Consider the ComSpec ID-8 for true sine wave output. Bit more pricy though that this little gadget.
Milt N3LTQ ----- Original Message ----- From: "Gran Clark" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, September 19, 2007 5:57 PM Subject: [Repeater-Builder] Slick Identifier > Hi All > > On Mike Morris's suggestion here is an experience using the > ID-O-Matic identifier from Hamgadgets. > > This is a $20.00 + ($2.67 shipping) kit that can be assembled in > about 30 minutes including reading the instructions. I would say > anyone who has interfaced a repeater would not have any trouble using > this CW identifier. It is using a PIC16F648A PIC (Programmable > Integrated Circuit). It is preprogrammed to interface via the 9 pin > COMM port on your computer using the Hypr Terminal or in my case Procomm. > > My application was to identify a UHF GE MPV link transmitter. The > identifier START "COS" is low true so you may have to invert a high > true COS line from you repeater. The audio output is a square wave, > as they state, so it would be wise to use a fairly low tone like 400 > Hz and roll off the high frequencies of the sharp wavefront square > wave (10k and a 0.1 uF followed by what ever resistance it takes to > the microphone input) did it for me. PTT is a Vmos 60V FET which is > negative true and will "or" with most PTT logic. Be very careful to > use the scope on your IFR or at least multiply any deviation meter > reading by two. This is a differentiated wave form. I used 1 kHz > deviation just in case it did identify over someone speaking. > > Sort of to the side, I used the repeater COS to enable the CTCSS on > the MVP. This will prevent the ID from being repeated for the others > on the linked system. > > I suppose like most products your own application has peculiar > needs. I wish the identifier had a sine wave output. The ID sounds > more like a buzzer than the nice tones of an ACC 850 but since users > of our system don't hear the ID it makes little difference. The > other comment would be to supply pins to put in the PC board holes so > you could mate connectors or have posts to solder to from the component > side. > > Dale N0XAS is the only one marketing this product that I could see > and he is great to work with if needed. > > All in all I think this is a neat ID solution. Sure beats diode > matrix ID boards! > > http://www.hamgadgets.com/product_info.php?products_id=64 > > Gran K6RIF > > Gran K6RIF > > > > > > > Yahoo! Groups Links > > >
