I see a lot of people talking about having to tap off at the LED. I have 2 R/S WX receivers here one is SAME and one is not and both have outputs, I have not messed with the output but I believe that it is a NO contact that closes upon alert and opens when the receiver goes back to mute. The only thing I don't like about it is that most of these radios will mute 4-5 minutes after the alert message, that is a bit long for my taste but you could use the output to fire another relay/timer that is set for lets say 2-3 minutes and that could command the repeater controller.
Rich -----Original Message----- From: Al Wolfe [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 08, 2004 11:56 AM To: [email protected] Subject: [Repeater-Builder] Re: Weather Radios Why reinvent the wheel? SAME receivers have been out for several years. I bought a new Midland for $25 at a hamfest about three years ago. It can be programmed for several SAME code counties, different alerts, etc. It works well at a broadcast station with 50,000 watts ERP on an FM as well as co-located ham repeaters on two and 440. Several megawatt (or so it seems!) pagers system are about a mile away. The voltage states on the LED indicators can be used for determining alerts, tests, etc. Should be useful to control an input to a repeater. FWIW, the EAS decoder/encoders used in broadcast facilities usually start at over a grand, more like $3000, for a decent one. Have no experience with the Rat Shack models, but it would seem that trying to build your own SAME decoder is a lot of work when other options exists, other than an academic exercise. And I can't think of a legitimate reason to retransmit SAME codes on amateur frequencies. I guess if you really need a bullet proof front end you could take the IF signal out of commercial receiver and insert it into a cheap SAME receiver's IF chain. Or you could take the discriminator audio from the commercial receiver into the cheap SAME receiver's detector. The stock whip antenna on the back of the little midland works just fine here, but then, the WX station is only six miles away. I think I'd try a yagi cut to 162 if the signal was weak. Al, K9SI 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/
