[TowerTalk] TowerTalk Digest, Vol 231, Issue 13

Sat Mar 19 19:36:09 EDT 2022

         GE Jamie

             In my case right now I have a TH5  6 ft above my 2 element 
40 mtr beam.  All I can

             say is if I can hear it, I usually can work it!  This is 
with 150 watts . Both beams point

             in same direction.  TH5  @ 75 ft       2 el 40@ 68 ft.

                         73  BoB WA1FCN

On 3/19/2022 5:10 AM, towertalk-request at contesting.com wrote:
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> Today's Topics:
>
>     1. separation between 40m rotary dipole and 3 element beam
>        (Jamie WW3S)
>     2. Re: separation between 40m rotary dipole and 3 element beam
>        (George Dubovsky)
>     3. Re: separation between 40m rotary dipole and 3 element beam (Don)
>     4. Re: separation between 40m rotary dipole and 3 element beam
>        (Ron WV4P)
>     5. Re: separation between 40m rotary dipole and 3 element beam
>        (Jim Brown)
>     6. 75 ohm version of the Budwig HQ-1 Dipole dipole adapter
>        (Martin Flynn)
>     7. Re: 75 ohm version of the Budwig HQ-1 Dipole dipole adapter
>        (Jim Brown)
>     8. Re: 75 ohm version of the Budwig HQ-1 Dipole dipole adapter
>        (Gary K9GS)
>     9. Re: separation between 40m rotary dipole and 3 element beam
>        (J. Hunt)
>    10. Re: 75 ohm version of the Budwig HQ-1 Dipole dipole adapter
>        (Jim Brown)
>    11. Re: 75 ohm version of the Budwig HQ-1 Dipole dipole adapter
>        (john at kk9a.com)
>    12. Re: separation between 40m rotary dipole and 3 element beam
>        (Chuck Dietz)
>    13. Re: separation between 40m rotary dipole and 3 element beam
>        (N1BUG)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 18 Mar 2022 20:36:23 +0000
> From: "Jamie WW3S" <ww3s at zoominternet.net>
> To: TowerTalk <TowerTalk at contesting.com>
> Subject: [TowerTalk] separation between 40m rotary dipole and 3
> 	element beam
> Message-ID: <emc1cc04f4-d191-489b-a80f-5a09844e765b at desktop-eu9mt98>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> What would be an acceptable separation between a 40m rotary dipole and a
> 3 element beam? I can maybe go 8 ft, 7 for sure......I'm fairly certain
> there would be some interaction, but would it be that critical ?
>
> ------------------------------
>
> Message: 2
> Date: Fri, 18 Mar 2022 17:00:59 -0400
> From: George Dubovsky <n4ua.va at gmail.com>
> To: Jamie WW3S <ww3s at zoominternet.net>
> Cc: TowerTalk <TowerTalk at contesting.com>
> Subject: Re: [TowerTalk] separation between 40m rotary dipole and 3
> 	element beam
> Message-ID:
> 	<CAALHBrbK+vzP-h=1gPtBeX-pLAjP12_eps=0X6NHvg_pK-92Zw at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> You will almost certainly have to orient the 40 m dipole at 90 degrees to
> the beam (parallel with the tri-bander boom) to avoid interaction with 15
> meters. 5' separation is usually enough.
>
> 73,
>
> geo - n4ua
>
> On Fri, Mar 18, 2022 at 4:36 PM Jamie WW3S <ww3s at zoominternet.net> wrote:
>
>> What would be an acceptable separation between a 40m rotary dipole and a
>> 3 element beam? I can maybe go 8 ft, 7 for sure......I'm fairly certain
>> there would be some interaction, but would it be that critical ?
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 18 Mar 2022 14:24:29 -0700
> From: Don <w7wll at peak.org>
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] separation between 40m rotary dipole and 3
> 	element beam
> Message-ID: <1e532c2d-f559-1d92-ce66-fb6a71807173 at peak.org>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> My TH7DXX is at 72 feet. When I had a 2 el 40 up 6 feet above it I
> experienced no _discernible_ negative affect on either. Surely there was
> some, but not noticeable.
>
> Don W7WLL
>
> On 3/18/2022 2:00 PM, George Dubovsky wrote:
