Re: [Repeater-Builder] Power monitor question
I wasn't thinking of using the 555 as a tone oscillator, but as a timer... You could use it like an activity timer with an AND gate connecting the COS and the power status sensor to time the beep, or just maybe extend the hang-time by some few hundred ms on a power-fail condition. However, that is an interesting observation you make. Steve - Original Message - From: Mike WA6ILQ [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, October 18, 2004 1:45 PM Subject: Re: [Repeater-Builder] Power monitor question At 09:54 PM 10/17/04, you wrote: Sounds like that kind of duty cycle would just help the battery run down more quickly. You might consider that type of automatic signal may not be appropriate for the service. Maybe you just need a beep after repeater activity? Maybe something with a 555 timer could be built up? Please don't use a 555 - they output square waves which sounds bad and if the TX audio filtering / deviation control isn't what it should be they will cause adjacent channel interference. A simple sine wave audio oscillator is not that difficult - a transistor, a audio transformer, and a few resistors and capacitors. In my initial response I didn't suggest keying the TX PL encoder simply because that may already be in use, and using it for a power fail alert requires hooking some kind of an alarm to a PL decoder somewhere. My offer to engineer a real solution still stands - just get me a RICK manual or a copy. Mike WA6ILQ 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/
[Repeater-Builder] Power monitor question
Hey guys, quick question for you. I'm sure someone has done this before. I had to make an emergency call to a mountaintop repeater site this evening for one of the local EMS squads because the link system stopped working. It turns out the power supply breaker popped due to a surge and they have been running on battery backup for the last 3 days and they finally died. What I'm looking for is some type of stand alone power monitor to let me know when the repeater is on battery backup. The controllers I use for my ham gear have this built in, as do most ham controllers, and will change the courtesy tone if it is on battery backup. However, this system is using a couple of Motorola mobiles and a RICK unit. What I am looking for is something I can interface into the 16 pin accy connector that will key one of the radios like once a minute and send a beep out so the listeners would be made aware the system has lost AC power for some reason. Anyone know of any devices like that? 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: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Power monitor question
Sounds like that kind of duty cycle would just help the battery run down more quickly. You might consider that type of automatic signal may not be appropriate for the service. Maybe you just need a beep after repeater activity? Maybe something with a 555 timer could be built up? Steve - Original Message - From: Kevin Bednar [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, October 17, 2004 9:22 PM Subject: [Repeater-Builder] Power monitor question Hey guys, quick question for you. I'm sure someone has done this before. I had to make an emergency call to a mountaintop repeater site this evening for one of the local EMS squads because the link system stopped working. It turns out the power supply breaker popped due to a surge and they have been running on battery backup for the last 3 days and they finally died. What I'm looking for is some type of stand alone power monitor to let me know when the repeater is on battery backup. The controllers I use for my ham gear have this built in, as do most ham controllers, and will change the courtesy tone if it is on battery backup. However, this system is using a couple of Motorola mobiles and a RICK unit. What I am looking for is something I can interface into the 16 pin accy connector that will key one of the radios like once a minute and send a beep out so the listeners would be made aware the system has lost AC power for some reason. Anyone know of any devices like that? TIA to all. Kevin K2KMB 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/
Re: [Repeater-Builder] Power monitor question
At 07:22 PM 10/17/04, you wrote: Hey guys, quick question for you. I'm sure someone has done this before. I had to make an emergency call to a mountaintop repeater site this evening for one of the local EMS squads because the link system stopped working. It turns out the power supply breaker popped due to a surge and they have been running on battery backup for the last 3 days and they finally died. What I'm looking for is some type of stand alone power monitor to let me know when the repeater is on battery backup. The controllers I use for my ham gear have this built in, as do most ham controllers, and will change the courtesy tone if it is on battery backup. However, this system is using a couple of Motorola mobiles and a RICK unit. What I am looking for is something I can interface into the 16 pin accy connector that will key one of the radios like once a minute and send a beep out so the listeners would be made aware the system has lost AC power for some reason. Anyone know of any devices like that? TIA to all. Kevin K2KMB Don't have a RICK manual handy. Do you know where I can find a PDF? Anyway, build up a beep device (or take an old tone-burst board) and wire it so that when a relay drops out the beep occurs during the carrier delay time. Then enable the beep with the contacts of a reed relay. Then connect the reed relay coil to a wall wart power pack plugged into the same AC line as the repeater. Get me a RICK manual and I will engineer the whole thing for you. Mike WA6ILQ 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] Power monitor question
