of reactance, I would think! And on 160 the excess
loss in the coax from a bit of VSWR is really negligible!
GL!
73,
Charlie, K4OTV
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike
Waters
Sent: Friday, February 27, 2015 2:03 PM
To: topband
Maybe it was K0TT in Minnesota. I worked him earlier this evening.
73, Mike
www.w0btu.com
On Sat, Feb 28, 2015 at 6:55 PM, n0...@juno.com wrote:
Heh...heh...I don't normally work phone and I wasn't on the radio last
night. Must have been Slim. hi hi
73,
Charlie, N0TT
On Sat, 28 Feb
Can anyone suggest the best freqs. to tune our 160m inverted-L for the CQ
WW SSB contest this weekend?
The antenna is a long way from the house, andt's tough to do that in the
pitch dark and cold. :-)
It seems to me that in the past, it's been about where the CW contests
always take place, and
I've thought about making at least my Beverage antennas accessible over the
Internet, on a small scale and likely not more than a few times a month. By
far, the main appeal of that would also be the enjoyment of doing it. Once
this project was done, and a few hams used it, the main thrill for me
Jeff,
Thanks, but what did I do? Did you mean to say Mike, W0MU?
73, Mike
www.w0btu.com
On Thu, Feb 26, 2015 at 10:58 AM, Jeff Wilson jjw5...@yahoo.ca wrote:
Wow! I guess I also have to thank Mike W0BTU for my TI9/3Z9DX contact.
[snip]
To: topband@contesting.com, W0MU Mike Fatchett
Hello Guy,
I understand that the dielectric constant of snow is far higher than air.
But wouldn't some length of a BOG covered with snow at least hear better
than the mag and wire loop that he currently has?
73, Mike
www.w0btu.com
On Thu, Feb 26, 2015 at 5:50 PM, Guy Olinger K2AV
I can understand why people are upset about this. But the reality is that
no matter how upset we decide to be about this sort of thing, it's simply
going to happen more and more.
There's some truth to the saying, Don't worry, be happy. :-)
The rest of us can operate our stations the right way.
Bingo. Exactly.
And there's one thing that no one has mentioned yet: A station in a
contest, that's remotely-controlled over the internet, has the significant
disadvantage of time delays.
Oh, yes they do. I don't care how big and fast a pipe anyone buys.
Those delay times are not only
, 2015 at 10:36 PM, James Wolf jbw...@comcast.net wrote:
Mike,
That’s the plan, however it’s warm in the shack and bitter cold outside.
Thanks,
Jim – KR9U
*From:* Mike Waters [mailto:mikew...@gmail.com] *...*
Why don't you lay a 200' wire on the ground, aimed towards your area of
interest
Thank you for sharing that, it looks like a low-cost solution in some
situations.
But I'm not sure whether that would hold up here. Once in awhile, the power
company drives their heavy bucket trucks over my land. And people that I
hire to brush hog my 'pasture' have heavy tractors. That's what
Thanks. I see what you mean! That's not much of a pattern.
I'm far from being an NEC expert. But everything I've ever read indicates
that ANY version of NEC is simply not yet advanced to the point where it
can model wires close to the earth with any degree of accuracy.
Why don't you lay a 200'
I have never heard of anyone burying a BOG. The radials could be buried an
inch or so, but a BOG should lay on the ground or slightly above. 2 ft. is
two feet too deep.
About 200' is a common length for a BOG on 160.
73, Mike
www.w0btu.com
On Sat, Feb 21, 2015 at 6:51 PM, James Wolf
is the problem.
In practice, I would lay it on the ground and after a few years, it would
be just below the surface.
Hmmm. BBG – Beverage Below Ground.
Jim – KR9U
*From:* Mike Waters [mailto:mikew...@gmail.com]
*Sent:* Saturday, February 21, 2015 8:26 PM
*To:* jbw...@comcast.net
*Cc
I have some RG-6 coax inside some 1/2 PVC rigid conduit laying on the
ground. It feeds my 160m inverted-L ~250' behind my house. But whenever a
heavy tractor or truck drives over it, it breaks the conduit in two and
damages the coax.