>> You will almost certainly have to orient the 40 m dipole at 90 degrees to
>> the beam (parallel with the tri-bander boom) to avoid interaction with 15
>> meters. 5' separation is usually enough.
>>
>> 73,
>>
>> geo - n4ua
>>
>> On Fri, Mar 18, 2022 at 4:36 PM Jamie WW3S<ww3s at zoominternet.net>  wrote:
>>
>>> What would be an acceptable separation between a 40m rotary dipole and a
>>> 3 element beam? I can maybe go 8 ft, 7 for sure......I'm fairly certain
>>> there would be some interaction, but would it be that critical ?
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
> ------------------------------
>
> Message: 4
> Date: Fri, 18 Mar 2022 16:34:27 -0500
> From: Ron WV4P <wv4ptn at gmail.com>
> To: w7wll at peak.org
> Cc: towertalk <towertalk at contesting.com>
> Subject: Re: [TowerTalk] separation between 40m rotary dipole and 3
> 	element beam
> Message-ID:
> 	<CAPQMqndnCYzFN30noG1Mzgeq1XC89C7QTS17gHQxXUObT--OtA at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> What band is the 3 el beam ?
>
> Ron, WV4P
>
> On Fri, Mar 18, 2022 at 4:25 PM Don <w7wll at peak.org> wrote:
>
>> My TH7DXX is at 72 feet. When I had a 2 el 40 up 6 feet above it I
>> experienced no _discernible_ negative affect on either. Surely there was
>> some, but not noticeable.
>>
>> Don W7WLL
>>
>> On 3/18/2022 2:00 PM, George Dubovsky wrote:
>>> You will almost certainly have to orient the 40 m dipole at 90 degrees to
>>> the beam (parallel with the tri-bander boom) to avoid interaction with 15
>>> meters. 5' separation is usually enough.
>>>
>>> 73,
>>>
>>> geo - n4ua
>>>
>>> On Fri, Mar 18, 2022 at 4:36 PM Jamie WW3S<ww3s at zoominternet.net>
>> wrote:
>>>> What would be an acceptable separation between a 40m rotary dipole and a
>>>> 3 element beam? I can maybe go 8 ft, 7 for sure......I'm fairly certain
>>>> there would be some interaction, but would it be that critical ?
>>>> _______________________________________________
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> TowerTalk mailing list
>>>> TowerTalk at contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>>
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
> ------------------------------
>
> Message: 5
> Date: Fri, 18 Mar 2022 15:40:08 -0700
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] separation between 40m rotary dipole and 3
> 	element beam
> Message-ID:
> 	<36c3d379-a79d-7782-8af0-078aac2a2df9 at audiosystemsgroup.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> On 3/18/2022 1:36 PM, Jamie WW3S wrote:
>> What would be an acceptable separation between a 40m rotary dipole and a
>> 3 element beam?
> The same stub carefully placed as described in this link in the 40M
> feedline to suppress the second harmonic of 40M will also kill
> interaction of that 40M dipole with 20M. The first link is text, the
> second is the slide deck for talks I've done on the technique.
>
> http://k9yc.com/LocatingStubs.pdf
> http://k9yc.com/StubPlacement.pdf
>
> 73, Jim K9YC
>
>
> ------------------------------
>
> Message: 6
> Date: Fri, 18 Mar 2022 19:04:49 -0400
> From: Martin Flynn <maflynn at theflynn.org>
> To: towertalk at contesting.com
> Subject: [TowerTalk] 75 ohm version of the Budwig HQ-1 Dipole dipole
> 	adapter
> Message-ID: <e80950b8-dea3-c0fe-0cac-4fc235d1fd10 at theflynn.org>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Before I re-invent the wheel, anyone aware of a 75 ohm version with an F
> connector?
>
> 73 Martin
> W2RWJ
>
>
>
> ------------------------------
>
> Message: 7
> Date: Fri, 18 Mar 2022 16:14:57 -0700
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] 75 ohm version of the Budwig HQ-1 Dipole
> 	dipole adapter
> Message-ID:
> 	<38e32a02-0089-20a5-7f07-988f670c060d at audiosystemsgroup.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> On 3/18/2022 4:04 PM, Martin Flynn wrote:
>> Before I re-invent the wheel, anyone aware of a 75 ohm version with an F
