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CX2SA > SATDIG 05.08.15 21:56l 1037 Lines 33390 Bytes #999 (0) @ WW
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Sent: 150805/1947Z @:CX2SA.SAL.URY.SOAM #:25147 [Salto] FBB7.00e $:AMSATBB10234
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Screw threads on Arrow? (David)
2. Re: Screw threads on Arrow? (Matt Patterson)
3. Re: Screw threads on Arrow? (John Brier)
4. Re: Antennas (Joe Fitzgerald)
5. Re: Screw threads on Arrow? (KA9QJG)
6. Re: Screw threads on Arrow? (Clayton W5PFG)
7. Re: Screw threads on Arrow? (Paul Stoetzer)
8. Re: Screw threads on Arrow? (KA9QJG)
9. Re: Screw threads on Arrow? (R.T.Liddy)
10. Re: Screw threads on Arrow? (Paul Stoetzer)
11. Re: Antennas (Howie DeFelice)
----------------------------------------------------------------------
Message: 1
Date: Wed, 05 Aug 2015 12:38:30 -0400
From: "David" <dwarnberg@xxxxxxx.xxx>
To: "'David'" <dwarnberg@xxxxxxx.xxx>, "'Diane Bruce'" <db@xx.xxx>
Cc: amsat-bb@xxxxx.xxxx "'Don Hoover \(WS4E\)'" <ws4e@xxxx.xxx>
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID: <002e01d0cf9d$29c64860$7d52d920$@xxx>
Content-Type: text/plain; charset=US-ASCII
Actually I found it online.. here is the link...
http://www.arrowantennas.com/parts/p146437-10.html
David, KK4QOE
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
Sent: Wednesday, August 05, 2015 12:33 PM
To: 'Diane Bruce'
Cc: amsat-bb@xxxxx.xxxx 'Don Hoover (WS4E)'
Subject: Re: [amsat-bb] Screw threads on Arrow?
Ahh yes, my mistake... Anyway there is a spare parts list that came with the
antenna (I have it) but it does not list size, it says 2 - 1/4 stud.. but
that does not answer your question..
If you need this list or would like it I can scan it and post it or send it
to you..
Sorry for the confusion
David, KK4QOE
-----Original Message-----
From: Diane Bruce [mailto:db@xx.xxxx
Sent: Wednesday, August 05, 2015 11:58 AM
To: David
Cc: 'David Haworth'; 'Don Hoover (WS4E)'; amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Screw threads on Arrow?
On Wed, Aug 05, 2015 at 11:29:08AM -0400, David wrote:
> If I recall correctly they are the same size as a camera tripod.. so
> they would be a 1/4-20
I was going to answer this then realised he is really talking about the
elements themselves? I've not looked yet.
>
> David, KK4QOE
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
> Haworth
> Sent: Wednesday, August 05, 2015 11:03 AM
> To: Don Hoover (WS4E)
> Cc: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] Screw threads on Arrow?
>
> They look like 8-32
>
>
> > On Aug 5, 2015, at 6:29 AM, Don Hoover (WS4E) <ws4e@xxxx.xxx> wrote:
> >
> > Does anyone know the screw size/threads used for the elements on the
> > dual band Arrow Antenna?
> >
> > I have some that are a little bent and want to start looking for
> > replacements and maybe buy some spares as well.
> >
> > Thanks.
> > Don
> > WS4E
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum
> > available to all interested persons worldwide without requiring
membership.
> > Opinions expressed are solely those of the author, and do not
> > reflect the
> official views of AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
program!