If you are speaking of Sealtite flexible conduit, that'll
Countless hams run their Beverages through woods. It's not going to hurt at
all. Just do it! :-)
http://www.w0btu.com/Beverage_antennas.html
73, Mike
www.w0btu.com
On Sat, Feb 14, 2015 at 11:35 AM, Charles Yahrling cfytech2...@gmail.com
wrote:
Is it safe to say that an E-W Beverage or a
Beverage antennas are so good that even if they needed repairs every single
month, it would still all be worth it! I've had to repair them from time to
time for various reasons, but not once did the thought ever occur to me
that they're too much trouble. You'll understand after you have one.
I
/namazu.cgi?query=%22vertical+on+a+beach%22submit=Search!idxname=Topbandmax=100result=normalsort=score
73, Mike
www.w0btu.com
On Fri, Feb 13, 2015 at 10:04 AM, Mike Waters mikew...@gmail.com wrote:
Here's the thread:
Modeling the proverbial 'vertical on a beach'
http://lists.contesting.com/archives
/msg00165.html
The first one is the one that I was thinking of. It's long, but worth the
read, IIRC.
73, Mike
www.w0btu.com
On Fri, Feb 13, 2015 at 9:54 AM, Mike Waters mikew...@gmail.com wrote:
Rich,
Based a number of others' experiences that I've read, a vertical that is
very close to the ocean
You didn't say how long the horizontal portion of your inverted-L was. If
we knew that, that would help us help you. :-)
FWIW, W1BB himself said that an inverted-L could have a vertical section of
only 25 feet, and still be worthwhile.
73, Mike
www.w0btu.com/160_meters.html#inv-l_antenna
On
for...heh...heh..hopefully for good. Communications from drug smugglers
comes to mind. It would be very helpful if we Hams had access to that
system (or maybe build one for our use?).
On Sun, 8 Feb 2015 14:11:42 -0600 Mike Waters mikew...@gmail.com writes:
I didn't see the ARRL article, but I have
I know this is about a long DC line, but I thought I would add something:
All the experiences I have ever read by hams living near HV AC transmission
lines carrying (for example) 69 kV or more seem to indicate that RFI seldom
is radiated from them.
Instead, it's the local lines on wood poles
...@jeremy.qozzy.com wrote:
And couple a lot of unwanted noise to the coax?
From: Mike Waters mikew...@gmail.com
Sent: Friday, January 30, 2015 12:33 PM
To: topband topband@contesting.com
Subject: Re: Topband: Tensioning of RG58 coax for 2-way Beverage
CATV F-6 coax with a messenger line can be had
Thanks for all the replies!
The RBN is a good idea, and I use it occasionally. But I don't think
everyone uses it. For one thing, it takes more CPU power, RAM, and
bandwidth than what everyone has.
I tried to spot myself on a cluster, but apparently self-spotting is
disabled. I don't know how
information in the Google search I suggested.
73, Mike
www.w0btu.com
On Sun, Feb 8, 2015 at 2:11 PM, Mike Waters mikew...@gmail.com wrote:
I didn't see the ARRL article, but I have researched this on the Web. Type
these words into Google:
fcc hf df
The first hit is a map of where they all
I didn't see the ARRL article, but I have researched this on the Web. Type
these words into Google:
fcc hf df
The first hit is a map of where they all are. Most are unmanned. They are
all linked to a single manned command center.
I'm not certain what type of antennas they use. I studied the
Thanks. And it goes without saying that self-spotting during a contest is a
no-no, too. :-)
73, Mike
www.w0btu.com
On Sat, Feb 7, 2015 at 6:42 AM, Cqtestk4xs--- via Topband
topband@contesting.com wrote:
I agree. ... Now as for self spotting on 15 at 1300Z, that is a no-no as
far as I am
Pardon my ignorance, but if there is little or no activity on 160, what
harm does spotting one's own CQ DX do? I know it's frowned upon, but I
have never understood why.
I called CQ DX for awhile this morning before dawn, and no one answered. I
know that propagation was decent, because I worked a
Well said. I'm glad Milt posted what he did, but I'm tired of hearing all
of this complaining.
Ham radio is supposed to be fun. Let's choose happiness, instead of
continually hitting the 're-play' button so we can stay mired in the
unchangeable past.