>> connector?
> F-connectors ARE 75 ohms -- they were developed for the CATV/MATV
> industry, which runs on 75 ohms, and their design has gone through
> considerable evolution since I first used them in the '70s. Today's
> F-connectors are FAR superior to those I installed in Lake Shore Drive
> high rises and Sears Tower.
>
> 73, Jim K9YC
>
>
> ------------------------------
>
> Message: 8
> Date: Fri, 18 Mar 2022 19:23:12 -0400
> From: Gary K9GS <k9gs at gjschwartz.com>
> To: Martin Flynn <maflynn at theflynn.org>, towertalk at contesting.com
> Subject: Re: [TowerTalk] 75 ohm version of the Budwig HQ-1 Dipole
> 	dipole adapter
> Message-ID: <mailman.14240.1647684652.2163.towertalk at contesting.com>
> Content-Type: text/plain; charset=utf-8
>
> They do not show one on their website?Maybe call them?73,Gary K9GS
> -------- Original message --------From: Martin Flynn <maflynn at theflynn.org> Date: 3/18/22  7:05 PM  (GMT-05:00) To: towertalk at contesting.com Subject: [TowerTalk] 75 ohm version of the Budwig HQ-1 Dipole dipole adapter Before I re-invent the wheel, anyone aware of a 75 ohm version with an F connector?73 MartinW2RWJ______________________________________________________________________________________________TowerTalk mailing listTowerTalk at contesting.comhttp://lists.contesting.com/mailman/listinfo/towertalk
>
> ------------------------------
>
> Message: 9
> Date: Fri, 18 Mar 2022 23:26:48 +0000 (UTC)
> From: "J. Hunt" <ki5dq at yahoo.com>
> To: "towertalk at contesting.com" <towertalk at contesting.com>, 	Jim Brown
> 	<jim at audiosystemsgroup.com>
> Subject: Re: [TowerTalk] separation between 40m rotary dipole and 3
> 	element beam
> Message-ID: <287189407.788084.1647646009005 at mail.yahoo.com>
> Content-Type: text/plain; charset=UTF-8
>
>   Have my 40 meter rotary dipole 8' above the quad band beam, parallel with the beams boom, opposite side of the mast pipe.?
> The opposite side cancels some of the shear forces on the HyGain Tx2 rotor.
> Cheers,Jameski5dq
>
>      On Friday, March 18, 2022, 05:40:26 PM CDT, Jim Brown <jim at audiosystemsgroup.com> wrote:
>   
>   On 3/18/2022 1:36 PM, Jamie WW3S wrote:
>> What would be an acceptable separation between a 40m rotary dipole and a
>> 3 element beam?
> The same stub carefully placed as described in this link in the 40M
> feedline to suppress the second harmonic of 40M will also kill
> interaction of that 40M dipole with 20M. The first link is text, the
> second is the slide deck for talks I've done on the technique.
>
> http://k9yc.com/LocatingStubs.pdf
> http://k9yc.com/StubPlacement.pdf
>
> 73, Jim K9YC
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>    
>
> ------------------------------
>
> Message: 10
> Date: Fri, 18 Mar 2022 16:59:53 -0700
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] 75 ohm version of the Budwig HQ-1 Dipole
> 	dipole adapter
> Message-ID:
> 	<48fc3a61-a754-ca4b-991c-608887b3e057 at audiosystemsgroup.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Sorry, I misread the original post. :)
>
> 73, Jim K9YC
>
>    3/18/2022 4:04 PM, Martin Flynn wrote:
>> Before I re-invent the wheel, anyone aware of a 75 ohm version with an F
>> connector?
>
>
> ------------------------------
>
> Message: 11
> Date: Fri, 18 Mar 2022 21:06:10 -0400
> From: <john at kk9a.com>
> To: <towertalk at contesting.com>
> Subject: Re: [TowerTalk] 75 ohm version of the Budwig HQ-1 Dipole
> 	dipole adapter
> Message-ID: <000b01d83b2d$86121a10$92364e30$@com>
> Content-Type: text/plain;	charset="us-ascii"
>
> I doubt that it exists, it is difficult enough to find the power rating of
> an F connector.
>
> John KK9A
>
> Martin Flynn W2RWJ
>
> Before I re-invent the wheel, anyone aware of a 75 ohm version with an F
> connector?
>
> 73 Martin
> W2RWJ
>
>
>
> ------------------------------
>
> Message: 12
> Date: Fri, 18 Mar 2022 20:16:12 -0500