> > Subscription settings:
> > http://www.amsat.org/mailman/listinfo/amsat-bb
>
> 73,
> Clear and dark skies without RFI,
> David Haworth, WA9ONY
> http://www.stargazing.net/david <http://www.stargazing.net/david>
> davidahaworth@xxxxxx.xxx
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the
official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
--
- db@xxxxxxx.xxx db@xx.xxx http://www.db.net/~db
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Wed, 5 Aug 2015 12:46:57 -0500
From: Matt Patterson <mattpatt@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID: <55C24C11.10904@xxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Not sure what they are built out of now but back in the day they were
aluminum arrow shafts. I know because the one I have says Easton on
every element. :)
73 Matt
W5LL
On 8/5/2015 12:11 PM, David Rush wrote:
> I'm fairly certain that mine, purchased more than 10 years ago, is
> using actual arrow shafts, not something based on arrow shafts.
>
> And I'm 95% certain that it's 8-32 threaded rod that connects them. It
> looks like 8-32, and I pulled a random "this looks like an 8-32 nut"
> out of my bin of random machine screws and nuts, and it fit just fine.
>
> 73, David, ky7dr
>
> On 2015-08-05 11:00, Diane Bruce wrote:
>> On Wed, Aug 05, 2015 at 12:51:15PM -0400, David wrote:
>>> So you guys got me thinking, after looking at these elements and
>>> measuring
>>> it realized something... these look like Aluminum Arrow shafts, and the
>>> inserts might be the arrow broadhead insert.. which all parts are
>>> readily
>>> available at most sporting good stores for building you own arrows
>>> (yes I am
>>> a hunter and used to bow hunt)
>> The commercialised Arrow design was based upon an article on using
>> arrow shafts in an antenna.
>>
>> Not a surprise at all. ;)
>>
>>> I will double check this and let you all know, I'll have to do this
>>> later
>>> today after I'm off work.. but if this is the case replacements
>>> should be
>>> very easily created.
>>>
>>> David, KK4QOE
>>>
>>> -----Original Message-----
>>> From: David [mailto:dwarnberg@xxxxxxx.xxxx
>>> Sent: Wednesday, August 05, 2015 12:39 PM
>>> To: 'David'; 'Diane Bruce'
>>> Cc: amsat-bb@xxxxx.xxxx 'Don Hoover (WS4E)'
>>> Subject: RE: [amsat-bb] Screw threads on Arrow?
>>>
>>> Actually I found it online.. here is the link...
>>> http://www.arrowantennas.com/parts/p146437-10.html
>>>
>>> David, KK4QOE
>>>
>>> -----Original Message-----
>>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
>>> Sent: Wednesday, August 05, 2015 12:33 PM
>>> To: 'Diane Bruce'
>>> Cc: amsat-bb@xxxxx.xxxx 'Don Hoover (WS4E)'
>>> Subject: Re: [amsat-bb] Screw threads on Arrow?
>>>
>>> Ahh yes, my mistake... Anyway there is a spare parts list that came
>>> with the
>>> antenna (I have it) but it does not list size, it says 2 - 1/4
>>> stud.. but
>>> that does not answer your question..
>>>
>>> If you need this list or would like it I can scan it and post it or
>>> send it
>>> to you..
>>>
>>> Sorry for the confusion
>>>
>>> David, KK4QOE
>>>
>>> -----Original Message-----
>>> From: Diane Bruce [mailto:db@xx.xxxx
>>> Sent: Wednesday, August 05, 2015 11:58 AM
>>> To: David
>>> Cc: 'David Haworth'; 'Don Hoover (WS4E)'; amsat-bb@xxxxx.xxx
>>> Subject: Re: [amsat-bb] Screw threads on Arrow?
>>>
>>> On Wed, Aug 05, 2015 at 11:29:08AM -0400, David wrote:
>>>> If I recall correctly they are the same size as a camera tripod.. so
>>>> they would be a 1/4-20
>>> I was going to answer this then realised he is really talking about the
>>> elements themselves? I've not looked yet.
>>>
>>>> David, KK4QOE
>>>>
>>>> -----Original Message-----
>>>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
>>>> Haworth
>>>> Sent: Wednesday, August 05, 2015 11:03 AM
>>>> To: Don Hoover (WS4E)
>>>> Cc: amsat-bb@xxxxx.xxx
>>>> Subject: Re: [amsat-bb] Screw threads on Arrow?
