Probably some security thing to if someone hacked it probably design to break up as a useless device
CATV Systems used to come up with security anti-hacking measures to prevent theft of services. M. H. ----- Original Message ----- From: "aa5sg" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, January 01, 2005 8:41 PM Subject: [Repeater-Builder] Re: Strange board in MASTRII mobile > > > The way the chip is mounted to the pcb, it looks like the leads > would possibly break if it was pryed up or flexed too much. The > black residue did look familiar. Good luck with the board > identification. > > --- In [email protected], Joe <[EMAIL PROTECTED]> wrote: >> No part number on the HTF chip, just some black residue on the top > from >> what was used to stick it inside the case. The HTF is double- > sided tape >> stuck to the PC board, I'm afraid I'd wreck the HTF chip prying it > up. If >> I can't figure it out, I'll pry it up. >> >> The leads were already disconnected, but I remember them being > near J908, >> 99% certain about that because the way the leads were dressed. >> >> At 08:07 PM 1/1/2005, you wrote: >> >> >> >This sort of looks like an aftermarket board, but with the blue > HTF >> >chip onboard, it could be OEM, or just manufactured using at least >> >some OEM parts. Does the blue HTF chip have a part number on > it? I >> >guess the big clue would have been the list of the pin connections >> >(pin names) the colored leads were plugged onto. Just by looking, >> >with no shielded wires flying, I wouldn't think this was a tone >> >encoder. Probably not CTCSS anyway... First guess would be that > it >> >is some sort of after market or special production scan board. >> >Second guess would be that it's a tone burst board of some type... >> >But those are just my guesses. >> > >> >Steve > > > > > > > > > Yahoo! Groups Links > > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