> From: Chuck Dietz <w5prchuck at gmail.com>
> To: "J. Hunt" <ki5dq at yahoo.com>
> Cc: Jim Brown <jim at audiosystemsgroup.com>, 	"towertalk at contesting.com"
> 	<towertalk at contesting.com>
> Subject: Re: [TowerTalk] separation between 40m rotary dipole and 3
> 	element beam
> Message-ID:
> 	<CAOk0j1-FLgn4iWbE_vj2ksOn7zuGqgq7mjCndWgr0XN7my02fg at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> I don?t see how putting antennas on the opposite side of the mast does
> anything. They are still connected to the same mast and exerting forces in
> the same direction according to the wind resistance on either side of the
> mast. Visualize mounting the beam on a mast at 5 feet above ground. If you
> push on one end of the beam, it exerts the same force on the mast and in
> the same direction no matter which side of the mast it is mounted on.
> I used to believe this until I thought it through.
>
> Chuck W5PR
>
> On Fri, Mar 18, 2022 at 6:27 PM J. Hunt via TowerTalk <
> towertalk at contesting.com> wrote:
>
>>   Have my 40 meter rotary dipole 8' above the quad band beam, parallel with
>> the beams boom, opposite side of the mast pipe.
>> The opposite side cancels some of the shear forces on the HyGain Tx2 rotor.
>> Cheers,Jameski5dq
>>
>>      On Friday, March 18, 2022, 05:40:26 PM CDT, Jim Brown <
>> jim at audiosystemsgroup.com> wrote:
>>
>>   On 3/18/2022 1:36 PM, Jamie WW3S wrote:
>>> What would be an acceptable separation between a 40m rotary dipole and a
>>> 3 element beam?
>> The same stub carefully placed as described in this link in the 40M
>> feedline to suppress the second harmonic of 40M will also kill
>> interaction of that 40M dipole with 20M. The first link is text, the
>> second is the slide deck for talks I've done on the technique.
>>
>> http://k9yc.com/LocatingStubs.pdf
>> http://k9yc.com/StubPlacement.pdf
>>
>> 73, Jim K9YC
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
> ------------------------------
>
> Message: 13
> Date: Sat, 19 Mar 2022 06:10:49 -0400
> From: N1BUG <paul at n1bug.com>
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] separation between 40m rotary dipole and 3
> 	element beam
> Message-ID: <54d6d7ee-2c43-540d-5c25-b4cfd4c49b9b at n1bug.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> The answer is likely "it depends on the specific antennas involved".
>
> Last year I placed an OptiBeam OB1-4030 about 9 feet above my TH11DX. I
> did not rotate it 90 degrees. The elements are parallel. I am sure there
> is some interaction but I cannot notice a change in pattern or SWR on
> any band.
>
> Paul N1BUG
>
>
> On 3/18/22 17:24, Don wrote:
>> My TH7DXX is at 72 feet. When I had a 2 el 40 up 6 feet above it I
>> experienced no _discernible_ negative affect on either. Surely there was
>> some, but not noticeable.
>>
>> Don W7WLL
>>
>> On 3/18/2022 2:00 PM, George Dubovsky wrote:
>>> You will almost certainly have to orient the 40 m dipole at 90 degrees to
>>> the beam (parallel with the tri-bander boom) to avoid interaction with 15
>>> meters. 5' separation is usually enough.
>>>
>>> 73,
>>>
>>> geo - n4ua
>>>
>>> On Fri, Mar 18, 2022 at 4:36 PM Jamie WW3S<ww3s at zoominternet.net>? wrote:
>>>
>>>> What would be an acceptable separation between a 40m rotary dipole and a
>>>> 3 element beam? I can maybe go 8 ft, 7 for sure......I'm fairly certain
>>>> there would be some interaction, but would it be that critical ?
>>>> _______________________________________________
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> TowerTalk mailing list
>>>> TowerTalk at contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>>
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
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>
>
> ------------------------------
>
> End of TowerTalk Digest, Vol 231, Issue 13
> ******************************************