>>>>
>>>> They look like 8-32
>>>>
>>>>
>>>>> On Aug 5, 2015, at 6:29 AM, Don Hoover (WS4E) <ws4e@xxxx.xxx> wrote:
>>>>>
>>>>> Does anyone know the screw size/threads used for the elements on the
>>>>> dual band Arrow Antenna?
>>>>>
>>>>> I have some that are a little bent and want to start looking for
>>>>> replacements and maybe buy some spares as well.
>>>>>
>>>>> Thanks.
>>>>> Don
>>>>> WS4E
>>>>> _______________________________________________
>>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum
>>>>> available to all interested persons worldwide without requiring
>>> membership.
>>>>> Opinions expressed are solely those of the author, and do not
>>>>> reflect the
>>>> official views of AMSAT-NA.
>>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>> program!
>>>>> Subscription settings:
>>>>> http://www.amsat.org/mailman/listinfo/amsat-bb
>>>> 73,
>>>> Clear and dark skies without RFI,
>>>> David Haworth, WA9ONY
>>>> http://www.stargazing.net/david <http://www.stargazing.net/david>
>>>> davidahaworth@xxxxxx.xxx
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>>> to all interested persons worldwide without requiring membership.
>>>> Opinions expressed are solely those of the author, and do not reflect
>>>> the official views of AMSAT-NA.
>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>>> program!
>>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>>
>>>> _______________________________________________
>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>>> to all interested persons worldwide without requiring membership.
>>>> Opinions expressed are solely those of the author, and do not reflect
>>>> the
>>> official views of AMSAT-NA.
>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>>> program!
>>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>>
>>> --
>>> - db@xxxxxxx.xxx db@xx.xxx http://www.db.net/~db
>>>
>>> _______________________________________________
>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum
>>> available to all
>>> interested persons worldwide without requiring membership. Opinions
>>> expressed are solely those of the author, and do not reflect the
>>> official
>>> views of AMSAT-NA.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>> program!
>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>
>>>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed
> are solely those of the author, and do not reflect the official views
> of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
------------------------------
Message: 3
Date: Wed, 5 Aug 2015 14:29:51 -0400
From: John Brier <johnbrier@xxxxx.xxx>
To: mattpatt@xxxxxxxx.xxx
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID:
<CALn0fKO+pzZbCWwc5femifJyMFySMRHDptMYZKF9CJNRRY05JA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Also, the company is Arrow and it's called an Arrow antenna!
On Aug 5, 2015 1:57 PM, "Matt Patterson" <mattpatt@xxxxxxxx.xxx> wrote:
> Not sure what they are built out of now but back in the day they were
> aluminum arrow shafts. I know because the one I have says Easton on every
> element. :)
>
> 73 Matt
> W5LL
>
> On 8/5/2015 12:11 PM, David Rush wrote:
>
>> I'm fairly certain that mine, purchased more than 10 years ago, is using
>> actual arrow shafts, not something based on arrow shafts.
>>
>> And I'm 95% certain that it's 8-32 threaded rod that connects them. It
>> looks like 8-32, and I pulled a random "this looks like an 8-32 nut" out of
>> my bin of random machine screws and nuts, and it fit just fine.
>>
>> 73, David, ky7dr
>>
>> On 2015-08-05 11:00, Diane Bruce wrote:
>>
>>> On Wed, Aug 05, 2015 at 12:51:15PM -0400, David wrote:
>>>
>>>> So you guys got me thinking, after looking at these elements and
>>>> measuring
>>>> it realized something... these look like Aluminum Arrow shafts, and the
>>>> inserts might be the arrow broadhead insert.. which all parts are
>>>> readily
>>>> available at most sporting good stores for building you own arrows (yes
>>>> I am
>>>> a hunter and used to bow hunt)
>>>>
>>> The commercialised Arrow design was based upon an article on using
>>> arrow shafts in an antenna.
