Topband: AS-SAL-30 Shared Apex Loop Array,

[dl8yhrfrank--- via Topband]

hi all
annyone ever did test this setup?How does it perform in reality?
may someone test it ore coud see the difference to HI-Z ore Beverage Antennas?
Anny Info vy welcome
Best wishes
Frank
DL8YHR.DE

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Re: Topband: Shared Apex Loop Array

[Jim Murray via Topband]

CTU 2014 - Session 6 Part 1 - Low Band Receive Antenna Discussion Q - W3LPL

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|   |  |   |   |   |   |   |
| CTU 2014 - Session 6 Part 1 - Low Band Receive Antenna... |
|  |
| View on www.youtube.com | Preview by Yahoo |
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|   |

hi all
annyone ever did test this setup?How does it perform in reality?
may someone test it ore coud see the difference to HI-Z ore Beverage Antennas?
Anny Info vy welcome
Best wishes
Frank
DL8YHR.DE

Frank, Try this.  There are also more videos on the subjectRegards,Jim/k2hn
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Re: Topband: Why do rodents eat coax?

[Terry Posey]

All of my transmission lines are buried except for the single coaxial cable
that feeds my 6m long-boom Yagi.  After 15 years, I have not experienced any
problem with varmints chewing on any of my buried cables, despite being
located in the dense North Florida jungle.  

However, the aerial coax located along the boom of my 6m Yagi was attacked
and destroyed on two occasions several years ago.  The first time, some
critter stripped away the BuryFlex outer sheath, foil and braided shield,
and center dielectric along a 10-foot section of the feedline.  That left
only a skinny center conductor as a very poor transmission line.  At the
time I supposed that it must have been the work of nesting squirrels (tree
rats), so I simply rebuilt the feedline harness for the upcoming Summer Es
skip season.  After a few months the problem returned and the coax was found
stripped away again.  I set aside radio operating for a while and began
watching my 6m tower for evidence of the guilty party.  To my surprise, I
found the culprit to be medium sized woodpecker birds.  Two or three birds
would hang upside down under the Yagi boom and very efficiently strip away
at the coax until the damage was done.   I rebuilt the feedline harness
again, but this time I installed all of the coax on the Yagi inside of
protective grey PVC conduit.  The conduit did increase the antenna wind
loading, but I have not lost a transmission line to birds since then.

YMMV.

Terry K4RX  


W8JI wrote in part:

Squirrels and rats can be a problem, but mostly my cable chew issues have
been from raccoons. I used to trap them and deport them a few miles.

Now I just I bury my cables. Even a few inches of dirt is enough. Where they
come up out of ground, I sleeve them with cheap plastic sprinkler pipe.

You can splice out the bad areas, but you have to bury, sleeve, or fix
whatever is eating it.



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Re: Topband: get some old garden hose

[Barry N1EU]

Except rodents definitely love garden hose.

Barry N1EU

On Tue, Nov 10, 2015 at 6:31 AM, Charles Yahrling 
wrote:

> Get some old garden hose and use it as an above-the-ground conduit. beats
> taking it to the transfer station.
>
> --
> de AB1VL
> NAQCC #6799
>
> ab1vl.com
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>
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Re: Topband: Shared Apex Loop Array

[Ron Feutz]

K9CT used one this year.  He also has an 8 circle (not sure which one).

KK9K

-Original Message- 
From: Gary K9GS

Sent: Tuesday, November 10, 2015 7:54 PM
To: topband@contesting.com
Subject: Re: Topband: Shared Apex Loop Array

Does anyone know if there is another source available for this besides
YouTube?  The PowerPoint slides are unreadable except when they are
zoomed in (briefly).



On 11/10/2015 4:46 PM, Jim Murray via Topband wrote:
CTU 2014 - Session 6 Part 1 - Low Band Receive Antenna Discussion Q - 
W3LPL


|   |
|   |  |   |   |   |   |   |
| CTU 2014 - Session 6 Part 1 - Low Band Receive Antenna... |
|  |
| View on www.youtube.com | Preview by Yahoo |
|  |
|   |

hi all
annyone ever did test this setup?How does it perform in reality?
may someone test it ore coud see the difference to HI-Z ore Beverage 
Antennas?

Anny Info vy welcome
Best wishes
Frank
DL8YHR.DE

Frank, Try this.  There are also more videos on the 
subjectRegards,Jim/k2hn

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--
73,

Gary K9GS

Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com
CW Ops #1032   http://www.cwops.org



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Re: Topband: shared apex loop array

[Anthony Scandurra]

Here's the correct URL:

http://www.contestuniversity.com/attachments/W3LPL_Receiving_Antennas_2014.pptx

73, Tony K4QE

On Tue, Nov 10, 2015 at 9:26 PM, Jim Murray via Topband <
topband@contesting.com> wrote:

> Sri can't seem to get these links to work.  This is listed on Google then
> follow receiving antennas, etc.  Last try- hopefully it works.
>
> W3LPL - Contest University
> www.contestuniversity.com/.../W3LPL_Receiving_Antennas_2014.pptx
>-
>-
> Receiving Antennas - or - What happened to the. Beverages at K3LR
> and W3LPL? directive antennas for small lots; higher performance for larger
> lots; very high ...Regards,jim/k2hn
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
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Re: Topband: shared apex loop array

[Jim Murray via Topband]

Sri can't seem to get these links to work.  This is listed on Google then 
follow receiving antennas, etc.  Last try- hopefully it works.