BTW, K1N was almost S9 here at 4 AM local
Eddie, you beat me to it! :-)
Just one person out of line on 160. I know that's one person too many, but
compare that to the breathtakingly insane level of deliberate QRMing of K1N
on the other bands!
www.eham.net/ehamforum/smf/index.php/topic,101266.0.html
73, Mike
www.w0btu.com
On Tue, Feb 3,
This is what I use:
www.w0btu.com/W0BTU-broadband-preamps.html
73, Mike
www.w0btu.com
On Mon, Feb 2, 2015 at 3:08 PM, Andy YO3JR andyru...@gmail.com wrote:
Can someone recommend me a good preamplifier for the beverage antennas on
80/160m?
I found on the market a few like Z10043 Norton
In case anybody missed it:
CQ 160-Meter Contest, CW: 2200Z, Jan 23 to 2200Z, Jan 25
www.hornucopia.com/contestcal/weeklycont.php#5798
www.cq160.com/rules.htm
73, Mike
www.w0btu.com
_
Topband Reflector Archives - http://www.contesting.com/_topband
From my perspective it is. However, I can appreciate that it was even
better in years past.
73, Mike
www.w0btu.com
On Fri, Jan 23, 2015 at 9:18 AM, Bob Garrett rgarre...@comcast.net wrote:
Ken and others, at least last evening, there was very few times when
somebody called on the frequency
Dave, this sort of immature behavior on the low end of 160 is rather
unusual, especially when we compare this sort of occurrence to the higher
HF bands. You're certainly correct that this sort of behavior is getting
worse, and not just in amateur radio. But don't give up on 160 because of a
few
You bet they're nasty and strong! I sure hope you're not trying to
manhandle those critters by yourself?!
Google 'raccoon damage' and click Images at the top. Besides showing how
destructive they can be to property, there's several photos there of people
with their noses either partially or
There are other repellants, also. I've used a nylon stocking full of human
hair, Liquid Fence (animal specific), and human urine. Details at
www.eham.net/ehamforum/smf/index.php/topic,100311.0.html
73, Mike
www.w0btu.com
On Wed, Jan 21, 2015 at 11:02 AM, Gary Smith g...@ka1j.com wrote:
There
This rule --while a good idea with the best of intentions-- was almost
certainly intended to help prevent cheating by using a remote receiver FAR
from a contest station's QTH. Much farther than 100 miles. And owned by
someone else.
So, how could using one's own, private remote receiving setup
What's the simplest way of setting up a remote RX site via the Internet?
Below is part of a question that I posted awhile back on an eham.net forum.
I was considering sharing my 580' long Beverage receiving antennas via a
Web SDR page, which can cover 360 degrees of the compass (on 160, at least)
IIRC, the dielectric constant of pure ice is over 80. :-) While looking it
up, I found that it varies with frequency, temperature, and any dissolved
content.
http://nvlpubs.nist.gov/nistpubs/jres/64D/jresv64Dn4p357_A1b.pdf
This begs the question, Exactly how much might the performance of a
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
It's good, but
www.swpc.noaa.gov/communities/space-weather-enthusiasts
is better. That one also has the 5-graph ACE real-time solar wind chart.
73, Mike
www.w0btu.com
On Thu, Jan 8, 2015 at 8:07 AM, bruce whitney via Topband
topband@contesting.com wrote:
Has everyone allready seen this new
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
I've been watching NOAA's new 5-graph solar wind chart on
www.swpc.noaa.gov/communities/satellites . The sun has been very active
with little letup. Maybe that's the reason.
It took quite of bit of getting used to --and I'm still learning-- but that
5-graph chart is a really good indication of
Paul,
If you had trouble with an oxyacetylene torch, then I'll bet you used
silver-bearing (tin-copper-silver) solder, which melts at well under 700
degrees. (In that kind of solder, the small amount of silver is added
mainly to lower the melting point a little). That's commonly referred to as
The silver solder I have here does have a high silver content, yes. :-)
It also contains cadmium, which shouldn't be used indoors because the fumes
are toxic.
It's 1/16 diameter round wire. When it's gone, I'll probably replace it
with a cad-free alloy.
