Re: [Repeater-Builder] Backup Repeater System
Use a circuit looking at the output of the primary - you will need a radio to do this, it having sensed the primary on-line will inhibit the ptt engagement of the secondary even though both rx are working fine. nfd440 wrote: > > We have a MTR 2000 Primary Repeater at one location. and we are > looking to put in a second backup repeater at another location. How > can we connect the two repeaters so if the primary one fails the > back-up one will automaticly go on. > > John > -- 73...Clark Beckman N8PZD Pursuant to U.S. Code, title 47, Chapter 5, Subchapter II, ß227, "Any and all nonsolicited commercial E-mail sent to this address is subject to a download and archival fee of $500.00 U.S.". E-mailing denotes acceptance of these terms. 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/
Re: [Repeater-Builder] Backup Repeater System
Hello John: Here are a couple of ideas. (A) Real simple would be to have a different PL or DPL on the second repeater in case the main fails. Then just switch to a different PL on all the Radios. (B) Since there are numerous things that could keep a repeater from functioning, a good idea would be to let the second repeater have a two-second delay on initial key up, then if the 2nd Repeater's transmitter sees a busy signal, you could have it programmed to not transmit on a busy signal on the output. (With this second option, your standby repeater would have to have the transmitter section composed of such as a mobile radio with it's receiver still able to receive. Just program the Transmit Radio in simplex. Make sure it's receive has the same PL or DPL of the main Repeater's output tone.) Mike 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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] Backup Repeater System
That would be a sort of tough one to do But i have done this with a set of repeater of my own. what I did was allow the MAIN repeater ( if power failed) is have battery back up on the controller and uhf link radio so when the power failed a rely would kick out on the 120v side and when not energized close the contact to recall a macro or DTMF string to be sent out the link radio to turn on the AUX repeater listening to the link from the MAIN that would respond to the command from the main and turn the repetaer on. and when the power was restored it send a different string or macro commands to turn the AUX repeater OFF.. this only worked out good due to the face that the power to both places were on a difference service.. the main is in the county and the AUX repeater is in the city. but on the AUX controller u will have to be able to accept DTMF commands from the link radio hope that this would help some ... You could also use a good switching circuit a couple of transistor and resistor on the power line to take a analog input on the main controller hi or low depending on your controller to take place of the relay Good luck Brent http://www.qsl.net/kf4tnp - Original Message - From: "nfd440" <[EMAIL PROTECTED]> To: Sent: Thursday, January 15, 2004 11:13 AM Subject: [Repeater-Builder] Backup Repeater System > We have a MTR 2000 Primary Repeater at one location. and we are > looking to put in a second backup repeater at another location. How > can we connect the two repeaters so if the primary one fails the > back-up one will automaticly go on. > > John > > > > > > > > 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/ > > > --- > [This E-mail scanned for viruses at TNWEB LLC] > > --- [This E-mail scanned for viruses at TNWEB LLC] 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/