>>>
>>> Not a surprise at all. ;)
>>>
>>> I will double check this and let you all know, I'll have to do this later
>>>> today after I'm off work.. but if this is the case replacements should
>>>> be
>>>> very easily created.
>>>>
>>>> David, KK4QOE
>>>>
>>>> -----Original Message-----
>>>> From: David [mailto:dwarnberg@xxxxxxx.xxxx
>>>> Sent: Wednesday, August 05, 2015 12:39 PM
>>>> To: 'David'; 'Diane Bruce'
>>>> Cc: amsat-bb@xxxxx.xxxx 'Don Hoover (WS4E)'
>>>> Subject: RE: [amsat-bb] Screw threads on Arrow?
>>>>
>>>> Actually I found it online.. here is the link...
>>>> http://www.arrowantennas.com/parts/p146437-10.html
>>>>
>>>> David, KK4QOE
>>>>
>>>> -----Original Message-----
>>>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
>>>> Sent: Wednesday, August 05, 2015 12:33 PM
>>>> To: 'Diane Bruce'
>>>> Cc: amsat-bb@xxxxx.xxxx 'Don Hoover (WS4E)'
>>>> Subject: Re: [amsat-bb] Screw threads on Arrow?
>>>>
>>>> Ahh yes, my mistake... Anyway there is a spare parts list that came
>>>> with the
>>>> antenna (I have it) but it does not list size, it says 2 - 1/4 stud..
>>>> but
>>>> that does not answer your question..
>>>>
>>>> If you need this list or would like it I can scan it and post it or
>>>> send it
>>>> to you..
>>>>
>>>> Sorry for the confusion
>>>>
>>>> David, KK4QOE
>>>>
>>>> -----Original Message-----
>>>> From: Diane Bruce [mailto:db@xx.xxxx
>>>> Sent: Wednesday, August 05, 2015 11:58 AM
>>>> To: David
>>>> Cc: 'David Haworth'; 'Don Hoover (WS4E)'; amsat-bb@xxxxx.xxx
>>>> Subject: Re: [amsat-bb] Screw threads on Arrow?
>>>>
>>>> On Wed, Aug 05, 2015 at 11:29:08AM -0400, David wrote:
>>>>
>>>>> If I recall correctly they are the same size as a camera tripod.. so
>>>>> they would be a 1/4-20
>>>>>
>>>> I was going to answer this then realised he is really talking about the
>>>> elements themselves? I've not looked yet.
>>>>
>>>> David, KK4QOE
>>>>>
>>>>> -----Original Message-----
>>>>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of David
>>>>> Haworth
>>>>> Sent: Wednesday, August 05, 2015 11:03 AM
>>>>> To: Don Hoover (WS4E)
>>>>> Cc: amsat-bb@xxxxx.xxx
>>>>> Subject: Re: [amsat-bb] Screw threads on Arrow?
>>>>>
>>>>> They look like 8-32
>>>>>
>>>>>
>>>>> On Aug 5, 2015, at 6:29 AM, Don Hoover (WS4E) <ws4e@xxxx.xxx> wrote:
>>>>>>
>>>>>> Does anyone know the screw size/threads used for the elements on the
>>>>>> dual band Arrow Antenna?
>>>>>>
>>>>>> I have some that are a little bent and want to start looking for
>>>>>> replacements and maybe buy some spares as well.
>>>>>>
>>>>>> Thanks.
>>>>>> Don
>>>>>> WS4E
>>>>>> _______________________________________________
>>>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum
>>>>>> available to all interested persons worldwide without requiring
>>>>>>
>>>>> membership.
>>>>
>>>>> Opinions expressed are solely those of the author, and do not
>>>>>> reflect the
>>>>>>
>>>>> official views of AMSAT-NA.
>>>>>
>>>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>>>>>
>>>>> program!