I mostly heat the work (that is, the
If you're in the mood, I hear a contest on 160 in progress right now.
http://www.hornucopia.com/contestcal/weeklycont.php?mode=customweek=current
73, Mike
www.w0btu.com
On Tue, Dec 30, 2014 at 7:08 PM, Mike / W5JR w5jr.li...@gmail.com wrote:
So why couldn't the Stew be tonight. Zero QRN
Well, I guess that's one way to hold on to a run freq when nature calls. Or
when the XYL wants to go to dinner, or whatever.
Maybe that ought to be grounds for disqualification.
73, Mike
www.w0btu.com
On Sun, Dec 28, 2014 at 8:45 PM, Gary Smith g...@ka1j.com wrote:
Oh yes, another vent I
Gentlemen,
If anyone happens to hear me calling a station way off his TX frequency
--or on top of your run freq(!)-- during the Stew Perry, kindly send me a
quick e-mail telling me so. (And you don't have to be nice about it. :-)
The time, freq, and amount of freq offset would also be
Thanks to the many who have replied off-list suggesting what the problem
might be. So far, so good, and no problem. Back to the contest, CU there.
73, Mike
www.w0btu
_
Topband Reflector Archives - http://www.contesting.com/_topband
Has anyone heard of RFI from computer LANs that use the house wiring in
lieu of either CAT5 cable or 2.4 GHz WiFi? It sounds to me like BPL
(Broadband over Power Lines) on a smaller scale. It also sounds like
trouble, especially if you have a close neighbor with one of these pieces
of junk.
From
That's what I thought.
...some importers don't care I think this might be something that
the FCC would go after, if it was reported with full details; make model,
QTH, audio recordings, etc.
I was not aware of this until I ran across that eHam post.
73, Mike
www.w0btu.com
On Thu, Dec 25,
It did for me. I have no idea what it is, though. :-)
https://www.google.com/search?client=ubuntuchannel=fsq=BevFlex-4ie=utf-8oe=utf-8
73, Mike
www.w0btu.com
On Mon, Dec 22, 2014 at 2:40 PM, Phil Clements philcleme...@centurylink.net
wrote:
I am looking for info on the BevFlex-4. Google did
Here's a list I compiled two or three years ago:
http://www.w0btu.com/AM-longwaveStations.html
73, Mike
www.w0btu.com
_
Topband Reflector Archives - http://www.contesting.com/_topband
K3PGP -1915 Mhz Radar - Conclusion and some new regulations
http://www.topbandhams.com/tech-page/31-k3pgp-1915-mhz-radar-conclusion-and-some-new-regulations
Just found the above on
http://forums.qrz.com/showthread.php?460061-160-Meter-Unknown-Pulse-Signalp=3356755
73, Mike
www.w0btu.com
I found something interesting on http://www.codar.com . Take a look at the
changing graphic on the main page, which shows different places in the
world where these are installed.
You need to watch it awhile, because every so often a new location appears
in the sequence. Among other locations, I
Who lives in that area that might be able to investigate? That sounds like
the logical next step.
It wouldn't necessarily have to be a ham who is active on 160.
73, Mike
www.w0btu.com
On Tue, Dec 9, 2014 at 11:10 AM, Steve ve...@shaw.ca wrote:
About the only North American land in that
Hi Mike,
On Tue, Dec 9, 2014 at 11:11 AM, Mike Coreen Smith VE9AA
ve...@nbnet.nb.ca wrote:
I made a tool for installing radials in my VERY rocky soil
You have my attention, since my soil also has lots of rocks. You don't have
a photo, do you?
I have elevated radials under my inverted-L,
My thoughts exactly when I read K1FZ's post.
We need to find out all we possibly can about this, not sit on our hands
and hope it will go away somehow.
73, Mike
www.w0btu.com
On Tue, Dec 9, 2014 at 2:17 PM, Bill Aycock billayc...@mediacombb.net
wrote:
I do remember theloose lips slogan, but
From SW Missouri, heard on my 580' NE Beverage, pulses to S7 (preamp off),
1130 UTC (5:30 CST).
I can hear it from 1.900 to 1.930 on the IC-765's 2.4 kHz LSB filter.
Switching to AM on 1.915 (over S9), the signal has a rough pulsing tone,
but I didn't try to measure the tone's frequency.
@ 1145
Hello Mike,
To reply to the original thread, simply put *topband@contesting.com
topband@contesting.com* in the To: field, and don't edit the subject.
