Topband: Fw: BOG SOME NOISE

[E.P via Topband]

 hello i have a BOG that work great however i notice there is some time noise 
come and go on 80m special sound like a generator i still can receiver i look 
on all aspect of noise inside the house and out i did test it with other 
antenna when the noise appear and with other antenna no noise [my BOG is 
200feet  long]i use this BOG Beverage On Ground Antenna Matching Set - 
PileupDX.com it is 50 ohm coax 
is any one may know what it can be i do not get this noise on 40m but on 160 i 
do hear it but low i trace this i think i get it 59 noise on 1.742Mhz  any tip 
will help again i do not have this noise from other antenna . thank you vy 73 
elan g0uut
  
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BOG Beverage On Ground Antenna Matching Set - PileupDX.com
 Beverage On Ground Antenna. Single-wire, single-direction beverage feedpoint 
transformer and termination set for...  |   |

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Topband Reflector Archives - http://www.contesting.com/_topband

Topband: BOG SOME NOISE

[E.P via Topband]

hello i have a BOG that work great however i notice there is some time noise 
come and go on 80m special sound like a generator i still can receiver i look 
on all aspect of noise inside the house and out i did test it with other 
antenna when the noise appear and with other antenna no noise i use this BOG 
Beverage On Ground Antenna Matching Set - PileupDX.com it is 50 ohm coax 
is any one may know what it can be i do not get this noise on 40m but on 160 i 
do hear it but low i trace this i think i get it 59 noise on 1.742Mhz  any tip 
will help again i do not have this noise from other antenna . thank you vy 73 
elan g0uut
  
|  
|   
|   
|   ||

   |

  |
|  
|   |  
BOG Beverage On Ground Antenna Matching Set - PileupDX.com
 Beverage On Ground Antenna. Single-wire, single-direction beverage feedpoint 
transformer and termination set for...  |   |

  |

  |

 

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Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Wednesday 160m DX Activity Night

[VK3HJ]

The past few evenings all I've been noticed by are RBN, apart from a few 
die-hard Top Banders like AA1K, K4IQJ and DU7ET.


These are some of the blokes who don't let a few summer atmospherics deter 
them.


73,

Luke VK3HJ 


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Topband: Progress to solar minimum and early indicators of Cycle 25 intensity

[donovanf]

Solar precursors correlating solar physical phenomena with the level 
of future solar activity are much better indicators of the progress of 
a broad phase of the solar cycle -- solar minimum -- than forecasting 
a specific event such as the bottom of a broad solar minimum by 
observing the statistics of numeric values such as solar flux. 


Here's an example of how one solar precursor -- spotless day s -- 
can be used to assess our progress towards solar minimum. 


We entered the Cycle 24 solar cycle minimum with the onset of 
eight spotless days in June 2016. We had only 32 spotless days in 
2016. 


We had 15 spotless days in a row in March 2017, followed by relatively 
infrequent spotless days for the next seven months. The frequency 
of occurrence of s potless days accelerated in early November 2017 
when we had 13 spotless days in a row followed by many more 
frequent spotless days over the next five months. We had 104 
spotless days during 2017. 


The frequency of spotless accelerated again last month when we 
had 25 spotless days. W e've already had 54 spotless days during the 
first 25% of 2018. 


So where are we in our progress to solar minimum? 


This chart shows the number of spotless days -- in red -- since the 
tenth spotless day of the onset of solar minimum in July 2016. 
Shown in blue are the average numbers of spotless days during 
sunspot minimums following sunspot cycles similar to cycle 24. 
This data suggests that we have just begun a period of very frequent 
spotless days for at least the next two years. 


http://www.sidc.be/silso/IMAGES/GRAPHICS/spotlessJJ/SC25_month1015.png 


The next s olar precursor is frequent long periods of spot-free days. 
We had a 14 day period of spotless days in 2016, 15 in a row 
in March 2017, 13 in a row in November 2017, and 14 in a row 
early last month. Long periods of spotless days will become even 
more frequent a s we go deeper into solar minimum. 


We'll see another important solar precursor as long periods of spotless 
days become more frequent. N ew high latitude, opposite polarity 
Cycle 25 sunspots will begin to appear more frequently , perhaps by 
late next year. More frequent Cycle 25 sunspots will signal that 
we're approaching the bottom of the solar minimum phase of the 
s olar cycle. 


So what about the intensity of the next solar cycle? 


An ongoing solar precursor of the intensity of Cycle 25 is the intensity 
of the solar magnetic fields prior to our current solar minimum. 
The good news is that the solar magnetic field strength is already 
slightly stronger than it was prior to the last solar minimum which 
suggests that Cycle 25 will be somewhat stronger that Cycle 24. 


73 
Frank 
W3LPL 





- Original Message -

From: "Jim Miller"  
To: "brian"  
Cc: "PVRC"  
Sent: Wednesday, April 4, 2018 2:53:26 PM 
Subject: Re: [PVRC] SFI theoretical minimum? 


At 68 today and for the past few, we're pretty near the bottom. 


Thanks all 


Jim ab3cv 


On Wed, Apr 4, 2018 at 10:47 AM, brian < als...@comcast.net > wrote: 


https://wattsupwiththat.com/2008/07/16/sun-in-deep-slumber-107-solar-flux-hits-record-low-value/
 

Indicates that the theoretical minimum is 67. However, values lower that this 
have been measured (e.g. lowest ever 64.4 in 1954). The observed values lower 
than 67 are attributable to the elliptical orbit of the Earth. When the earth 
is further from the sun, lower measured values than 67 are possible. The 
article points out that if corrections are made for this orbital distance 
effect, values lower than 67 don't occur. 

