
No mathematics, no electronics, no RF.
--
Ohne CW ist es nur CB..
73, Martin DM4iM
_
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..
73, Martin DM4iM
_
Topband Reflector Archives - http://www.contesting.com/_topband
to connect the
transformers?
Do i connect both sides of the transformers to ground?
If i get this to work, i have a 230m-235m long antenna with 5m of it
under ground.
Any input?
--
Ohne CW ist es nur CB..
73, Martin DM4iM
_
Topband Reflector Archives - http://www.contesting.com
of the setup? Will your K3 pick up
signals when you connect your TX-antenna to RX IN?
73, Martin
Am 13.01.2018 um 15:16 schrieb topband-requ...@contesting.com:
Message: 8
Date: Fri, 12 Jan 2018 12:44:25 -0800 (PST)
From: terry burge<k...@comcast.net>
To:topband@contesting.com, terry b
Topbanders,
if crossing a driveway above ground is not an option, is ist ok to bury
the beverage wire for, say, 20 feet?
--
Ohne CW ist es nur CB..
73, Martin DM4iM
_
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CRC (OK) should be OL7HQ this year.
73,
Martin, OK1RR
Dne 8.6.2017 v 20:59 OZ0J Joe napsal(a):
Dear all
The IARU HF Championship Contest 2017 will take place in the weekend 8 and 9
July 2016.
Together with Bob, N6TV I will create a multiplier file that fits to the
contest log
without the need of a logger or even a computer. Much more user friendly
for the occasional operator.
I'm courious what other topbanders say .
--
Ohne CW ist es nur CB..
73, Martin DM4iM
_
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,
Martin, OK1RR
_
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.
--
Ohne CW ist es nur CB..
73, Martin DM4iM / V31iM
_
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Try SARK-110
http://www.sark110.com/home
beats others mostly hands down.
73,
Martin, OK1RR
Dne 27.3.2016 v 21:08 dick.bingham napsal(a):
Greetings All
I am getting fed up with multiple trips between new antenna matching stations
and the
tx-source/VSWR and not converging on a good match
will be housed in a plastic box it will provide a
lot of additional CM suppression.
73,
Martin, OK1RR
Dne 30.8.2015 v 21:52 Mike Waters napsal(a):
How about back-to-back 1N4148 diodes (2 in series) across the RX path, and
a #47 incandescent lamp between those and the Beverage? That's what I do
here, among
It is here:
http://www.somis.org/
73,
Martin, OK1RR
Dne 30.8.2015 v 16:32 Larry napsal(a):
Measures (K6???) did a relay speed-up scheme for QSK on an SB220, I
don't remember the details but it was something like hitting the relay
with higher than usual coil voltage/current and it shortened up
my design and order the boards. Contact me on my private email:
mar...@ok1rr.com
or
mar...@centrum.cz
73,
Martin, OK1RR
Dne 29.8.2015 v 21:26 Jim napsal(a):
Martin is the latest incarnation of the infamous W7IUV preamp? and do you know
anyone that has PC boards before I reinvent the wheel
), but the
switching times.
I would recommend to take part in a group buy. AFAIK David, G3WGN,
organized a group buy/PCB fabrication of 80 units, possibly he may have
rests for sale.
73,
Martin, OK1RR
Dne 29.8.2015 v 18:15 Douglas Ruz (CO8DM) napsal(a):
Hi Martin, OK1RR,
I tried email direct
The latest version 6
http://www.okdxf.eu/files/preamp_r60.pdf
73,
Martin, OK1RR
_
Topband Reflector Archives - http://www.contesting.com/_topband
Is somewhere available a list of ferrite mixes indicating the frequency
where R=X?
73,
Martin, OK1RR
Dne 1.6.2015 v 17:31 Tom W8JI napsal(a):
You really need to do a single loop through the core windows and measure
the impedance with some sort of analyzer. Even an MFJ259B with a short
Topbanders,
thank you for your comments.
Looks like this wire was a good choice (in fact, i couldn't resist as it
was free), many use it for their beverages.
Thank you all.
Now back to the shop building that switchbox.
Hear you soon.
--
Ohne CW ist es nur CB..
73, Martin DM4iM
radio). TR4W with Wine works pretty well. In Win tested N1MM and
Logger32, both works well.
73
Martin, OK1RR
_
Topband Reflector Archives - http://www.contesting.com/_topband
A detailed analysis of the VE3DO Loop is on my web site:
http://www.ok1rr.com/index.php/antennas/8-the-ve3do-receiving-loop
A NEC file for further investigation is available via email upon request.
73
Martin, OK1RR
_
Topband Reflector
, please push me in the right direction.
Thanks.
Martin, DM4iM
_
Topband Reflector
the
transformers.
I believe the virus has gotten me...
--
Ohne CW ist es nur CB..
73, Martin DM4iM
___
Topband reflector - topband@contesting.com
, find the value for the termination resulting in a flat
swr-curve over the range 1.5Mhz - 10Mhz.
Correct?
--
Ohne CW ist es nur CB..
73, Martin DM4iM
___
Topband reflector - topband@contesting.com
with a separate
feedpoint in opposite direction?
At DL0WH it would be very inconvenient to place the wires side by side
as well as installing a separate bev.
--
Ohne CW ist es nur CB..
73, Martin DM4iM
___
Topband reflector - topband@contesting.com
it leaves the ground (at
the shack end), will this improve things?
--
Ohne CW ist es nur CB..
73, Martin DM4iM
___
Topband reflector - topband@contesting.com
es nur CB..
73, Martin DM4iM
___
Topband reflector - topband@contesting.com
easy. Why should it be any harder than 'opening up' ham gear
, e.g. cut out diodes? The Icom was USB only on all bands.
--
73, Martin
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
probably need a
dedicated room to store the collection. Reckon 1000 QSL cards is a pile
of ~2 ft height (~60 cm)...
73
Martin, OK1RR
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
~12 dB amp with 2N5109 and excessive input filtering (LP in
series with HP) similar to K9AY
(http://www.aytechnologies.com/TechData/FilterPreamp_160-80.pdf).
The MFJ design is definitely not a succesful attempt, W8JI tell why...
73
Martin, OK1RR
___
UR
3Mhz,
http://toroids.info
http://www.qrz.lt/ly1gp/amidon.html
--
73, Martin DM4iM
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
The link works if you manually add the missing letters you did not
copy/paste , e.g. ail to the word Detail
www.balundesigns.com/servlet/the-108/1-cln-1-High-Isolation-balun/Detail
--
73, Martin DM4iM
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
performance?
What else can I do?
--
73, Martin DM4iM
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
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