Chester,
Kindly note the statements below, especially the one from the OP.
73 Mike
W0BTU
On Tue, Sep 6, 2022, 12:35 PM Chester Latawiec wrote:
> Looking for 6L6s to rebuild a Collins 32-G transmitter. It uses 8 or 9
> 6L6s!!
> ___
> ... When replying, please edit your Subj
There is an active LF and MF Slack chat group. Links from there to many
websites about 630 and 2200m.
You should see the TX and RX arrays that some of those guys have!
Download the Slack app to join.
73,
Mike
W0BTU
_
Searchable Archives: http://www.contesting.com/_topband - Topba
My 160m antennas are all down, but I'd love to listen! Can anyone suggest a
Web SDR with usable CW 160m reception?
TIA!
Mike
W0BTU
On Thu, Oct 20, 2022, 9:41 AM Tree wrote:
> The "Low Band Jack" version of the Stew Perry contest will be held this
> weekend, starting at 1500Z on Saturday.
>
___
Thanks Mark (and all the others who replied)!
This seems to be exactly what I was looking for. I wasn't expecting any of
these Web SDRs to have the type of RX antennas that contesters use. Mostly,
I wanted to listen to keep my CW skills up. But it'll also be fun to see if
I hear any DX.
Good luc
Have you called the power company? The chief engineer from Ozark Electric
here has gladly used their expensive noise tracking SDR and VHF antenna
(and my Beverages) to find it and fix it.
73 Mike
W0BTU
On Wed, Dec 7, 2022, 2:48 PM Richard (Rick) Karlquist
wrote:
>
> Can anyone inform me at to w
That's a new one for me! A short Beverage for higher-angle signals. Thanks!
I need a few of those here for closer stateside signals. :-)
73 Mike
W0BTU
On Mon, Dec 12, 2022, 9:55 AM Frank Donovan wrote:
>
> ... Once you get your loop antenna going you might consider experimenting
> with alternat
Another con about kites is that they need atmospheric lift to stay up. My
first field day in the late 1970's, Tom W8JI was working Hungary on a
kite-supported antenna from near Toledo, until nighttime wind conditions
brought the kite down.
What's been said about windy days and WX balloons also app
Yes, the advantages of having good Beverage antennas in addition to an
inverted-L are very well established indeed. I (and thousands of other
Topbanders) can vouch for that from personal experience.
Yes, there are times when your inverted-L will out-hear good Beverages.
Even DX, *but that is the e
You need to drain off the snow static etc. with a resistor in series with a
proper RF choke. The values are on this page. And buy the Ohmite resistor
specified! :-)
https://web.archive.org/web/20181115070846/http://www.w0btu.com/Beverage_antennas.html
On Sat, Dec 24, 2022, 12:34 PM Wes wrote:
>
Oops! DON'T use an RF choke for a single-wire Beverage. Just the OY 470 ohm
resistor to a good RF ground. Sorry.
73 Mike
W0BTU
On Sat, Dec 24, 2022, 1:44 PM Mike Waters wrote:
> You need to drain off the snow static etc. with a resistor in series with
> a proper RF choke. The va
All,
Kindly direct questions to this group, and not to me privately. TIA.
73 Mike
W0BTU
On Sat, Dec 24, 2022, 1:49 PM Mike Waters wrote:
> Oops! DON'T use an RF choke for a single-wire Beverage. Just the OY 470
> ohm resistor to a good RF ground. Sorry.
>
> 73 Mike
> W0BT
http://lists.contesting.com/_topband/
It's at the bottom of every post. :-)
73 Mike
W0BTU
On Wed, Dec 28, 2022, 9:06 AM Fred Moeves wrote:
> What happened to the Topband Archives the link I have no longer works.
>
> Thanks
> Fred KB4QZH
>
> _
> Searchable Archives: http://www.c
I haven't seen anyone mention ferrite chokes. 1 turn through 73 material
binocular cores or beads should fix that, from 160m through HF. Place them
as close as possible to the GFCI.
73 Mike
W0BTU
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
On Fri, Jan 27, 2023, 1:45 PM Tim Shoppa wrote:
> ... I am hearing horrible intermod with local AM station WAVA AM 780.
>
The only debugging I can think of is, disconnect all antennas (including
your 160m) except for one, then insert a step attenuator between it and
your receiver.
