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Re: Antenna Launcher OT Metrics

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Fred Townsend

Re: Antenna Launcher OT Metrics

Question: One presumes that you would use tennis balls and not potatoes.
Tennis balls are 2 1/2 to 2 5/8 inches and that is supposed to fit US sized
PVC pipe. If one builds a launcher in the UK using metric PVC, do you then
need to use metric tennis balls?

73, Fred, AE6QL

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of David Ferrington,
M0XDF
Sent: Wednesday, October 12, 2011 3:36 AM
To: [hidden email]
Subject: Re: [Elecraft] Antenna Launcher

Thanks to all the replies, I was looking for the kit, but at £33.63, thats
good value. I'll check they will ship to UK for that price!

73 de M0XDF, K3 #174, P3 #108, KX3 #???
--
Men build too many walls and not enough bridges.
-Isaac Newton, philosopher and mathematician (1642-1727)

On 12 Oct 2011, at 02:48, Kent Berglund PhD wrote:

> Hi David,
>
> Here is the link to their store.
>
> http://joplin-arc.org/store1/index.php?main_page=shopping_cart
>
> It looks like it would cost 33.63 BP.
>
> 73, Kent KC9LIF
>
>
> > From: [hidden email]
> > Date: Wed, 12 Oct 2011 01:52:28 +0100
> > To: [hidden email]
> > CC: [hidden email]; [hidden email]
> > Subject: Re: [Elecraft] Antenna Launcher
> >
> > Do you know if they will ship to the UK and any idea how much for?
> > 73 de M0XDF, K3 #174, P3 #108, KX3 #???
> >
> >
> > On 11 Oct 2011, at 16:29, [hidden email] wrote:
> >
> > > Hi Don --
> > > If you want to build an antenna launcher like the antenna
> > > bazooka or spud gun, check the Joplin ARC website at:
> > > <http://www.joplin-arc.org/pages/antennalauncher.html>
> > >
> > > They sell a kit for $35 or $40 to build one using heavy
> > > PVC tubing pieces. Looks to be pretty neat and not too
> > > costly. Also using air pressure instead some exploding
> > > propellent makes it safer.
> > >
> > > They've even got a video showing the unit in operation. I
> > > saw these at the Joplin Hamfest in August.
> > >
> > > 73,
> > > Jim - K5LAD
> > >
> > >
> > > Date: Sun, 9 Oct 2011 08:31:36 -0400 (EDT)
> > > From: [hidden email]
> > > Subject: Re: [Elecraft] K3 in the California QSO Party
> > > To: "Rem O." <[hidden email]>
> > > Cc: ELECRAFT <[hidden email]>
> > > Message-ID:
> > > <[hidden email]>
> > > Content-Type: text/plain; charset=UTF-8; format=flowed;
> > > delsp=no
> > >
> > > What was the tennis ball launcher used. I think you gents
> > > called it an antenna bazooka or similar. I need to make
> > > one of those for putting up my loop.
> > >
> > > Where can I find directions.
> > >
> > > Thanks in advance
> > >
> > > ~73
> > > Don
> > > KD8NNU

Re: Antenna Launcher OT Metrics

You would need to use a 63.5 to 66.8 mm tennis ball in Europe.

Willis 'Cookie' Cooke
K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart

________________________________
From: Fred Townsend <[hidden email]>
To: "'David Ferrington, M0XDF'" <[hidden email]>; [hidden email]
Sent: Wednesday, October 12, 2011 3:14 PM
Subject: Re: [Elecraft] Antenna Launcher OT Metrics

Question: One presumes that you would use tennis balls and not potatoes.
Tennis balls are 2 1/2 to 2 5/8 inches and that is supposed to fit US sized
PVC pipe. If one builds a launcher in the UK using metric PVC, do you then
need to use metric tennis balls?

73, Fred, AE6QL

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of David Ferrington,
M0XDF
Sent: Wednesday, October 12, 2011 3:36 AM
To: [hidden email]
Subject: Re: [Elecraft] Antenna Launcher

Thanks to all the replies, I was looking for the kit, but at £33.63, that’s
good value. I'll check they will ship to UK for that price!

73 de M0XDF, K3 #174, P3 #108, KX3 #???
--
Men build too many walls and not enough bridges.
-Isaac Newton, philosopher and mathematician (1642-1727)

On 12 Oct 2011, at 02:48, Kent Berglund PhD wrote:

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Benny Aumala-2

Re: Antenna Launcher OT Metrics

In reply to this post by Fred Townsend

PVC-pipes in Europe are 50 / 63 / 75 / 90 mm.
63mm just fits in "European tennis-ball", not too tight.
At least in my CSV19 launcher.
But ball weight must be doubled by inserting
pieces of nails or small coins.

smile

Benny OH9NB

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