W3LPL - Contest University
www.contestuniversity.com/.../W3LPL_Receiving_Antennas_2014.pptx   
   - 
   - 
Receiving Antennas - or - What happened to the. Beverages at K3LR and W3LPL? 
directive antennas for small lots; higher performance for larger lots; very 
high ...Regards,jim/k2hn
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Re: Topband: Why do rodents eat coax?

[HAROLD SMITH JR]

Dave, I converted to phillistrand 6700lb about 25 years ago. At that time their 
termination was with 4 cable clamps at each end. They were torqued to 25 ft/lbs 
as per instructions. I have 80ft Rohn 45G with a Telrex 20M546 at 81 ft, Hygain 
153BAS at 90 ft and a 103BAS at 100ft. My phillistrand ends are connected to 3 
1/2inch galv pipe in the ground with concrete to 10 ft below. They are above 
ground at 8 ft. I have had winds over 100 mph and all is well. I use an Orion 
2800 rotor. 
73 de Price W0RI 


 On Monday, November 9, 2015 9:09 PM, "Dave Blaschke, w5un"  
wrote:
   

 Same here.

W5UN

On 11/10/2015 1:00 AM, Herbert Schoenbohm wrote:
> I use Phyllistran guy wires here but never run them to the ground as a 
> simple brush fire could bring your towers down. Always have at least a 
> 3O foot steel guy wire for the last section so you guys will survive.  
> If you have the unusual situation where some rodents will try to climb 
> the guys just put a large funnel on the wire backward so they can't 
> ever pass that.
>
> Herb Schoenbohm, KV4FZ
>
> On 11/9/2015 8:24 PM, Merv Schweigert wrote:
>> Boxbe  This message is eligible for 
>> Automatic Cleanup! (k...@flex.com) Add cleanup rule 
>> 
>>  
>> | More info 
>> 
>>  
>>
>> I have this same problem all the time,  I tried to put a BOG out, 
>> made of teflon wire,
>> thinking they would not eat teflon,  it lasted a few days and was chewed
>> In pieces,  Coax the same,
>> Latest I found is my phyllistran guy wires are all chewed near the 
>> bottom,
>> herds of deer are the problem with that,  anything on the ground is done
>> away with by mongoose.
>> I have found no solution,  only sunny part is the deer keep me in 
>> steaks and
>> burger all year round,  mongoose is good for nothing.
>> Merv K9FD/KH6
>>
>>
>>
>> I can't afford to spend $150 each time an animal feasts on it. I need 
>> to do something different! Incidentally, the beverage still has great 
>> directivity, but signals are very weak with the bad cable. It is 
>> barely useable now as a result. 73 Dave K1WHS
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Topband: get some old garden hose

[Charles Yahrling]

Get some old garden hose and use it as an above-the-ground conduit. beats
taking it to the transfer station.

-- 
de AB1VL
NAQCC #6799

ab1vl.com
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Re: Topband: Rats, Rodents AND Beavers

[K0EKL]

Mice, rats, beavers? Kid stuff! I just found that a black bear had been
gnawing on my Andrew 1/2 hard line.

The SWR on my 160 vertical was off the chart so I started inspecting the
feedline this past Saturday. The antenna is 200 feet from the house. The
soil is too rocky to bury anything except with a large backhoe so I ran
hardline across the forest floor to my 160 wire vertical. (Supported by a
couple 120' white pines.) I thought hardline would surely be safe from
rodent damage but I didn't count on Ursus Americanus. I had to scrap about
20 feet of cable that had punctures clear through the plastic jacket and
copper shield. In at least one place the shield and center were shorted
together resulting in a dead short.

de K0EKL
Ely, MN, where bears are numerous and DXers are few.



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Re: Topband: shared apex loop array

[Gary K9GS]

Thank you Tony!

On 11/10/2015 8:35 PM, Anthony Scandurra wrote:

Here's the correct URL:

http://www.contestuniversity.com/attachments/W3LPL_Receiving_Antennas_2014.pptx

73, Tony K4QE

On Tue, Nov 10, 2015 at 9:26 PM, Jim Murray via Topband <
topband@contesting.com> wrote:


Sri can't seem to get these links to work.  This is listed on Google then
follow receiving antennas, etc.  Last try- hopefully it works.

W3LPL - Contest University
www.contestuniversity.com/.../W3LPL_Receiving_Antennas_2014.pptx
-
-
Receiving Antennas - or - What happened to the. Beverages at K3LR
and W3LPL? directive antennas for small lots; higher performance for larger
lots; very high ...Regards,jim/k2hn
_
Topband Reflector Archives - http://www.contesting.com/_topband

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--
73,

Gary K9GS

Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com
CW Ops #1032   http://www.cwops.org



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