If it persist
On Sat, Jan 28, 2023, 11:59 AM Roger Kennedy
wrote:
> ... However, I never call CQ in these contests, as I don't want to waste
> time
> getting called by dozens of EU stations!
>
What's wrong with calling CQ [AREA]?
e.g.
CQ DX
CQ NA
CQ SA
CQ ...
And if you get called by a EU, just ignore it.
7
On Sat, Jan 28, 2023, 1:38 PM Charles Morrison <
charles.morrison.n...@gmail.com> wrote:
> Many poor operators in Europe do not respect an area CQ, especially on CW.
> On SSB Many poor operators in Europe wont even respect a DX station when
> he calls for a specific prefix or suffix, why would the
Just attenuate the signals. A few resistors is way cheaper than 195 bucks.
Or a 2k pot. ;-)
73 Mike
W0BTU
On Fri, Apr 21, 2023, 11:56 AM Eric Scace K3NA wrote:
> Being so close to the transmitter site. it's quite possible that you are
> experiencing receiver front end overload, and your receiv
On Fri, Jun 16, 2023, 7:54 AM Roger Kennedy
wrote:
>
> But how are conditions in North America at the moment . . . are you getting
> a lot of QRN? (we have hardly any over here)
>
Visit https://lmaps.org/#-93.83;37.27;3 to see the current thunderstorms in
North America.
Main site is lightningm
On Mon, Jun 19, 2023, 4:14 AM Roger Kennedy
wrote:
>
> Well I don't know how others got on . . .
>
> But I didn't hear one single North American station on Saturday night !
>
Did any other European stations?
73 Mike
W0BTU
>
_
Searchable Archives: http://www.contesting.com/_topb
with a handful of the usual EU suspects but not
> great signal reports on RBN.
>
> Regards
>
> Paul MM0ZBH
>
>
>
> On Mon, 19 Jun 2023 at 23:01, Mike Waters wrote:
>
> > On Mon, Jun 19, 2023, 4:14 AM Roger Kennedy <
> ro...@wessexproductions.co.uk
>
On Sun, Jun 25, 2023, 5:42 AM Michael Rutkaus wrote:
> ... most of the time
> had a friendly "swing" to his sending, it sounded like a casual friendly
> conversation. And Kay's CW was friendly and precise.
>
Sounds like he had a Vibroplex "bug"? Reading back through old QSTs in the
monthly lett
Hi Dave,
Check out my old webpage at
https://web.archive.org/web/20181115070846/http://www.w0btu.com/Beverage_antennas.html
73 Mike
W0BTU
On Sun, Jul 30, 2023, 7:36 AM R. David Eagle via Topband <
topband@contesting.com> wrote:
> Hello all,
> I am in the process of putting together a couple swi
I bought my Bournes 90 volt GDTs from Mouser.
73 Mike
W0BTU
On Tue, Aug 1, 2023, 8:27 PM R. David Eagle via Topband <
topband@contesting.com> wrote:
> Thanks Ken et al.I appreciate all of the info. I am going to start
> reading through the articles when kids hit the hay! You can really n
If you don't already have it, *Low Band DXing* by John Devoldere, ON4UN
(published by the ARRL) has a very informative chapter about receiving
antennas. Most of it is about Beverage antennas. Highly recommended.
73 Mike
W0BTU
https://web.archive.org/web/20190827040547/http://w0btu.com/
On Thu, Au
Aug 4, 2023 at 9:42 AM Mike Waters wrote:
>
>> If you don't already have it, *Low Band DXing* by John Devoldere, ON4UN
>> (published by the ARRL) has a very informative chapter about receiving
>> antennas. Most of it is about Beverage antennas. Highly recommended.
>>
Contrary to what you hear repeated on the bands year after year, what Jim
said is *exactly* right! :-)
I'll add that NVIS is rarely —if ever— useful for working DX on 160m.
73 Mike
W0BTU
https://web.archive.org/web/20190827040547/http://w0btu.com/
On Thu, Aug 24, 2023, 1:40 PM Jim Brown wrote:
tols
> rubbing along with the big guns. We work with what we have.
As I said, no harm or ill will intended. Just trying to save some folks
from misinformation. :-)
David G3UNA
>
>
> -Original Message-----
> From: Topband On
> Behalf Of Mike Waters
> Sent: Thursd
On Mon, Oct 23, 2023, 7:15 PM Tree wrote:
> Here in Oregon - the solar cycle has a huge impact on European propagation.
