Here is the one possible explanation in my old article
http://www.k3bu.us/propagation.htm
73 Yuri, K3BU, VE3BMV, VE1BY etc.
> On January 16, 2021 at 6:20 PM Roger Kennedy
> wrote:
>
>
>
> If you have an efficient transmitting antenna, and an accurately calibrated
> S Meter, I have found
! ... _._
Yuri Blanarovich, K3BU, VE3BMV, VE1BY, ex OK3BU, etc.
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Restoration project. Was new, never in service. Bottom portion of cabinet,
power supplies flooded during Sandy. Exciter and PA stage were not flooded,
tubes never powered. Blowers need replacement. Operating and maintenance manual
included.
Pictures at
https://www.ebay.com/itm/183902290790
well. There are times when my directive receive antennas seem to be
broken
- which is another indication of high angles.
Tree N6TR
On Wed, Nov 28, 2018 at 8:51 AM Yuri Blanarovich wrote:
Not knowing about "gyros", but when operating and having vertical and
horizontal antennas ava
Not knowing about "gyros", but when operating and having vertical and
horizontal antennas available, I remember times when QSB was happening
on one antenna, switching to the "other" polarization antenna would
bring the signals up.
My conclusion was that at the times the signal's polarization
I think the best vertical installations were done by old radio
engineers.
No modeling programs, but tedious solid measurements reflecting reality.
What I saw at WOO - Long Lines AT station is perhaps ideal setup for
vertical all band (discone) antennas.
Radiator sits on concrete base about 3
Sorry to hear about Jack's QSY to radio heaven.
I had privilege to visit him few times and tried to shake few low band
records, one is still there as VA1A on 80m CQ WPX CW for NA. It was like
driving into Eu 160 radio tunnel. Getting smacked by hearing piles of
Europeans starting around 3
K3BU retirement sale:
1972 Buick LeSabre Custom "K3BU Radiomobile"
Ideal classic car for mobile operation, running great 350 V8, 104k
miles, green, few minor rusty spots, needs muffler, have new seat covers
and carpets. Two Hustler antenna mounts for HF and VHF. Wired for IC 706
MKIIG,
To put it simple terms:
Sun(spot) activity is low, atmo/ionosphere layers height has shrunk.
RF mirrors/ducts are lower, propagation is squished (sucks).
I remember 1958 when I could work the whole world at the same time with
10W Wehrmacht tank TX and (Windom) piece of wire for 24 hours on 10m!
Just got info from Herb, KV4FZ, I thought I share it.
Yuri, K3BU.us
Herb Schoenbohm
Two out of three tower still up and had taken the 5 element 20,15,10
down before the Hurricane hit. House did fine but 3 ele quad that I did
not take down is totaled with wire and pieces of fiberglass spars
I had 1300 ft Beverage running down the hill, it sucked (not signals).
Inv Vee was beating it.
I cut it in half and second night in the contest it worked well, beating
Inv Vee on DX signals.
It looks like in the direction of the slope on a hill, the pattern,
reception cone is forced to lower
Don't forget that in the ground there are "travelling" Eddy currents,
being generated by all kinds od "services". The worst are in the areas
where trolley services, electric trains and other high power services
use ground as the other conductor or just being there. They can get so
bad that
Global whatever, not our SUVs.
I hope K9LA gives me credit for this explanation and record, unlike
denying my pointing out high angle propagation on top band.
73
Yuri Blanarovich, VE3BMV, K3BU.us
topbanding since 1958
On Sun, Jun 05, 2016 at 07:21 PM, John Kaufmann wrote:
> (Note: dis
More in the category of ducting.
http://www.k3bu.us/propagation.htm
Yuri, K3BU.us
On Sat, Jan 23, 2016 at 05:07 PM, Brad Rehm wrote:
> Lee,
No one's mentioned the "Spotlight" phenomenon, which occasionally
happens
on 160. The signal comes shining down from the "upper layers" and
One #10 wire connection should be sufficient.
Just water the lawn before the contest.
73, HNY Yuri, K3BU.us
On Mon, Jan 11, 2016 at 12:10 AM, Robert Harmon wrote:
>
Topbanders,
I searched the archives under "ground screen" and could not find info
on my situation.
I have a 15 foot
What matters? Technology.
