Google has the antenna reviewed on e-ham. Specs should be out there
Bill Jenkins w6jex
sent from my i-Pad
> On Jun 17, 2016, at 2:09 PM, vhfcontesting-request@contesting.com wrote:
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> Today's Topics:
>
> 1. Re: Telescoping mast (Zack Widup)
> 2. Re: Telescoping mast (Floyd Rodgers)
> 3. Re: [VHF] Telescoping mast (Zack Widup)
> 4. Need info KMA LP 4113 antenna (Rick R)
> 5. Re: Need info KMA LP 4113 antenna (Mike (KA5CVH) Urich)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 17 Jun 2016 13:16:37 -0500
> From: Zack Widup <w9sz.zack@gmail.com>
> To: VHF Contesting Reflector <vhfcontesting@contesting.com>, VHF
> REFLECTOR <vhf@w6yx.stanford.edu>
> Subject: Re: [VHFcontesting] Telescoping mast
> Message-ID:
> <CANJxhWg=P889rwxR8tWoUE7MB9+BEjSzV3HV=Q6oqG1WANd=aA@mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> I've received quite a few replies from people about this. Thanks to all of
> those who replied!
>
> Several people have said they have used EMT pipe as masts, and quite a few
> people have told me not to use it because it bends easily. A few people
> recommended fiberglass and a few said not to use fiberglass. So I'm not
> completely sure which way I'm going to go, but I didn't say in my original
> posting what I wanted it for.
>
> I have been doing portable operations for many years using the Radio Shack
> stackable 5-foot long steel mast sections. I have used these to put up
> antennas up to 20 feet using a very simple tilt-over base. I have no
> problem with that arrangement with Yagis for 144 MHz and up. But my 6 meter
> beam is unwieldy. It is four elements on a 13 foot boom. It's difficult for
> me to put it up by myself using a tilt-over base. It's difficult to balance
> one end of the beam on the ground while fastening it to the mast and
> raising it. Once a strong wind caught the antenna and tilted it as I was
> putting it up, snapping off half of the reflector.
>
> So I figure if I can mount some sort of telescoping mast vertically and use
> that to push up the 6m beam, there is less risk of damaging it.
>
> I'm trying to keep the cost down, so I'm looking into aluminum tubing
> sections that nest into the next size up.
>
> 73, Zack W9SZ
>
>
>> On Mon, Jun 13, 2016 at 10:51 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>>
>> Hi, does anyone here have any experience with building a telescoping mast
>> out of EMT pipe sections? Specifically the 1.25, 1.5 and 2 inch O.D. pipes.
>>
>> I'm thinking of making something with them for portable and rover
>> operations.
>>
>> 73, Zack W9SZ
>>
>>
>>
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>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 17 Jun 2016 13:29:42 -0500
> From: Floyd Rodgers <kc5qbc@swbell.net>
> To: Zack Widup <w9sz.zack@gmail.com>, VHF Contesting Reflector
> <vhfcontesting@contesting.com>, VHF REFLECTOR <vhf@w6yx.stanford.edu>
> Subject: Re: [VHFcontesting] Telescoping mast
> Message-ID: <0d26c861-d69a-f053-781d-d132858d05f0@swbell.net>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> You might also consider looking at flagpoles from harbor freight which
> fairly often run on sale.
>
> http://www.harborfreight.com/catalogsearch/result?q=flagpole currently
> $58 for 20 foot unit.
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 17 Jun 2016 13:40:31 -0500
> From: Zack Widup <w9sz.zack@gmail.com>
> To: Mary Brown <maryalanab@gmail.com>
> Cc: VHF Contesting Reflector <vhfcontesting@contesting.com>
> Subject: Re: [VHFcontesting] [VHF] Telescoping mast
> Message-ID:
> <CANJxhWjMxxQkqZk2LhNS1UeO6aCUKO0NVK8Eg4fZM-kAKRqMkw@mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Well, the price is right!
>
> I built the 6m beam from scratch. I think it cost about $40 in parts.
>
> 73, Zack W9SZ
>
>
>> On Fri, Jun 17, 2016 at 1:24 PM, Mary Brown <maryalanab@gmail.com> wrote:
>>
>> Why not go with one of these?
