[OZAPRS] OT: what to use for Antenna Tip?

Robert Thirkettle rob.thirkettle at canterbury.ac.nz
Wed Jul 28 13:05:26 EST 2010


Hi How long are the tips you require? I phoned our Stainless steel supplier had he has tons of 304 Ø1/8 " or Ø3.175mm  X ~300mm stainless steel off cuts he said I can have them if you don't need them too long I could put some in the post to you.

 

Regards Rob Thirkettle  ZL3RX         

Dept  Physics & Astronomy

University of Canterbury     

Private Bag 4800,         

Christchurch 8020,

New Zealand

Tel: +64 3 364 2510

Fax: +64 3 364 2469

mailto:rob.thirkettle at canterbury.ac.nz

 

 

From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of Damien Gardner Jnr
Sent: Wednesday, 28 July 2010 11:57 a.m.
To: Australian APRS Users
Subject: Re: [OZAPRS] OT: what to use for Antenna Tip?

 

Hey Andrew,

 

I have the length no worries (currently using a welding rod ;) ) - was more that i was assuming it was some special kind of steel, as it doesn't seem to rust.. - but it's definitely not stainless or gal..?

 

Hrrm, hadn't thought of fencing wire, that might be thick enough :)

 

Cheers,

 

DG

 

Damien Gardner Jnr
VK2TDG. Dip EE. GradIEAust
rendrag at rendrag.net -  http://www.rendrag.net/
--
We rode on the winds of the rising storm,
 We ran to the sounds of thunder.
We danced among the lightning bolts,
 and tore the world asunder

 

On 28/07/2010, at 9:46 AM, Andrew Gilbett wrote:





Hi Damien,

I have a 10m mobile one whip, I can get the specs for the tip if u
want (just have to go and measure it), but its going to be different
length... but likely the same diameter.
What I did to replace the tip was get some fencing wire and cut to the
approximate length (on the long side) and just trim it to tune it the
the frequency that you want. If the tip is not to long then it is
fairly easy to straighten it out.

Thanks :-)
Andrew Gilbett
andrew.gilbett at gmail.com



On 28 July 2010 09:39, Damien Gardner Jnr <rendrag at rendrag.net> wrote:



Hi Folks,

	I have a mobileone 30m whip on the car for HF APRS - it's a bloody great

	little (well, not so little :-p) antenna, but I'm having hell getting a

	replacement tip for it..  M1 have been nice enough to send me a couple of

	replacements, but one was too short, and the other, the envelope arrived

	without the tip! (actually the envelope arrived without the tip inside on

	the first one too, but the envelope and tip were in an Auspost envelope..

	this latest one, there was just no tip in either envelope!)  Seems Auspost

	don't have any testing of envelopes before they go into the sorting

	machines, to see if they'll actually BEND..which is a bit bizarre.. - I've

	shipped THOUSANDS of LED's simply in an envelope with a sheet of thin card

	either side, and never had a complaint from customers..

	So anyway.. - I really don't want to hassle M1 any more.. - they don't seem

	to want to tell me what the tip is (i.e. what type of steel, what diameter),

	so wondering if anyone else has had to replace the tip on their M1 whip

	themselves, and happens to know what I'm asking metaland to order in for me?

	Cheers,

	Damien

	Damien Gardner Jnr

	VK2TDG. Dip EE. GradIEAust

	rendrag at rendrag.net -  http://www.rendrag.net/

	--

	We rode on the winds of the rising storm,

	 We ran to the sounds of thunder.

	We danced among the lightning bolts,

	 and tore the world asunder

	 

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