>
Same here in Missouri!
73 Mike
W0BTU
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
On Tue, Oct 24, 2023, 10:55 AM uy0zg via Topband
wrote:
>
> But it’s better not to be sad :-
Beautiful advice! :-)
Let’s congratulate Dmitry,
> UT5UGR - yesterday, in a desperate dash, he finally got into the T2C
> log!
>
What antennas did each of them use, do you know?
73 Mike
W0BTU
I'd kind of like a recording too, if one exists. I went to a hospital for a
stress test this morning expecting to go right home afterwards. But here am
in the hospital room after they put a stent in a coronary artery. :-)
73 Mike
W0BTU
On Mon, Nov 13, 2023, 7:27 PM Richard (Rick) Karlquist <
rich
Hello Don es Roger,
Can I assume these RBN SDRs are also on websdr.com? If so, which ones? That
is, what are they called, so we can listen to the right ones?
I no longer have any antennas.
73 Mike
W0BTU
On Fri, Jan 26, 2024, 3:54 PM Don Kirk wrote:
> I know 3 RBN reporting receivers located
Thank you for the information. :-)
73 Mike
W0BTU
On Fri, Jan 26, 2024, 5:06 PM Don Kirk wrote:
> Hi Mike,
>
> As far as I know the RBN receivers are not related at all to the
> websdr.com receivers.
>
> Don wd8dsb
>
> On Fri, Jan 26, 2024 at 5:12 PM Mike Waters wrote:
That's an excellent idea!
73 Mike
W0BTU
On Tue, Jan 30, 2024, 1:10 PM Mark wrote:
>
> ... I am surprised this contest isn't run around the equinoxes to level
> the playing field, not to mention evening out the effect of QRN.
>
_
Searchable Archives: http://www.contesting.com/_to
Not again! (Sigh)
Mike
W0BTU
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
On Fri, Apr 19, 2024, 2:42 PM Dave Cuthbert wrote:
> ... " WWAS accomplished this feat of
> engineering through the development of a two-element antenna that generates
> the electric field and the magnetic field separately." ...
>
Ah, he claimed to know more that James Clerk Maxwell, did he? Tho
I couldn't possibly have said it any better! :-)
73 Mike
W0BTU
https://web.archive.org/web/20190827040547/http://w0btu.com/
On Mon, Sep 2, 2024, 1:16 PM Mike Fatchett W0MU wrote:
> Steve,
>
> Wow! That is awful but you are one lucky son of a gun! Glad you are
> still with us!
>
> W0MU Mike
>
Gerr,
Please visit http://lists.contesting.com/mailman/listinfo/topband to
unsubscribe.
73, Mike
www.w0btu.com
[was Re: Topband: Topband Digest, Vol 195, Issue 12]
On Tue, Apr 9, 2019 at 11:16 AM Gerr via Topband
wrote:
> No more Topband digest please m0awx
>
> Sent from my iPad
>
___
Surely, others other than myself had fun with the neighbors by hanging an
old fluorescent lamp on their wire and vertical antennas! ;-)
Last time, they thought it was a UFO! Dad made me take it down then.
73, Mike
www.w0btu.com
_
Searchable Archives: http://www.contesting.com/_top
On Mon, Apr 22, 2019 at 3:50 PM Chortek, Robert L. <
robert.chor...@berliner.com> wrote:
> ... Seems like most CW ops have lost interest of late. I’m about to pull
> the plug ...
>
Some of us CW ops have not lost interest at all. Our advancing age is like
a brick wall sometimes.
When and if we
On Tue, Apr 23, 2019 at 1:52 PM VE6WZ_Steve wrote:
> ... perhaps many of these FT8 operators were never 160m DX CW ops anyway.
> There are likely many FT-8 ops that don't know morse code, or are not
> proficient at CW ...
>
Wow, that's a profound thought, Steve! I never thought of that, but it
m
Hi Jim,
This was very nicely illustrated earlier today by Phil Frost, W8II at
https://ham.stackexchange.com/questions/13379/are-qrp-transceivers-only-meant-for-cw-communication
73, Mike
www.w0btu.com
On Tue, Apr 23, 2019, 5:00 PM Jim Brown wrote:
> ... The bottom line is that FT8 (and other W
Someone on 75m this morning said that there was a new FT-4 mode, meant for
contesting. I know nothing about it.