>>>>
>>>>> Subscription settings:
>>>>>> http://www.amsat.org/mailman/listinfo/amsat-bb
>>>>>>
>>>>> 73,
>>>>> Clear and dark skies without RFI,
>>>>> David Haworth, WA9ONY
>>>>> http://www.stargazing.net/david <http://www.stargazing.net/david>
>>>>> davidahaworth@xxxxxx.xxx
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>>>> to all interested persons worldwide without requiring membership.
>>>>> Opinions expressed are solely those of the author, and do not reflect
>>>>> the official views of AMSAT-NA.
>>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>>>> program!
>>>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>>>
>>>>> _______________________________________________
>>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>>>> to all interested persons worldwide without requiring membership.
>>>>> Opinions expressed are solely those of the author, and do not reflect
>>>>> the
>>>>>
>>>> official views of AMSAT-NA.
>>>>
>>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>>>> program!
>>>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>>>
>>>>> --
>>>> - db@xxxxxxx.xxx db@xx.xxx http://www.db.net/~db
>>>>
>>>> _______________________________________________
>>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>>> to all
>>>> interested persons worldwide without requiring membership. Opinions
>>>> expressed are solely those of the author, and do not reflect the
>>>> official
>>>> views of AMSAT-NA.
>>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>>> program!
>>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>>
>>>>
>>>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed
>> are solely those of the author, and do not reflect the official views of
>> AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 4
Date: Wed, 5 Aug 2015 14:36:10 -0400
From: "Joe Fitzgerald" <jfitzgerald@xxxx.xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Antennas
Message-ID: <68c47b321110445600e7e2a672aabd9d.squirrel@xxxx.xxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
Tom,
You are correct in that the antenna with the smaller effective aparature
will collect less energy in a given time period.
But things are never equal - preamp performance, feedline loss etc. For
satellite antennas, maximizing Gain/Noise Temperature is essential figure
of merit. It does little good to collect lots of energy if that energy
is thermal radiation frin the roof under your antenna!
-Joe KM1P
------------------------------
Message: 5
Date: Wed, 5 Aug 2015 13:41:24 -0500
From: "KA9QJG" <ka9qjg@xxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID: <045b01d0cfae$54dec890$fe9c59b0$@xxxxxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
I have talked to the owner of Arrow a few times asking about His antennas He
was always very Helpful Gave Me a Vet Discount, I am sure with all the
Free Advertisement We are giving Him here He will probably just give you
the screws /parts Info for Free give Him a call
http://www.arrowantennas.com/main/mail.html
73 De Don KA9QJG
PS Old Hams Designs and Makes our own parts LOL
------------------------------
Message: 6
Date: Wed, 5 Aug 2015 13:41:27 -0500
From: Clayton W5PFG <w5pfg@xxxxx.xxx>
To: 'amsat bb' <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID: <55C258D7.7010908@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
If Arrows are made from Arrows, what are Elks made from?
On 8/5/2015 13:29, John Brier wrote:
> Also, the company is Arrow and it's called an Arrow antenna!
> On Aug 5, 2015 1:57 PM, "Matt Patterson" <mattpatt@xxxxxxxx.xxx> wrote:
>
>> Not sure what they are built out of now but back in the day they were
>> aluminum arrow shafts. I know because the one I have says Easton on every
>> element. :)
>>
>> 73 Matt
>> W5LL
------------------------------
Message: 7
Date: Wed, 5 Aug 2015 14:46:11 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Clayton W5PFG <w5pfg@xxxxx.xxx>
Cc: amsat bb <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID:
<CABzOSOrSd5D-BJ515GL5nc6J_PGEMs0bqp_z2z=59hcN=YELVw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Arrows that have been used to hunt Elks and recovered?
73,
Paul, N8HM
On Wed, Aug 5, 2015 at 2:41 PM, Clayton W5PFG <w5pfg@xxxxx.xxx> wrote:
> If Arrows are made from Arrows, what are Elks made from?
>
> On 8/5/2015 13:29, John Brier wrote:
>>
>> Also, the company is Arrow and it's called an Arrow antenna!