Engine on a sail boat, Cessna vs. glider, biker vs. runner and
competing in the same category. (According to ham radio logic)
DXCC was destroyed by lists and nets wy bck.
Now contesting, results, record tables are being destroyed by Internet,
remotes and
Hi Mike,
from your description, I think you would be best off not to fold back
the top wire, but try to go away horizontally as much as possible.
Folding back in U manner makes the current/radiation from the top half
cancel portion from the fed portion.
If you want to enhance vertical
Depends what are you expecting from Skimmer-RX-ANT setup.
If you want skimmer to find DX before the pack and looking for low angle
signals, then setup better use antenna with proper low angle vertical
pattern. Also getting true report when evaluating beach antennas with
low vertical angle,
Modeling programs are an excellent tool to calculate and predict some
properties of antennas - radiators.
What they do not see is the propagation mechanism after RF leaves the
antenna. Space wave can be hugging wave.
While the high frequencies signals behave more like high frequency
sounds -
nonsense, like 360 radials is worth 6 dB.
There is a huge difference between the validity of an A-B comparison
and running away with a feeling.
- Original Message - From: Carl To: Yuri Blanarovich ;
Sent: Monday, August 11, 2014 9:51 PM
Subject: Re: Topband: Modeling the proverbial
On Tue, Aug 12, 2014 at 08:14 PM, Tom W8JI wrote:
- Original Message - From: Yuri Blanarovich To: Sent:
Tuesday, August 12, 2014 4:50 PM
Subject: Re: Topband: Modeling the proverbial vertical on a beach
Oh, here comes the guru again. :-)
Is that immature stuff really
One pony needs to get into one drag radio car and drive around the ocean
front, over the bridges, back over the land and watch the S-meter and
listen to the bands. Observant would see 10 - 20 dB difference in signal
levels in lousy mobile, especially on low angle propagation.
Examples:
It makes difference on regular ground.
Once I put up killer 1200 ft Beverages on a location on the top of
the hill, with slightly sloping ground around. First night in the
contest Inv Vee was beating them. Sloping terrain and long wires were
likely producing low angles, way too low for
It makes difference on regular ground.
Once I put up killer 1200 ft Beverages on a location on the top of the
hill, with slightly sloping ground around. First night in the contest
Inv Vee was beating them. Sloping terrain and long wires were likely
producing low angles, way too low for
Original appeal by UT0FT to ARRL is at
http://uarl.org.ua/load/zvernennja_lru_v_arrl/13-1-0-387
Yuri, K3BU.us
On Fri, May 23, 2014 at 01:04 AM, Joe Subich, W4TV wrote:
These are not political statements - they are in indictment of K1ZZ
for blatantly ignoring the DXCC rules.
73,
From the ARRL Letter:ARRL Responds to Ukrainian Amateur Radio League
Regarding DXCC Status of Crimea
The ARRL has responded to an appeal from the Ukrainian Amateur Radio
League (UARL) to consider the information regarding the status of
Crimea as temporarily occupied territory. UARL President
On Wed, Jan 29, 2014 at 07:54 AM, Tom W8JI wrote:
How much I can improve by moving the coil up. What improvement should
I expect if center loading at about 7 meter? How about moving the coil
all the way up to the top loading spokes? Is it worth the effort? (the
pole won’t support much
Earth’s Mysterious Third Radiation Ring Driven By ‘Different Physics’
Earlier this year, NASA scientists discovered a “previously unknown
surprise circling Earth” — an ephemeral third ring of radiation
surrounding our planet. Now, some eight months later, UCLA scientists
say they know what’s
Scientwists are trying to prove that it is all human fault, causing
global (warming) climate change.
The reality is that we are getting just about all energy from the sun.
We know about the sunspot cycles.
Low sunspot activity (less energy from sun) causes (iono)atmosphere to
shrink, the
Here we go again, speaking of misinformation, peer review, spreading
false guru stuff.
You can not apply Kirchoff law from DC circuits to the current behavior
along the STANDING WAVE RF radiator.
Current magnitude changes along the standing wave radiator, on the
resonant dipole it is maximum at
Sooo, there is no current and voltage variation along the standing wave
resonant dipole?
S, Jasik et al, all those antenna books, modeling programs showing
RF CURRENT and/or RF VOLTAGE distribution along the (standing wave)
solid antenna wire are thinking otherwise?
Like parallel LC circuit
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