73, Mike
www.w0btu.com
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
*In addition to CW contesting*, this might be fun to try sometime for us
old men with chronic fatigue, mono, and Lyme. Thank you!
73, Mike
www.w0btu.com
On Wed, Apr 24, 2019, 12:38 PM Joe wrote:
> ...
> Soon after the "FT8 Roundup" held on December 1-2, 2018, we started serious
> work on a fas
I fully agree, Wes. But based on what I've seen over the years, I just
don't think that the ARRL will ever do that.
73, Mike
www.w0btu.com
On Wed, Apr 24, 2019, 12:55 PM Wes wrote:
> ... there is a separate DXCC for Phone.
>
> I would have no problem at all with FT-8 if it (and similar automati
Not on my mower. I've burned up a lot of belts because they slipped.
73, Mike
www.w0btu.com
On Fri, May 10, 2019 at 12:15 PM Michael Rutkaus wrote:
> Dramatically lighten the springs that control belt tightness on any
> mower, enough to cut your specific grass but slip at anything more.
>
> 73
http://lowbandsystems.com
73, Mike
www.w0btu.com
On Sat, May 18, 2019, 10:10 PM Wojciech Tomczyk via Topband <
topband@contesting.com> wrote:
> Just found this interesting website:
>
> LowBandSystems
> ...
_
Searchable Archives: http://www.contesting.com/_topband - Topband Refle
Hi John,
To add to Wes' excellent answer, I doubt whether the outriggers have a
large enough contact area with the earth to cause any significant losses.
More important is an effective choke balun on the coax at the feedpoint.
On Wed, May 29, 2019, 6:03 PM John Farrer via Topband <
topband@conte
Hi Gary,
Thank you for sharing this. I don't have an ant problem with my Beverages
(because I always remove DC power when I'm not sitting in the shack), but I
certainly do in the outdoor kWH meter/breaker enclosure just downstream
from the pole pig.
We've always used those plastic boxes sold by T
H Bruce,
Not aware of a drone, but have you considered one of those industrial-style
heated foggers? You might even be able to rent one. You'd better be
downwind and wear proper gear for that. :-)
BTW, tick granules (the only type I have ever used) would only kill the
ticks near the ground.
73,
Tried that once.
The ones that didn't kill themselves by flying against the inside of the
coop were eaten by predators. They will not nest inside the coop.
Oh, and did I mention how loud they are? Ear-splitting.
On Tue, Jul 16, 2019, 10:07 AM AB2E Darrell wrote:
> Hi Bruce,
> Just remembered tha
This is generally good advice. However, those just-hatched "seed" ticks do
not wash off in the shower. (Don't ask me how I know that. :-) And usually,
you find dozens of those little buggers crawling all over you at once.
There are tick removing tools, such as the The Tick Key. That one needs to
b
Around here (SW Missouri) a wood tick is a lot larger than any other tick.
They are fat little buggers with a greenish tint.
I thought dog ticks were similar in size and appearance to lone star ticks.
But I may very well be wrong. Google knows!! :-)
73, Mike
www.w0btu.com
On Tue, Jul 16, 2019 at
Bruce,
I had some very dense growth removed by hiring someone with a skid steer
equipped with a grinding and mulching attachment. In comparison, it makes a
brush/bush hog look like a walk-behind mower! That thick growth was gone in
no time, and so I was finally able to easily get at one one of my
.w0btu.com
On Wed, Jul 17, 2019, 12:27 PM Mike Waters wrote:
> Bruce,
>
> I had some very dense growth removed by hiring someone with a skid steer
> equipped with a grinding and mulching attachment. In comparison, it makes a
> brush/bush hog look like a walk-behind mower! That thic
Hey, Stan! :-)
The way to unsubscribe from this Topband mail reflector is to use this page:
http://lists.contesting.com/mailman/listinfo/topband
73, Mike
www.w0btu.com
On Fri, Jul 19, 2019, 5:42 PM Stan K wrote:
> Just an FYI:
>
> Some email programs have a button you can just tap on or click
I'm with you both, never rule out your vertical!