>> http://www.staples.com/Channel-Master-Telescoping-Antenna-Mast-15ft/product_2089811?cid=PS:GooglePLAs:2089811&ci_src=17588969&ci_sku=2089811&KPID=2089811&gclid=CNe8h57Xr80CFRCRaQodEvYG5g
>> with what an antenna costs why risk the damage from something flimsy.
>>
>> -----Original Message-----
>> From: VHF [mailto:vhf-bounces@w6yx.stanford.edu] On Behalf Of Zack Widup
>> via VHF
>> Sent: Friday, June 17, 2016 1:17 PM
>> To: VHF Contesting Reflector; VHF REFLECTOR
>> Subject: Re: [VHF] Telescoping mast
>>
>> I've received quite a few replies from people about this. Thanks to all of
>> those who replied!
>>
>> Several people have said they have used EMT pipe as masts, and quite a few
>> people have told me not to use it because it bends easily. A few people
>> recommended fiberglass and a few said not to use fiberglass. So I'm not
>> completely sure which way I'm going to go, but I didn't say in my original
>> posting what I wanted it for.
>>
>> I have been doing portable operations for many years using the Radio Shack
>> stackable 5-foot long steel mast sections. I have used these to put up
>> antennas up to 20 feet using a very simple tilt-over base. I have no
>> problem with that arrangement with Yagis for 144 MHz and up. But my 6 meter
>> beam is unwieldy. It is four elements on a 13 foot boom. It's difficult for
>> me to put it up by myself using a tilt-over base. It's difficult to balance
>> one end of the beam on the ground while fastening it to the mast and
>> raising it. Once a strong wind caught the antenna and tilted it as I was
>> putting it up, snapping off half of the reflector.
>>
>> So I figure if I can mount some sort of telescoping mast vertically and
>> use that to push up the 6m beam, there is less risk of damaging it.
>>
>> I'm trying to keep the cost down, so I'm looking into aluminum tubing
>> sections that nest into the next size up.
>>
>> 73, Zack W9SZ
>>
>>
>>> On Mon, Jun 13, 2016 at 10:51 AM, Zack Widup <w9sz.zack@gmail.com> wrote:
>>>
>>> Hi, does anyone here have any experience with building a telescoping
>>> mast out of EMT pipe sections? Specifically the 1.25, 1.5 and 2 inch
>> O.D. pipes.
>>>
>>> I'm thinking of making something with them for portable and rover
>>> operations.
>>>
>>> 73, Zack W9SZ
>>>
>>>
>>>
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> ------------------------------
>
> Message: 4
> Date: Fri, 17 Jun 2016 16:44:49 -0400
> From: Rick R <rick1ds@hotmail.com>
> To: vhf contesting <vhfcontesting@contesting.com>
> Subject: [VHFcontesting] Need info KMA LP 4113 antenna
> Message-ID: <BAY169-W13508093D202DF6C6AFF82BFA570@phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I recovered most of this Log Periodic from a local ham, but it was involved
> in a storm and lost several of the larger elements.It has a 12' boom and the
> longest elements are 12' with coverage from 40MHz through 1300MHz.Can anyone
> assist with some measurements so that I can replace the missing pieces. If
> there is a spec sheet, can I get a copy? I know this company no longer
> manufactures this LP. It's sturdy construction and I hope to get it back in
> service. Thanks, Rick, K1DS
>
> ------------------------------
>
> Message: 5
> Date: Fri, 17 Jun 2016 16:08:59 -0500
> From: "Mike (KA5CVH) Urich" <mike@ka5cvh.com>
> To: Rick R <rick1ds@hotmail.com>
> Cc: vhf contesting <vhfcontesting@contesting.com>
> Subject: Re: [VHFcontesting] Need info KMA LP 4113 antenna
> Message-ID:
> <CA+hFFPk-nabk9Lhce5X3N31-yOjfMGJ-i7OgaGcJc9yAhzLE7A@mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
>> On Fri, Jun 17, 2016 at 3:44 PM, Rick R <rick1ds@hotmail.com> wrote:
>> I recovered most of this Log Periodic from a local ham, but it was involved
>
> Mike wrote
>
> I would like to get my hands on a KMA140-460 ... or have the money and
> facility to build them.
>
>
> --
> Mike Urich KA5CVH
> STX: (A)PIC Dist 1 & 14
> PIO Harris County ARES
> http://ka5cvh.com
>
> 100 watts and a wire.
>
>
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> End of VHFcontesting Digest, Vol 162, Issue 21
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