[OZAPRS] Ozaprs Digest, Vol 11, Issue 28

Dr Andrew Maxwell maxwella at mac.com
Sat Jul 22 14:35:14 EST 2006

Dr. Andrew Maxwell
Faculty of Engineering and Surveying 
University of Southern Queensland 
Toowoomba, Queensland 4350, Australia. 
eMail: maxwella at mac.com
Mobile: 0419 778 316
[[[   Sent Via Blackberry   ]]]

-----Original Message-----
From: ozaprs-request at aprs.net.au
Date: Sat, 22 Jul 2006 12:00:05 
To:ozaprs at aprs.net.au
Subject: Ozaprs Digest, Vol 11, Issue 28

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Today's Topics:

   1. Re: Balloon (Richard Murnane)
   2. Re: OT.  Wierd hardware problem (Rodney Mitchell)


Message: 1
Date: Fri, 21 Jul 2006 20:06:58 +1000
From: Richard Murnane <vk2sky at unwired.com.au>
Subject: Re: [OZAPRS] Balloon
To: VK / ZL APRS Users <ozaprs at aprs.net.au>
Message-ID: <32718F18-7FD2-4ED3-9BF7-425EECDD1BB1 at unwired.com.au>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

Hi Craig,

You wrote:

> The radio is currently set at its low power setting (which is below 2
> watts) and the beacon interval

Perhaps a bit late for hardware mods, but the TinyTrak can drive a  
relay that will switch your radio on just before beaconing then  
switch it off, which might give you some leeway to use a higher  
transmit power.

In another message you wrote:

> My concern with a longer beacon time is that if it beacons, say 5
> minutes before final impact, it could still be moving at around 20-30
> kph before impact, that means it could travel 2-3k before final  
> impact.
> If the transmitter ceases transmission on impact that could be a  
> fairly
> large search area!

Have you checked out the Smart Beaconing settings? You can make the  
beacon rate dependent on the speed of the balloon. As for ceasing  
transmission on impact, presumably it won't change direction; and I  
doubt that anyone would mind if you beaconed more often, eg 1 - 2  

Anyway, good luck with the flight!

73 Richard VK2SKY

Richard Murnane   vk2sky at unwired.com.au


Message: 2
Date: Thu, 20 Jul 2006 14:22:11 +0930
From: "Rodney Mitchell" <rodney at melecom.com.au>
Subject: Re: [OZAPRS] OT.  Wierd hardware problem
To: <vk2xci at aanet.com.au>,	"'VK / ZL APRS Users'"
<ozaprs at aprs.net.au>
Message-ID: <000001c6abb8$43174b10$4600a8c0 at rocket>
Content-Type: text/plain;	charset="us-ascii"

Hi Norm,

More than likely the Hard Drive is crook,  better "ghost" it quick!!!!

73 de Rod, VK5KFB.

-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
Behalf Of Norm, VK2XCI
Sent: Wednesday, July 19, 2006 6:36 PM
Subject: [OZAPRS] OT. Wierd hardware problem

Athlon X2600+
ECS KT600-A mobo

I have seen many CPUs which fail when they get hot.This is the first 
time I've ever seen one which won't run when its cold!!! Not real cold, 
Winter's morning room temperature... like 12 or so deg c

With each attempt at booting, it gets a little further until it finally 
makes it to operation. After a short run, it reboots every time. If it's

been off for an hour or so, no go!

I had to heat the damned thing with a hot air gun to get it to boot!

I was able to direct a stream of warm air directly onto the heatsink 
without heating too much of the mobo, and lo and behold it burst into

Has anyone else seen this?

Any other clues? I don't want to have to replace the mobo and CPU and I 
cant find a replacement CPU.

Norm, VK2XCI,
Mildura, The Wintersun City

Victoria, Australia.

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