of the Beverage.
73
Frank
W3LPL
- Original Message -
From: "GEORGE WALLNER"
To: "Steve" , "topband"
Sent: Sunday, April 28, 2024 12:57:17 AM
Subject: Re: Topband: DXpedition Beverage Termination Grounding Schemes??
On K1N we had two ~ 100 foot length radi
of this huge phased Beverage array. We even used
road construction equipment to precisely level the entire phased
Beverage antenna field so it was precisely level it within a few inches.
Of course we deeply buried all of the feed lines from the feed points
all the way to the receivers.
73
Frank
W3LPL
dries out during a drought. Instead
of using a ground rod for each vertical I use eight 65 foot wires laid
on the surface of the ground. Perfect! Short radials should be just as
effective with a Beverage.
73
Frank
W3LPL
- Original Message -
From: "Steve"
To: "topband"
Northern hemisphere transatlantic propagation is far superior
in January compared to the equinoxes
73
Frank
W3LPL
- Original Message -
From: "Mike Waters"
To: "Mark"
Cc: "topband"
Sent: Tuesday, January 30, 2024 11:22:36 AM
Subject: Re: Topband: ZLs
That
AA1K has worked 51 countries on 160 meters and 275 countries on all bands
from his car using 100 watts and KJ7U screwdriver for 160-6 meters
73
Frank
W3LPL
- Original Message -
From: "Richard"
To: "Mike" , "topband"
Sent: Saturday, January 6, 2024 9
beyond the end of the radials --
at the necessary low radiation angles of radiation on those bands.
That's why your simple Moxon performs so well on 10 meters
compared to your verticals.
73
Frank
W3LPL
- Original Message -
From: w3...@roadrunner.com
To: "topband@contesting.com&q
be delighted with your results
73
Frank
W3LPL
From: "Felipe J. Hernández"
To: "Frank W3LPL"
Cc: "topband"
Sent: Monday, August 7, 2023 7:28:55 AM
Subject: Re: Topband: Is a 300' BOG + preamp worth it on 160m?
Frank,
That is the only thing that I have
Hi Bob,
Have you considered an array of short verticals? A simple
receiving 4-square is only 80 feet on each side
73
Frank
W3LPL
- Original Message -
From: w3...@roadrunner.com
To: "topband@contesting.com"
Sent: Saturday, August 5, 2023 2:52:00 PM
Subject: Re: Topband: Is
Hi Roger,
Your loft-mounted small receiving loop is working well, congratulations!
Your somewhat reduced null depth at night is caused by horizontally
polarized signals leaking into the side of your loop. That can
be improved only by locating it near the ground
Well done OM!
73
Frank
W3LPL
selecting
the location for your receiving antennas?
73
Frank
W3LPL
- Original Message -
From: "Roger Kennedy"
To: "topband"
Sent: Tuesday, May 23, 2023 3:05:13 PM
Subject: Topband: Loop on Ground receiving antenna.
I just tried making a Loop on the Ground to see if i
Phil,
You can use a simple direction finding antenna to locate the source
of the spurious signals
See March 2021 QST
It works very, very well
73
Frank
W3LPL
- Original Message -
From: "Phil Lefever via Topband"
Cc: "Topband"
Sent: Friday, April 21, 2023 5:
analyzer frequency. As you do a frequency sweep the
VSWR and impedance should not change. If it does, moisture is
probably eating away inside your coax.
73
Frank
W3LPL
- Original Message -
From: "Dennis W0JX via Topband"
To: "topband"
Sent: Monday, April 3, 202
I agree with Rick, all of the CATV RG-6 I've tested is much more
than 75 ohms, in one case it was 95 ohms! Depending on length,
this can cause significant unwanted impedance transformation.
73
Frank
W3LPL
- Original Message -
From: "Richard"
To: "Pete N4ZR N4ZR&quo
of the array and especially its nulls are significantly degraded.