Anyway, my best guess this morning was Iceland. Can you post the links to
those social media sites here?
73, Mike
www.w0btu.com
On Mon, Dec 8,
Hello Charles,
I don't think you'd bother anyone between 1800 and 1810.
About all I ever hear there is RTTY, some domestic QSOs, and W1AW.
Thanks for asking! :-)
73, Mike
www.w0btu.com
On Mon, Dec 8, 2014 at 7:48 AM, Charles Yahrling cfytech2...@gmail.com
wrote:
I'm a 160M wanna-be that's
There seems to be some recordings at
www.eham.net/ehamforum/smf/index.php/topic,100298.0.html
73, Mike
www.w0btu.com
On Mon, Dec 8, 2014 at 11:56 AM, K2RS k2rsonl...@comcast.net wrote:
a friend who's in the ARRL Intruder Watch group forwarded me an e-mail
this morning informing him that IW
After playing in the ARRL DX contest in the early morning hours, it looks
to me that what is *really* needed is a small DX window somewhere in the 15
kHz JA segment 1810-1825. Heck, it could even be less than 5 kHz wide.
From my QTH in the central USA, I could copy JAs who were working NA
did work quite a few US stations being not very loud but ...they wera
listening in all directions at the same time. Hope to catch u as well.
73
Len
SM7BIC
-Ursprungligt meddelande-
Från: Topband [mailto:topband-boun...@contesting.com] För Mike Waters
Skickat: den 6 december 2014 15
Chuck,
SWR and return loss are related. Check these out:
http://en.wikipedia.org/wiki/Return_loss
http://www.minicircuits.com/app/DG03-111.pdf
What are you modeling?
73, Mike
www.w0btu.com
On Fri, Dec 5, 2014 at 2:29 PM, Charles Yahrling cfytech2...@gmail.com
wrote:
Just getting started
One thing that would affect RF conductor resistance is the paramagnetic
properties of the conductor. If, for example, it was bare iron or magnetic
steel wire, then we would have eddy current losses. And those losses could
very well be much larger than the ohmic losses measured at DC.
The wire
Thanks for all the replies. I'm finally beginning to realize that the DX
Window was for an earlier time when 160m band allocations were much
different.
I see that there's nothing about any window for the Stew at
http://www.kkn.net/stew/stew.rules.txt
I assume that unless contest rules explicitly
Thank you, Petr. Some of this is mentioned at
http://www.pacificdxpedition.com/download/160m-frequencies.pdf which I have
hanging next to my radio. The 1830-1835 DX Window is on that chart, and
that's one of the reasons I had this stuck in my head. :-)
73, Mike
www.w0btu.com
On Tue, Dec 2, 2014
... no
offsets.
Mostly people use conductors that are not so simple to calculate.
73, Mike
www.w0btu.com
On Wed, Dec 3, 2014 at 2:20 PM, Mike Waters mikew...@gmail.com wrote:
One thing that would affect RF conductor resistance is the paramagnetic
properties of the conductor. If, for example, it was bare
It sure IS broadbanded. Couple of questions:
On Thu, Nov 20, 2014 at 10:11 AM, Joe Galicic gali...@comcast.net wrote:
The ground is connected to the existing ground system for the old L.
Can you describe this?
I get a 1.1 SWR reading from 1.8 to 1.9 before it moves up to 1.3 and
slightly
Have you considered elevated radials? Four of them 10' high (or even two!)
would be MUCH better than what you have right now.
My 160m Inverted-L:
http://www.w0btu.com/160_meters.html#inv-l_antenna
73, Mike
www.w0btu.com
_
Topband Reflector Archives -
I just tuned across the low end of 160, and nothing (except one RTTY
signal)! Is my receiver broke? I expected to hear at least SOME CW.
I did just get struck by lightning a few days ago; maybe I have a problem I
didn't know about. But I hear RCR on AM loud on 1860. And yes, I do believe
the UTC
Hi Jim,
So THAT'S it! It's the ARRL's fault! :-)
I didn't realize that once per band was missing from this contest.
Thanks and 73,
Mike
www.w0btu.com
Amen. I get on 160 as often as I can - trying to get WAS on Top Band ...
Some contest activity would be nice. Maybe ARRL should have a category
I couldn't find a thing there about 160 (or any other band). Did I miss
something?