73 de Brian/K3KO 

On 4/4/2018 14:08 PM, Alfred Laun wrote: 


Jim: 

Actually SFI=66 is a rule of thumb which I have used for years as being 
the theoretical minimum possible SFI. I don't know where I originally 
got that info and indeed, now that you mention it, I may very well be 
wrong. Indeed during the most recent solar minimum the SFI did plunge 
to SFI=64 point something on one occasion. And, to quote G3YWX: "The 
figure for the solar flux can vary from as low as 50 or so to as high as 
300." 
See https://www.arrl.org/files/file/Technology/tis/info/pdf/0209038.pdf 

I'm sure Frank, W3LPL knows a lot more about this than I do. 

73, Fred, K3ZO 


On Wed, Apr 4, 2018 at 8:56 AM, Jim Miller < j...@jtmiller.com 
> wrote: 

Hi Fred 

You mentioned in one of your recent contest posts that the SFI was 
near its theoretical minimum of 66. How is that minimum known? 

Thanks 

Jim ab3cv 

ps. always learn something new from your posts! 
pps. feel free to reply on the reflector if you like 



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Re: Topband: 80 meter 4-square

[Mike Smith VE9AA]

If I've learned anything in my 40yrs a ham, then I know you'll get replies
from all sides.

 

I'll just advise you to build it and see.

 

A couple years ago I asked a similar type of question about a 4Sq array of
wire inverted L's

in the sloping woods.  I have 2 raised radials per. (I also have them on 40
& 20)

Got lots of replies that it wouldn't work, or wouldn't work well.  Both 80
and 40 work great.

I had a 2el array of low inverted L's on 160m (needs repair now_)

 

The 80m one works well. It doesn't work "VY2ZM, K1LZ or VE1ZZ" well, but it
works.

 

Build it and they will come.

 

Mike VE9AA..

 

Hello Guys and Gals,

 

 

I have been planning on building an 80 meter 4-Square around my 117' tower.
I 

know it will likely require detuning the tower to make it 'invisable' to the


4-square so that is probably in the cards. Because of the difficulty of my 

particular location have to consider shifting the array a bit. Wondering if 

offsetting it from the tower a couple of feet to the east would matter? I've


also thought about slightly orienting the 4-square instead of on N-S-E-W to 

turn it like 10 degrees where the north-south lineup of verticals would be
more 

like 10 degrees - 190 degrees and the east west accordingly. The reason for 

this would be that the side hill to the NE where I have my one vertical has 

about 5 foot dropoff to the level ground. Basically I like in a gorge area
with 

a seasonal creek through it but you deal with what you have of course.

 

 

Any thoughts pro or con?

 

 

Terry

 

KI7M

 

 

Mike, Coreen & Corey

Keswick Ridge, NB

 

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Topband Reflector Archives - http://www.contesting.com/_topband

Topband: OH0Z to W/VE 160m season 2017-18

[Jukka Sirviö]

There were quite a few good openings this season. We took down our E/W slopers 
just before CQWW CW and replaced them with 2 top loaded phased verticals 
(vertical height about 30m). The new antenna seemed to work as expected by 
simulations and showed up to be clearly better on low angle conditions. A few 
East Coast stations also worked us with very low power (like 5 or 10 watts) for 
a 2nd or 3rd QSO. 

73 Jukka OH6DD


OH0Z 160m W/VE summary: 

911 QSOs, 623 unique calls (574 USA, 49 VE)

Zone 5: 380 unique calls
Zone 4: 209
Zone 3: 34

1st QSO: Nov 6 2017
Last QSO: Feb 13 2018

ZONE 5
NY 53 unique calls
PA 42
VA 35
MA 34
FL 30
MD 29
NC 25
NH 23
GA 18
NJ 17
CT 16
ME 13
SC 7
WV 6
RI 5
VT 4
DE 3

QC 7
NB 6
NS 4
PE 2
NF 1

ZONE 4
OH 29 unique calls
MI 21
IL 16
TX 14
TN 13
WI 13
MO 12
IN 9
KY 9
CO 8
MN 8
IA 6
AL 5
OK 4
MS 4
LA 4
AR 3
NM 3
MT 1

ON 23
SK 2
AB 2

ZONE 3
AZ 12 unique calls
WA 7
OR 5
CA 3
UT 3
ID 1
NV 1

BC 2

US states not worked: HI (KH7XS hrd), AK, WY, ND, SD, NE, KS.
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Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: 80 meter 4-square

[Bryon Paul Veal NØAH]

I think a 1/2 wave diamond array 4 square would look and work great since your 
tower is at 117 feet

Get Outlook for Android


From: Topband  on behalf of terry burge 

Sent: Tuesday, April 3, 2018 11:11:18 PM
To: topband@contesting.com
Subject: Topband: 80 meter 4-square

Hello Guys and Gals,


I have been planning on building an 80 meter 4-Square around my 117' tower. I 
know it will likely require detuning the tower to make it 'invisable' to the 
4-square so that is probably in the cards. Because of the difficulty of my 
particular location have to consider shifting the array a bit. Wondering if 
offsetting it from the tower a couple of feet to the east would matter? I've 
also thought about slightly orienting the 4-square instead of on N-S-E-W to 
turn it like 10 degrees where the north-south lineup of verticals would be more 
like 10 degrees - 190 degrees and the east west accordingly. The reason for 
this would be that the side hill to the NE where I have my one vertical has 
about 5 foot dropoff to the level ground. Basically I like in a gorge area with 
a seasonal creek through it but you deal with what you have of course.


Any thoughts pro or con?


Terry

KI7M

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