73
Frank
W3LPL
From: "K3ZJ David Siddall"
To: "Frank W3LPL"
Cc: "topband" , "PVRC" , "Pete
N4ZR N4ZR"
Sent: Friday, March 31, 2023 12:34:28 AM
Subject: Re:
.
73
Frank
W3LPL
From: "K3MM"
To: "Frank W3LPL" , "topband" ,
"PVRC"
Cc: "Pete N4ZR N4ZR"
Sent: Thursday, March 30, 2023 8:08:42 PM
Subject: Re: Topband: 2-element receiving arrays
I just completed building a YCCC nine Circle
*MjEyMDA1Nzc3MS4xNjUyMzAyMjc0*_ga_NZB590FMHY*MTY4MDE5NTk1OC40My4xLjE2ODAxOTYwNTYuNTAuMC4w
https://www.youtube.com/watch?v=dl-crM5Kb6A
https://www.youtube.com/watch?v=lVW1CmrzP7c
A two element array occupies only 60 feet or even a little less.
73
Frank
W3LPL
- Original Message -
From: "Pete N4ZR
an-2023 09209 12 2
14-Jan-2023 06209 12 4
14-Jan-2023 03209 12 4
14-Jan-2023 00209 12 4
73
Frank
W3LPL
- Original Message -
From: "Ron Spencer via Topband"
To: "Topband@Contesting. Com"
Sent: Tuesday, January 17, 2023 2:54:05 PM
Subject: T
? That measurement can probably be done
at your QTH since the 1940 kHz emission is so strong there. Maybe your
Flex radio can do the measurement?
The next step is for someone affected by the 1940 kHz spurious emission
to contact the WKDM/WWRU station managers, not the FCC.
73
Frank
W3LPL
On Mon, Jan 9
lossy passes through the ionized E region.
73
Frank
W3LPL
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
years
I suspect we're experiencing the absorptive and F2 blanketing
effects of increased E region ionization that often limits 160
meter propagation during periods when the solar flux index exceeds
about 100
73
Frank
W3LPL
- Original Message -
From: "Bob Shohet, KQ2M"
To: &
a routine process used often.
73
Frank
W3LPL
From: "A J"
To: "Frank W3LPL"
Sent: Saturday, January 7, 2023 1:39:11 AM
Subject: Re: 1940 kHz intruder WWRU WKMD
Hi Frank
How do we define harmful interference?
I know some of the guy's that talk on 1940 a
Hi Fred,
We've figured out the mystery, now we need to determine if anyone is
being harmed by the weak, intermittent intermod on 1940 kHz
73
Frank
W3LPL
From: "Fred Kleber"
To: "donovanf"
Sent: Friday, January 6, 2023 1:34:04 PM
Subject: Finding Jersey City To
Hi George,
Faulty day/night switches may well be the cause! You may have seen
in my previous email that both stations switch patterns from day to night.
This is the first time I've ever hears of two AM stations with two
antenna arrays sharing the same small site
73
Frank
W3LPL
- Original
>>>
>>> It sounds like two station are there possibly more.
>>>
>>> I heard a frequency 1610khz said.
>>>
>>> No directional antenna to the south east. Just North and NE nothing
>>> heard on those. It is heard on the inverted V at varying
.
The signal it too weak here for me to analyze.
It appears to radiate from the vicinity on northern NJ, NY City or
southern NY
Perhaps a Topbander is that vicinity will report a stronger signal
73
Frank
W3LPL
- Original Message -
From: "K9YC"
To: "topband"
Sent: Thursday, Jan
Hi John
Your results suggest the 1940 kHz intruder is near New York City or northern NJ
Does anyone else hear it?
73
Frank
W3LPL
- Original Message -
From: "John Kaufmann via Topband"
To: "topband"
Sent: Thursday, January 5, 2023 12:25:52 AM
Subject: Re: Topban
Hi Dave
Your results suggest the intruder in western MA or CT or eastern NY, NJ or PA
Doesn't anyone else hear the intruder BC station on 1940 kHz?
