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Date Posted: 06:39:30 03/02/02 Sat
Author: ChuckY
Subject: Re: My observations
In reply to: Potter 's message, "My observations" on 06:00:59 03/02/02 Sat

I can get hold of a cro but I dont realy have any idea on where to start.

maybe if potter contacts me maybe we can hookup somwhere as we are in the same state.

as for a digital cro I maybe able to borrow one from work (Jaycar) for a night but it has to be back by morning as I can only borrow stuff overnight for Evaluation purposes.
other than that I can get hold of an old duel trace cro as that would be easier and would be able to keep that for longer.

if interested in working on these a bit more potter contact me via email. elecprod@hotmail.com

thanx mate hope your interested.





>That added diode is the 'bullet protector' mod that
>was applied to the 5507 - great work finding that one.
>The 5508 data looks to me like it's manchester coded
>(normal or differential?) with more bits than the
>line18 data for earlier units. It appears to have a
>bit period of 2.2uS and contains 24-25 bits including
>the start bit and I did not notice a large burst at
>the start - the reason I left the large burst detector
>out of my circuit. The reason my 'fuzzy' auto invert
>method works is possibly because the last bit is a
>parity bit or the LSB of a checksum and is mostly set
>if the invert bit is on and vice versa if not or maybe
>I just lucked out.
>Can anyone add more here? (I'm 'croless' at the moment
>so progress will delayed somewhat)
>It would be very helpful if someone with a fast
>digital cro could post a picture or two of the packet
>for us to play with.
>
>>I am also very interested in any info on 'chipping'
>>these boxes but nothing has surfaced so far.
>>
>>
>>>ok seing as the last one got so long I thought I
>would
>>>move it all back to a new thread as its starting to
>>>look ugly.
>>>
>>>I would like to know how every1 goes with these mods
>>>and if any1 has managed to get any furthur with them
>>>or have any other info on them.
>>>
>>>got can get the info I compiled from
>>>http://asap1.hypermart.net/5508w
>>>
>>>I will add more info as I get it so if any1 has
>>>anything I would like to add please let me know.
>>>
>>>I have heared there where fully hacked 5508w boxes
>>>sold so if this is true there must be some info
>around
>>>on how to do this other than the 3chip/potter mod.
>>>
>>>thank you and hope to hear peoples experiences with
>>>these decoders with any type of mod they may have
>come
>>>accross not just mine.

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