>> On Aug 5, 2015 1:57 PM, "Matt Patterson" <mattpatt@xxxxxxxx.xxx> wrote:
>>
>>> Not sure what they are built out of now but back in the day they were
>>> aluminum arrow shafts. I know because the one I have says Easton on
>>> every
>>> element. :)
>>>
>>> 73 Matt
>>> W5LL
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Wed, 5 Aug 2015 13:51:20 -0500
From: "KA9QJG" <ka9qjg@xxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID: <045c01d0cfaf$b7ec5690$27c503b0$@xxxxxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Horns and I have heard that they have other values but at 69 it may be to
late to try them LOL
73 De Don KA9QJG
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Clayton
W5PFG
Sent: Wednesday, August 05, 2015 1:41 PM
To: 'amsat bb'
Subject: Re: [amsat-bb] Screw threads on Arrow?
If Arrows are made from Arrows, what are Elks made from?
On 8/5/2015 13:29, John Brier wrote:
> Also, the company is Arrow and it's called an Arrow antenna!
> On Aug 5, 2015 1:57 PM, "Matt Patterson" <mattpatt@xxxxxxxx.xxx> wrote:
>
>> Not sure what they are built out of now but back in the day they were
>> aluminum arrow shafts. I know because the one I have says Easton on
>> every element. :)
>>
>> 73 Matt
>> W5LL
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
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Message: 9
Date: Wed, 5 Aug 2015 19:06:40 +0000 (UTC)
From: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID:
<1035089327.602034.1438801600896.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I ran into the owner at the Dayton HamVention 2 years agowhile he was
closing up his Booth. When I asked him aboutreplacement screws for my Arrow
elements that I had bent,he just tossed me a pack of about 6, no charge.
Nice guy!!
73/GL, ? ? Bob K8BL
From: KA9QJG <ka9qjg@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Wednesday, August 5, 2015 2:41 PM
Subject: Re: [amsat-bb] Screw threads on Arrow?
I have talked to the owner of Arrow a few times asking about His antennas He
was? always very Helpful Gave Me a Vet Discount,? ? I am sure with all the
Free Advertisement? We are giving Him here He will probably just give you
the screws? /parts? Info for Free give Him a call
http://www.arrowantennas.com/main/mail.html
73 De Don KA9QJG
PS? Old Hams Designs and Makes our own parts LOL
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Message: 10
Date: Wed, 5 Aug 2015 15:08:45 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Screw threads on Arrow?
Message-ID:
<CABzOSOow313X0xKYM00QCC+x++ONkJhVncA6tB-W_ig_C+Kxtw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Yep. And they are $1 direct from Arrow.
http://www.arrowantennas.com/parts/p146437-10.html
73,
Paul, N8HM
On Wed, Aug 5, 2015 at 3:06 PM, R.T.Liddy <k8bl@xxxxxxxxx.xxx> wrote:
> I ran into the owner at the Dayton HamVention 2 years agowhile he was
closing up his Booth. When I asked him aboutreplacement screws for my Arrow
elements that I had bent,he just tossed me a pack of about 6, no charge.
Nice guy!!
> 73/GL, Bob K8BL
> From: KA9QJG <ka9qjg@xxxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Wednesday, August 5, 2015 2:41 PM
> Subject: Re: [amsat-bb] Screw threads on Arrow?
>
>
>
>
> I have talked to the owner of Arrow a few times asking about His antennas He
> was always very Helpful Gave Me a Vet Discount, I am sure with all the
> Free Advertisement We are giving Him here He will probably just give you
> the screws /parts Info for Free give Him a call
>
> http://www.arrowantennas.com/main/mail.html
>
>
>
> 73 De Don KA9QJG
>
> PS Old Hams Designs and Makes our own parts LOL
>
>
>
>
>
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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Message: 11
Date: Wed, 5 Aug 2015 15:38:52 -0400
From: Howie DeFelice <howied231@xxxxxxx.xxx>
To: Thomas Doyle <tomdoyle1948@xxxxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Antennas
Message-ID: <BLU169-W20D224B329E41A09750A10E7750@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-7"
>From the w8ji.com:
Capture area, or
more correctly
effective aperture (Ae),
is a direct function
of antenna gain and
operating
wavelength. Ae is
determined by the
voltage available
across a load
matching the antenna
feed impedance for a
given electromagnetic
field strength
density. In simple
terms if the antenna
is placed in a
electromagnetic
field of a certain
intensity, a certain
amount of power will
appear in the load
at the antenna
terminals. The area
of space around the
antenna that
provided this amount
of power is the
effective aperture.