During one ARRL 160 contest a few years ago, conditions were such that I
used my inverted-L over 90% of the time *even though I had two 580'
switchable-direction Beverages*. Signals at my central USA location were
coming in from all directions.
73,
Hi Wes,
I have also always had the highest regard for 99.9% of anything that W8JI
has stated.
However, I feel exactly the same way about K2AV (and, of course, Rudy too).
In this particular case, I am inclined to listen to Guy and the others here
who have discussed and used the FCP.
Probably, the
This post is not helpful, but thank you for you opinion.
On Wed, Jul 31, 2019, 4:17 PM Hans Hjelmström wrote:
> UNFORTUNATELY K1JT and FT 8 killed amateur radio on 6 meters.
> It will kill it on 160 meters,and SOON it will kill all amateur radio
> activity on all bands.
>
_
Se
Well said, Mike! :-)
On Wed, Jul 31, 2019, 5:30 PM W0MU Mike Fatchett wrote:
> Same thing was said about SSB.
>
> The sky is not falling.
>
> K1JT might have saved Ham Radio. Seems to be quite popular. 60 plus
> percent of all LOTW confirms are FT-X nowSpeaks volumes.
>
> There is room for
I meant Jerry, not Mark. Sorry.
On Thu, Aug 1, 2019, 10:15 AM Mike Waters wrote:
> Very interesting. How does JT9 compare, especially in regards to the noise
> floor issue that Mark raised?
>
> 73, Mike
> www.w0btu.com
>
_
Searchable Archives: http://www.conte
Very interesting. How does JT9 compare, especially in regards to the noise
floor issue that Mark raised?
73, Mike
www.w0btu.com
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Some folks don't have room for a 580' Beverage. BOGs are easy to install,
but I have never heard of anyone who raved about their performance. :-)
How long was your BOG, what type of ground was it over, and how high was
it?
If you search the archives for the three keywords K2AV BOG DOG, there is
e
Hi Wes,
Yes, that's what it means. :-) But at my QTH, a BOG would have to lie on
the pasture grass, a couple of inches from the soil.
73, Mike
www.w0btu.com
On Thu, Aug 1, 2019, 1:01 PM Wes wrote:
> Doesn't "BOG" mean, Beverage On Ground? If so, isn't the answer, "on the
> ground"?
>
> Wes N
Joe, ~200' is what most folks report as being a good BOG length on 160. The
close proximity to the earth requires a shorter length due to the reduced
VF.
http://www.w0btu.com/Beverage_antennas.html#Beverage_On_the_Ground
has a little BOG info. But the best source of info can only be found by
searc
One excellent RX antenna that has not been mentioned here yet is the
rotatable Waller Flag, which JC, N4IS has written much about both on this
reflector and his website (Google is your friend). This works on small lots.
IIRC, it has the same RDF as a 580' Beverage, but is a mere 40' long. JC
has o
Do either JT9 or FT8 *really* need a wide SSB filter? What happens if we
use a good narrow CW filter instead?
73, Mike
www.w0btu.com
On Thu, Aug 1, 2019, 2:03 PM K4SAV wrote:
> W0BTU directed a question to me about JT-9. I have never tested JT-9 so
> I don't have any information to supply on t
It'll be a cold day in hell before I ever join the ARRL again.
On Sat, Aug 3, 2019, 1:50 PM Martin Kratoska wrote:
> Gentlemen,
>
> stop this annoying practice, please! Not all are ARRL members!
>
> Thanks for understanding,
>
> 73
> Martin, OK1RR
>
>
_
Searchable Archives: http:
Based on questions I've received over the years from hams who found my
Beverage antenna page, there is an an additional problem.
Some hams just do not grasp that:
(1) Beverages are directional, like a Yagi is.
(2) A Beverage has to be reasonably straight. Dozens of folks want to put
it over an exi
Couldn't have possibly said it any better, Frank et al !!
For you, John: http://www.w0btu.com/160_meters.html :-)
73, Mike
www.w0btu.com
On Tue, Aug 20, 2019 at 12:33 PM wrote:
> Hi John,
>
> Horizontal polarization isn't very effective on topband except for local
> QSOs. It would be far better
Thank you for asking this, because I have always been fascinated with the
concept of loaded Beverages (either BOGs or shortened overhead).
