Last time I needed one of these, I took a regular 12vdc plug slug/wall wart type of power supply and fed a relay keeping it energized all the time. Then I �copied� the beep tone circuitry from a Motorola R100 repeater (it�s a pretty straightforward tone generator) and used that to put the beep tone on the repeater, having the relay and tone generator powered from the backup battery. You would think someone would make a similar product in one box, but since you can buy a full featured repeater controller for $300 or less it probably just isn�t worth it.
73 N7HQR Daron J. Wilson, RCDD��������� ) ) Telecom Manager�������������� ( ( LH Morris Electric, Inc.������ ) ) (541) 265-8067 office������ _|****|� mmm! (541) 265-7652 fax�������� ( |��� |� coffee! (541) 270-5886 cellular���� \|��� | [EMAIL PROTECTED] |____| -----Original Message----- From: Kevin Bednar [mailto:[EMAIL PROTECTED] Sent: Friday, December 03, 2004 8:37 AM To: [email protected] Subject: [Repeater-Builder] Need AC mains monitor Looking for a inexpensive, stand alone device that can monitor the output of a power supply for loss of AC mains power and then inject a beep tone onto the TX audio when its keyed up. This needs to be able to be interfaced to a RICK unit, which is being used to control the radios. Anyone use any products like this, or have any ideas on what to use? It has to be able to interface to the RICK and existing radios, and I've already looked at the Zetron voice telemetry units, but spending $700+ is not an option for the end user. TIA to all. Kevin K2KMB 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. 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/