73
Frank
W3LPL
- Original Message -
From: "Dave Olean"
To: "Frank W3LPL" , "topband"
Sent: Thursda
The 1940 kHz broadcast station is audible now (2245Z Tuesday)
Its roughly northeast of Maryland, perhaps in New England
I did not hear it yesterday
73
Frank
W3LPL
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Rick,
You'll be very pleased with the performance of the WB8DSB RFI hunting
flag antenna.
Don't forget to need lots of preamp gain. The WB8DSB flag is about 60 dB
down from a dipole on 160 meters. 40 dB of preamp gain is needed until
you're very close to the RFI source.
73
Frank
W3LPL
P1-30/20VD 20 dB HF preamps,
a case of eight AA batteries to provide power to the preamps,
a switchable attenuator and a Tecsun PL330 portable HF receiver.
I highly recommend this easily constructed RFI geolocation antenna
for the toolkit of any serious HF operator.
73
Frank
W3LPL
perform great :)
Maybe in a few million years it will be possible
73
Frank
W3LPL
- Original Message -
From: "JC"
To: "Frank W3LPL" , "topband"
Sent: Tuesday, December 20, 2022 12:25:35 PM
Subject: RE: Topband: Radials, EZNEC and far field
Hi Frank
,
low angle radiation from vertical antennas is determined almost
entirely by highly conductive soil or salt water in the large
reflection zone.
73
Frank
W3LPL
- Original Message -
From: "Ignacy Misztal"
To: "topband"
Sent: Monday, December 19, 2022 10:50:53 PM
Subje
Hi Pete,
Any preamp that has loss definitely needs repair. Preamps are simple
devices that are easy to troubleshoot, the transistor is a likely
culprit
73
Frank
W3LPL
- Original Message -
From: "Pete N4ZR N4ZR"
To: "topband"
Sent: Monday, December 12, 2022 2:59:09
Hi Pete,
Buy all means install more radials.
At 70 foot radial length diminishing returns is at about 30 radials
73
Frank
W3LPL
- Original Message -
From: "Pete N4ZR N4ZR"
To: "topband"
Sent: Monday, November 7, 2022 9:27:09 PM
Subject: Topband: How good
Hi Kenny.
You're biggest bang for the buck with two Beverages in Echelon will occur
if you also install a variable phase controller such as a DX Engineering NCC-2
73
Frank
W3LPL
-Original Message-
From: Topband [mailto:topband-bounces+john.kaufmann=verizon@contesting.com
Essentially all 1920s AM broadcast stations used roof top antennas
until the 1/4 wave vertical with 120 1/2 wavelength radials became
the standard in the 1930s
73
Frank
W3LPL
- Original Message -
From: "Hamilton Hicks,Jr"
To: "Mark" , "Kenneth Grimm"
Cc:
Frank
W3LPL
- Original Message -
From: "topband"
To: "Grant Saviers"
Cc: "topband"
Sent: Friday, April 8, 2022 3:22:24 PM
Subject: Re: Topband: Skirted vertical antennas for MF broadcast
And then there is this:
https://en.wikipedia.or
Hi Pete,
1/4 wave electrical length.
89 feet for two RG-11 solid dielectric coaxes in parallel.
73
Frank
W3LPL
From: "Pete N4ZR N4ZR"
To: "donovanf"
Sent: Monday, January 17, 2022 5:12:48 PM
Subject: Re: Topband: 1:2 UNUN
lengths? 1/4 wave?
73, Pete N4
Kenny -
Yes, 1/4 wavelength electrical length. 89 feet of RG-11 (not the
foam dielectric version used for CATV)
UHF T connectors are fine, if you need any I'll give them to you.
73
Frank
W3LPL
- Original Message -
From: "Kenneth Silverman"
To: "donovanf"
Cc: &qu
Hi Kenny,
A very workable alternative is to use two lengths of 75 ohm coax
in parallel. RG-11 is the best choice, but two lengths of RG-6
will also work. No need to coil it up, simply use it as part
of your transmission line from your antenna base to your station.
73
Frank
W3LPL
- Original
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