But what did you mean by "proper pattern"? I assume that you mean "usable
pattern" and that realize that the pattern will change with frequency. See
for yourse
The only way to predict the RDF and pattern is by modeling it. I don't know
of anyone who has done this. I have a few of my .ez Beverage models in
w0btu.com/files/ as a starting point, but I don't think that I uploaded
everything there.
There are free antenna modeling programs out there. I have on
ground. Also, there is really no way to model
> the properties of "ground." It can vary in just a few feet and the moisture
> content varies from day to day. I think this is a "try it" kind of antenna.
> Read other's reported results.
>
> Chuck W5PR
>
>
nd of antenna.
>> Read other's reported results.
>>
>> Chuck W5PR
>>
>> On Sat, Aug 24, 2019 at 12:29 PM Mike Waters wrote:
>>
>>> The only way to predict the RDF and pattern is by modeling it. I don't
>>> know
>>> of anyon
Exactly! I have been told by *many* highly intelligent people that when
modeling any wires running horizontal near the ground, all bets are off, *no
matter what software is used. Not even the most expensive version of
NEC4. *That's
just a fact.
Maybe that'll change someday, but it's doubtful unles
I bought two under-$200 drones, and sent back both for a refund. (I have
also used slingshots/fishing reels/lead weight.)
Neither of those worked as well as the pneumatic launcher that I bought
from the Joplin, Missouri ARC. And it was windy, too! But the calmer the
wind speed, the better.
http:
Mike,
I'll bet your drone cost more than $200! ;-)
I paid under that this winter. The one drone that did fly was absolutely
uncontrollable.
It would be helpful if you posted a list of features here to look for when
shopping for a drone. Perhaps applicable snippets of text from that QST
article?
14 turns of CAT5 wound on a 2.4" #31 core works for me on 160-40!
However, he is interested in 2m. Is another mix and less turns more
suitable? I suggest that K9YC'S rfi-ham pdf be consulted to get it right
the first time.
73, Mike
www.w0btu.com
On Sat, Sep 7, 2019, 3:00 PM fmoeves wrote:
> 2n
The flooded F6 I use for my Beverages has been chewed down to the center
conductor in one spot for years. Didn't affect a thing. That's one of the
things that flooded coax is for.
It is Commscope quad-shielded F-6 and with the inner foil bonded to the
dielectric. Bought a 1000' spool of it from eB
Can't you install a static drain resistor to keep that voltage from
building up so high?
73, Mike
www.w0btu.com
On Tue, Sep 24, 2019, 2:09 PM Lee STRAHAN wrote:
> Hi Guys,
> Assuming your verticals have a very good insulator there is NOTHING to
> stop that input capacitor from charging to ver
t. :-)
73, Mike
www.w0btu.com
On Tue, Sep 24, 2019, 2:17 PM Mike Waters wrote:
> Can't you install a static drain resistor to keep that voltage from
> building up so high?
>
> 73, Mike
> www.w0btu.com
>
> On Tue, Sep 24, 2019, 2:09 PM Lee STRAHAN wrote:
>
>>
Google translated:
Hello !
It's time on the site to change the picture with the numbers DXCC.
See the file in the application!
I know that there are changes in UR5AS, UT3QU, UT9NA. Maybe someone else?
Sergei Ivanovich seems to have worked at night with 8R. Not new?
In general, let's and will
Hello Dave,
I have not tried that, because I heard a number of well-known Beverage
antenna experts report that it doesn't help at all. It actually hurts the
performance.
A Beverage antenna requires lossy ground under it in order for that
low-angle directional pattern to form. That is why Beverage
Thanks, Dave! You said it *much* better than I did. :-)
73 Mike
W0BTU
On Sat, Oct 12, 2019, 6:25 PM wrote:
> Unfortunately, there is some information in the Misek book that is simply
> not correct based on today's knowledge. 73. . .Dave, W0FLS
>
_
Searchable Archives: http:
Another real-time propagation aid.
http://www.dxinfocentre.com/ndb.htm
73, Mike
www.w0btu.com
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Main page at
http://dxinfocentre.com
Is more useful.
73, Mike
www.w0btu.com
On Sun, Oct 13, 2019, 12:02 PM Mike Waters wrote:
> Another real-time propagation aid.
> http://www.dxinfocentre.com/ndb.htm
>
> 73, Mike
> www.w0btu.com
>
_
Searcha
I am going to say, *gentlemen. Apologies in advance for
hurting anyone's feelings.