Many people
confuse physical
area, or Ap, with
effective aperture.
They are not the
same. Physical
size only determines
effective aperture
as physical size
might affect gain of
an antenna. Gain and
wavelength
determines capture
area, but capture
area itself has
nothing to do with
actual physical size or
physical area of the antenna.
For example a 1/2 wave long dipole in freespace has a capture area of about
.13??.
This means a
lossless freespace
dipole has an Ae of
approximately .13
square wavelengths.
This effective
aperture is about
100 times larger
than the actual
physical area of a
thin wire dipole
antenna. Energy is
extracted from an
elliptically shaped
area slightly longer
than the dipole and
about 1/4 wave
diameter at the
center. This is why
increasing conductor diameter
or using a cage of wires
will not increase
electrical aperture
or capture area.
As a matter of fact
if we built a
lossless or very low
loss small dipole,
perhaps ?/20 (1/20th
of a wavelength)
long, capture area
or Ae would be within a
few percent of a
full size dipole!
A change in
antenna element diameter does not
affect gain, except
as it might very
slightly reduce
power losses in
conductor
resistance. Length
itself has very
little effect unless
the change in length
significantly
affects antenna
gain. We must have a
change in gain to
change Ae (effective
electrical
aperture). Physical
aperture (Ap)
changes do not
affect Ae unless the
gain changes.
> Date: Wed, 5 Aug 2015 09:49:59 -0500
> From: tomdoyle1948@xxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Antennas
>
> Reading the posts on the 23 cm antennas brought back some nightmares and a
> lingering question I have about antennas. As an undergrad in Electrical
> Engineering we had to take a course in Maxwell's equations. I really
> suffered through that course. I remember one thing that I have wondered
> about since then. Almost everything was based on comparisons to an
> isotropic radiator (dBi). Since I was a ham I had little interest in things
> that could not be built. When measuring the real gain of a real antenna it
> has to be compared to something like a dipole. Sometimes a gain is
> converted to dBi by adjusting for the fact that the reference was a dipole.
>
> Consider measuring the gain of an antenna for 70cm with the reference a
> dipole for 70cm. Suppose the gain is 10 dB.
> Now consider making exactly the same measurements on a 23cm antenna with
> the reference a dipole for 23 cm and finding the same 10 dB gain.
>
> At first glance it would seem that the two antennas would be equally
> effective. Another view is energy. If you are trying to receive a signal
> there is only a certain amount of energy that is distributed through space.
> The goal of the antenna is to pick up as much of this energy as
> possible and deliver it to the radio. There is a term 'effective aperture'
> Ae or more commonly 'capture area'. The antenna picks up the energy in
> its Ae. Ae is not just the physical size of the antenna but bigger antennas
> tend to have a bigger Ae. Ae also depends on gain - the higher the gain the
> bigger the Ae (big surprise).
>
> Here is my question. All other things being equal (ignore things like path
> loss) I believe that the 70 cm antenna with 10dB gain will deliver more
> energy to the radio than the 23 cm antenna with 10 dB gain. Bigger is
> better ?
>
> If this is wrong please do not fill a chalk board with Maxwell equations to
> convince me. If it is correct, is the difference simply related in a linear
> fashion to the difference in wavelength or is there more to it ?
>
> 73 W9KE Tom Doyle
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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End of AMSAT-BB Digest, Vol 10, Issue 234
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