DCFlux, Writing the code is easy. Software is easy...that's why it is so popular. Tons of high school drop outs doing it every day, hi.
The format of the data was somewhat complex and as you said wierd tones like 530 Hz and 1250 and don't think was ASCII. Had to build tone decoder and speciallized serial port. Can't find the FCC EAS protocal, but think the end commands were same as start. Of the professional units I've seen they used lots of DSP. Obviously Radio Shack, Midland and others found a simpler way. I was working on decoder a few years back, but lost interest. Same with EDACS trunking. Had it decoded. Guess good gave both up. RS and others did both and cheaply, hi. 73, ron, n9ee/r >From: DCFluX <[EMAIL PROTECTED]> >Date: 2007/08/02 Thu AM 11:25:17 CDT >To: [email protected] >Subject: Re: [Repeater-Builder] WX Radio w/ S.A.M.E Revisited > >I was working on preparing an presentation for Defcon 15, but missed >the deadline. > >The protocol is an odd baud rate and odd tone frequencies, but it >should be possible to construct a decoder to look for the termination >sequence of 'NNNN' > >Please refere to FCC Rules 11.31 for more information. > >This would be a perfect task for the new TinyTrak4, but you will have >to motivate Byon to write the code. > >On 8/2/07, Ron Wright <[EMAIL PROTECTED]> wrote: >> Tom, >> >> I have 3 Radio Shack SAME receivers, 2 base type, and recently a HT type. I >> like the HT type for it displays time and temp...helps in some of my out >> door activites. >> >> Most of the SAME receivers I see, including the RS, the open audio is timed, >> RS to 5 minutes. Initially the FCC stated the message was to be limited to >> 2 minutes, but this might have changed. However, most messages are much >> shorter than 5 minutes. The NWS when it sends an alert also sends end of >> message command which could be used by the rcvrs. >> >> Have you seen any rcvrs other than the $1500 professional type that >> terminate the audio on the commands??? >> >> 73, ron, n9ee/r >> >> >> >> >From: tgundo2003 <[EMAIL PROTECTED]> >> >Date: 2007/08/02 Thu AM 08:34:49 CDT >> >To: [email protected] >> >Subject: [Repeater-Builder] WX Radio w/ S.A.M.E Revisited >> >> > >> >I was wandering thru Farm & Fleet (Actually there to buy food for the >> >chickens) and I noticed in the small electrics dept that First Alert >> >brand has NOAA WX radios with SAME- and they look to have the >> >individual LED's for the different statuses. I would gather these >> >would be modifiable for use with repeater controllers. There were two >> >models: >> > >> >WX-167 >> >http://www.simaproducts.com/products/product_detail.php?product_id=599 >> > >> >WX-150 >> >http://www.simaproducts.com/products/product_detail.php?product_id=598 >> > >> >Now- I believe the pricing was 39.99 for the 150 and 59.99 for the >> >167, but the website info does not correspond with that. I opened up >> >the 150 and read thru the manual (d*mn shoppers) and it does not >> >mention wether it runs on a 5 min timer when a message comes thru or >> >if it shuts back down when the message is over. I noticed on the 167 >> >there is already an external connector (F type) for an external >> >antenna as well as an alert out jack (1/8") for external signaling >> >devices, so if someone wanted an easy no frills accy for their >> >repeater you could probably adapt that with no modification. >> > >> >I know some people were looking for options last time we discussed >> >this so I figured I would pass this along. >> > >> >73's >> >Tom >> >W9SRV >> > >> > >> >> >> Ron Wright, N9EE >> 727-376-6575 >> MICRO COMPUTER CONCEPTS >> Owner 146.64 repeater Tampa Bay, FL >> No tone, all are welcome. >> >> >> >> >> >> >> >> Yahoo! Groups Links >> >> >> >> > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
