[arm-allstar] Dtmf follow up

Doug Crompton wa3dsp at gmail.com
Sun Jan 28 09:44:36 EST 2018


 Glad you got it going. This is surprising if you were using a new Sandisk
Ultra card. I have never seen this happen but there is always a first time.
In fact I have never personally seen a bad Sandisk card other than one I
accidentally physically destroyed myself.

*73 Doug*


*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*

On Sun, Jan 28, 2018 at 7:40 AM, "Kerry McKenzie via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> Well it all became clear today when a friend turned up with a pi 3 this
> morning.
> I had burned an image on the same card for a second time and was still
> struggling, and if not worse.
>  Wanting to keep this image decided I would burn a fresh image for the pi
> 3.
> Taking a fresh card 16 gig class 10 Sandisk I put it in the pc and
> proceeded to burn a new image.
> I was very surprised to see the burn speed at least 3 times the speed of
> the old card which was the same type 16 gig class 10.
> The penny dropped... bet you have a crook card my friend said, and sure
> enough he was spot on as the new card configured up and worked perfectly
> with dtmf tones decoding without a mistake. Even keying as fast and short
> as I could it was decoding perfectly.
> I can only assume the card must have been deteriorating and after writing
> the second image to the same card it never dawned on me the speed of the
> write to the card until I used a new card out of the packet.
> So my lesson is learned that in future if things go wrong I will burn my
> backup image to a new card first and test it as I have spent days trying to
> figure out why my dtmf tones had been failing to work then the tx audio
> itself beginning to deteriorate as well with the second image burn on the
> old card.
> So tuck this away in the back of your mind should things begin to go wrong
> with your node before you go tweaking like I have spent days doing check
> your card by replacing with a backup and see if your issues go away before
> doing any tweaking.
> Thanks to all those who replied
> Regards Kerry VK4TUB
> --
> regards
> Kerry McKenzie
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> arm-allstar at hamvoip.org
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