73, Mike
www.w0btu.com
On Wed, Oct 22, 2014 at 1:27 PM, wb6r...@mac.com wrote:
A new one for many on 160 coming in January. I’m sure the team will
welcome any and all support.
http://kp1-5.com/new/news.htm
:
The KP5 operation had almost 2000 160 meter contacts, so we can be sure
they will have a big presence on the low bands, including 160!
Bob/AA6VB
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike
Waters
Sent: Wednesday, October 22, 2014 11:38 AM
You bet it is! Those prices are the best I've seen in some time.
73, Mike
www.w0btu.com
On Wed, Oct 22, 2014 at 2:55 PM, Carl k...@jeremy.qozzy.com wrote:
Good link Frank, thanks.
_
Topband Reflector Archives - http://www.contesting.com/_topband
I started to write a similar reply myself about 30 minutes ago, and then I
noticed what he was doing with the WD-1. :-)
I didn't do any math, but just looking at Jim's photos (1 attached) and
text, perhaps the DXE transformers he is using are close enough. Note that
Jim has two runs of WD-1
The pre-Stew 160 contest is this weekend. And from what I can tell from
several WX forecasts, the 48 states will be lightning-free this year! :-)
Note: the correct dates are at http://www.kkn.net/stew/ BUT the dates
listed in the rules are for last year's.
73, Mike
www.w0btu.com
This relay looks exactly what I was looking for to remote-switch my 160m
inverted-L to other bands, because it will withstand a lot of voltage. From
the PDF:
High insulation
Insulation distance (between coil and contacts): 10mm min.
Dielectric strength: 5KV
Surge strength: 10KV
73, Mike
Thanks for the advice. I've already calculated the voltage at the feedpoint
of my 160m inverted-L on 80m at 1500w (using EZNEC), and it's only a little
over 3 kV.
I just popped the cover off a little Omron PCB-mounting relay that I forgot
I had, rated at 10 kV. The spacing between the SPDT
Between contact and coil. I just took 2 photos:
http://www.w0btu.com/files/misc/Omron_relay_G2R-1-E-T130/
On Thu, Oct 9, 2014 at 12:20 PM, shristov shris...@ptt.rs wrote:
Mike Waters mikew...@gmail.com wrote:
I just popped the cover off a little Omron PCB-mounting relay that I
forgot
I
Ahhh yes. Thanks. I didn't think of that. :-)
73, Mike
www.w0btu.com
On Thu, Oct 9, 2014 at 12:33 PM, Tom W8JI w...@w8ji.com wrote:
... I was thinking of seriesing the contacts on two of these relays, if
necessary.
If you series the contacts the voltages across open contacts divides by
A potential problem with that relay is that it is not sealed. Moisture
could get in, condense, and freeze. And if ice forms in the wrong place,
the relay might not operate. I've had that happen before, and during a 160
contest.
73, Mike
www.w0btu.com
On Thu, Oct 9, 2014 at 1:17 PM, Mike Waters
,9/29/2014 2:31 PM, Mike Waters wrote:
It's 6 turns of F-6 coax through four 2.4 OD Fair-rite #31 cores ($7 each
from Mouser), per K9YC's PDF.
My pdf calls for a lot more turns than that for 160M, but it ain't broke,
don't fix it. :)
73, Jim
_
Topband Reflector Archives
You might be interested in this post, Jim: http://owenduffy.net/blog/?p=2501
... The Signalink USB turned out to be a disappointment for several
reasons but the main one was that the noise floor was almost 20dB higher
than an ordinary $10 Creative desktop sound card. ...
QST recently carried a
Yesterday I decoded a Chinese station on 30m WSPR, at a level of -28. From
http://wsprnet.org/drupal/wsprnet/spots:
2014-09-02 21:34 BZ1UIF 10.140268 -28 0 ND81 5 W0BTU EM37 17566
158
According to something you said in your interface PDF, the -28 seems to
indicate that I already have a
Thanks for all the additional advice, Gentlemen. I understand about audio
levels, filtering, etc. :-)
My sound card (old Creative labs unit, IIRC) interface is just a couple of
audio transformers removed from old 56k PCI telephone modems, with some
pads and pots. I'll check out your interface
Is anyone using WSPR or WSPR-X on 160m? It just caught my attention. Looks
like a great tool to see if any DX paths are open, and motivate one to call
CQ DX when they are.