Most respectfully and very 73 to all,
Mike Waters W0BTU
www.w0btu.com
On Sun, Oct 13, 2019, 2:33 PM Artek Manuals
wrote:
> Neither
>
> What is killing amateur radio is that for most young people it is no
Two guys that never used a Beverage antenna before. Lots of misinformation
there.
https://blubrry.com/arrl_the_doctor_is_in/50546173/beverage-antennas
Forget the podcast, just buy ON4UN's Low Band DXing book.
73, Mike
www.w0btu.com
_
Searchable Archives: http://www.contesting.com
That's a good way of looking at it, Mike! You've convinced me.
It might be different if it were a 160m contest like the Stew.
73, Mike
www.w0btu.com
On Sat, Oct 26, 2019, 6:57 PM W0MU Mike Fatchett wrote:
> ... It is just a hand full of days per year. We should be happy there is
> a
> good tu
Exactly, Dave.
Mine are hermetically sealed, and so dessicant works very well.
I use it to prevent condensation turning to ice on my relay coil and
contacts, thus making them stick closed in freezing conditions.
I have never seen any condensation or frost on the inside of those clear
polycarbona
If you want to use dessicant, then you should use a suitable
hermetically-sealed pressure equalizer. This keeps the pressure inside the
box always the same as on the outside, regardless of air temperature or
barometric pressure. Thus, no water vapor can enter.
These are available commercially.
(S
CORRECTION:
"blew the cover off" should have read "damaged the cover gasket".
On Thu, Oct 31, 2019, 12:13 PM Mike Waters wrote:
> If you want to use dessicant, then you should use a suitable
> hermetically-sealed pressure equalizer. This keeps the pressure inside the
&
Same experience here! This was in a remote antenna tuner, and they spun
their web between some variable capacitor plates.
My holes were no bigger than 1/16". Might have been 3/64".
73, Mike
W0BTU
On Thu, Oct 31, 2019, 11:31 AM hg chapoton wrote:
> I recently had cause to pull some preamp boxes
This is not helpful. How long do we have to put up with this utter nonsense?
That's a rhetorical question.
On Thu, Dec 5, 2019, 5:02 PM Doug Renwick wrote:
> Nick,
> Let me take a guess. It had to be one of those 'make believe' inaudible FT8
> contacts. Am I right?
>
> BTW I did work UR5AS with
Search the Topband Archives for Guy Olinger's posts containg BOG. IMO, what
he has shared here is as accurate as anyone's.
Guy posted a recent thread that stated that a BOG is not a Beverage. While
some took issue with that, he was really making some points about the major
differences and issues w
Interesting. After reading that Spaceweather article, I had my radiation
detector app running on my tablet two days ago, and there was no doubt that
it was picking up significantly more counts per minute than I've ever seen!
However, the background count last night had dropped to almost normal,
ind
Do the inverted-L, but use at least two 10' high 1/4 wave radials.
Do NOT use an RF ground rod, or any radials on or near the earth. Just
connect the coax shield to the junction of the radials and any remote
tuner. At that point a good choke balun is necessary.
Leaving out the choke or grounding
Also, the cosmic rays are somewhat elevated right now. But not like they
were last week.
73, Mike
W0BTU
-- Forwarded message -
From: SpaceWeather.com
Date: Mon, Dec 16, 2019, 11:55 AM
Subject: Sunspots Break a Space Age Record
To:
Space Weather News for Dec. 16, 2019
https://spa
on is less than 1/4
wavelength.)
I had photos of it online, but w0btu.com crashed. Looking for a place to
upload it to.
I hope this makes sense. Sorry for the lack of details below.
73, Mike
W0BTU
On Sun, Dec 15, 2019, 8:22 PM Mike Waters wrote:
> Do the inverted-L, but use at least two
e current at the bottom five feet -- or so -- of the
> verticals
> was attenuated by the sloping radials in close proximity to the verticals.
>
> As an aside, the performance of the array improved dramatically...
>
> 73
> Frank
> W3LPL
>
>
I may upload it again someday, but for now a partial clone of w0btu.com can
be found at:
https://web.archive.org/web/20190827040547/http://w0btu.com/
All the pages about Beverage antennas, 160 meters, ground systems, etc.
seem intact. Some large files and images are missing.
The server crashed i
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