WSPR home page:
http://www.physics.princeton.edu/pulsar/K1JT/wspr.html
Who's on, propagation map
- Text:
Thanks for the input. I have WSPR 2.12 installed and working on 30 meters
in RX-only mode. I see it's uploading my spots to wsprnet.org. If all goes
well, tonight I'll switch to 160.
73, Mike
www.w0btu.com
_
Topband Reflector Archives - http://www.contesting.com/_topband
How well does WSPR work when the band is full of static crashes? If so, is
100 watts too much with 20 over 9 QRN? Just trying to learn.
I have it working both RX and TX (5W) on 30 meters right now. :-)
73, Mike
www.w0btu.com
_
Topband Reflector Archives -
When I last investigated, all the skimmers and Web SDRs that were outside
of North America all had terrible receive antennas for copying DX signals
on 160. (And who knows how many of them are in quiet locations?)
When I say terrible, I mean small magnetic loops, very short whips, low
dipoles, a
FWIW, here's a site where someone apparently did some tests. Someone posted
it on eHam the other day in a similar discussion.
http://www.k2kw.com/verticals/verticalinfo.htm
73, Mike
www.w0btu.com
_
Topband Reflector Archives - http://www.contesting.com/_topband
#73 material is usable from 5 kHz to 50MHz? I thought that was a typo at
first.
I'll have to study that a little closer sometime. :-)
73, Mike
www.w0btu.com
On Wed, Aug 6, 2014 at 11:45 AM, Tim Shoppa tsho...@gmail.com wrote:
#73 is a very nice mix for low band transformers but some of the
It's certainly possible.
You can read what he said and see photos at
http://forums.qrz.com/showthread.php?240056-Need-source-for-Cushcraft-R5-torroidsp=1882177#post1882177
73, Mike
www.w0btu.com
On Tue, Aug 5, 2014 at 1:54 PM, Bill Wichers bi...@waveform.net wrote:
Well, I should have them in
I haven't bought a thing from Amidon after reading a few bad experiences on
qrz.com. Here's one:
forums.qrz.com/showthread.php?240056-Need-source-for-Cushcraft-R5-torroids
forums.qrz.com/showthread.php?301910-FT-900-putting-out-25-watts-in-SSB-with-ATU-off
Read W9GB's comments there* and then
per foot.
lists.contesting.com/_towertalk/2006-12/msg00510.html
73, Mike
www.w0btu.com
Mike, what do you mean when you say fires backwards.
On 7/28/2014 8:59 AM, Mike Waters wrote:
Carl,
On Sun, Jul 27, 2014 at 6:53 PM, Carl k...@jeremy.mv.com wrote:
I knew that answer 20 years ago
If I every put up a Slinky-style Beverage, I'm probably going to try #12 TW
solid insulated copper wire. Probably will close-wind it on a ~4 diameter
fixture made from PVC pipe, and then stretch it out along its rope support.
Any ballpark idea what the pitch should be?
73, Mike
www.w0btu.com
On Sat, Jul 26, 2014 at 10:39 AM, donov...@starpower.net wrote:
Longer Beverages provide narrower beamwidth, which reduces QRM or QRN that
would be received through the main lobe of a shorter Beverage
On my bucket list is a system for remotely changing the lengths of my two
2-wire Beverages
I can't think of anyone else besides VK3ZL who was a regular from
Australia. We will sure miss hearing his signal here in SW Missouri.
73, Mike
www.w0btu.com
On Tue, Jul 8, 2014 at 2:16 PM, Steve HA0DU ha...@dx.hu wrote:
VK3ZL was one of the very few regular signals from Australia on 160
That's a great idea.
If she only knew just how happy that he made so many different people all
over the planet. Just hearing him call CQ, or even just seeing his CQ
spotted on a DX cluster always made me smile. He will go down in Topband
history and long be remembered.
Send her this link, too,
With a K3 and a PC running the right software (?), this can be done without
the P3, correct?
AND, I can click the display with a mouse to jump to that freq?
Because if I can't, I may pass on the K3. I see that there are a number of
different K3 rig control programs, but I don't know the
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