The Motorola Micor Station with the battery charging / float option has a built-in 'beep' circuitry that beeps when the station is running on battery. When you hear that tell-tale 'beep' during every transmission, you know you are on battery. You could use a CTCSS tone instead - the only time the tone is transmitted is when the station is on battery. There, you have two suggestions, Hope this helps, Neil - WA6KLA Steve Grantham wrote: Sounds like that kind of duty cycle would just help the battery run down more quickly. You might consider that type of automatic signal may not be appropriate for the service. Maybe you just need a beep after repeater activity? Maybe something with a 555 timer could be built up? Steve - Original Message - From: Kevin Bednar [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, October 17, 2004 9:22 PM Subject: [Repeater-Builder] Power monitor question Hey guys, quick question for you. I'm sure someone has done this before. I had to make an emergency call to a mountaintop repeater site this evening for one of the local EMS squads because the link system stopped working. It turns out the power supply breaker popped due to a surge and they have been running on battery backup for the last 3 days and they finally died. What I'm looking for is some type of stand alone power monitor to let me know when the repeater is on battery backup. The controllers I use for my ham gear have this built in, as do most ham controllers, and will change the courtesy tone if it is on battery backup. However, this system is using a couple of Motorola mobiles and a RICK unit. What I am looking for is something I can interface into the 16 pin accy connector that will key one of the radios like once a minute and send a beep out so the listeners would be made aware the system has lost AC power for some reason. Anyone know of any devices like that? TIA to all. Kevin K2KMB Yahoo! Groups Links 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/
Re: [Repeater-Builder] Power monitor question
At 09:54 PM 10/17/04, you wrote: Sounds like that kind of duty cycle would just help the battery run down more quickly. You might consider that type of automatic signal may not be appropriate for the service. Maybe you just need a beep after repeater activity? Maybe something with a 555 timer could be built up? Please don't use a 555 - they output square waves which sounds bad and if the TX audio filtering / deviation control isn't what it should be they will cause adjacent channel interference. A simple sine wave audio oscillator is not that difficult - a transistor, a audio transformer, and a few resistors and capacitors. In my initial response I didn't suggest keying the TX PL encoder simply because that may already be in use, and using it for a power fail alert requires hooking some kind of an alarm to a PL decoder somewhere. My offer to engineer a real solution still stands - just get me a RICK manual or a copy. Mike WA6ILQ 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: [SPAM] - Re: [Repeater-Builder] Power monitor question - Email found in subject
Thanks Mike. I think I may already have a solution and will more than likely replace the RICK with a different controller that has a power fail monitor already on it. Kevin -Original Message- From: Mike WA6ILQ [mailto:[EMAIL PROTECTED] Sent: Monday, October 18, 2004 2:46 PM To: Repeater-Builder@yahoogroups.com Subject: [SPAM] - Re: [Repeater-Builder] Power monitor question - Email found in subject At 09:54 PM 10/17/04, you wrote: Sounds like that kind of duty cycle would just help the battery run down more quickly. You might consider that type of automatic signal may not be appropriate for the service. Maybe you just need a beep after repeater activity? Maybe something with a 555 timer could be built up? Please don't use a 555 - they output square waves which sounds bad and if the TX audio filtering / deviation control isn't what it should be they will cause adjacent channel interference. A simple sine wave audio oscillator is not that difficult - a transistor, a audio transformer, and a few resistors and capacitors. In my initial response I didn't suggest keying the TX PL encoder simply because that may already be in use, and using it for a power fail alert requires hooking some kind of an alarm to a PL decoder somewhere. My offer to engineer a real solution still stands - just get me a RICK manual or a copy. Mike WA6ILQ 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/
Re: [Repeater-Builder] Power monitor question
Using 1 transisitor and a few resistors and capacitors will do as well. Neil - WA6KLA Mike WA6ILQ wrote: At 09:54 PM 10/17/04, you wrote: Sounds like that kind of duty cycle would just help the battery run down more quickly. You might consider that type of automatic signal may not be appropriate for the service. Maybe you just need a beep after repeater activity? Maybe something with a 555 timer could be built up? Please don't use a 555 - they output square waves which sounds bad and if the TX audio filtering / deviation control isn't what it should be they will cause adjacent channel interference. A simple sine wave audio oscillator is not that difficult - a transistor, a audio transformer, and a few resistors and capacitors. In my initial response I didn't suggest keying the TX PL encoder simply because that may already be in use, and using it for a power fail alert requires hooking some kind of an alarm to a PL decoder somewhere. My offer to engineer a real solution still stands - just get me a RICK manual or a copy. Mike WA6ILQ 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/
Re: [Repeater-Builder] Power monitor question
I forgot to mention the circuit I suggested below is known as a phase shift oscillator. Neil Neil McKie wrote: Using 1 transisitor and a few resistors and capacitors will do as well. Neil - WA6KLA Mike WA6ILQ wrote: At 09:54 PM 10/17/04, you wrote: Sounds like that kind of duty cycle would just help the battery run down more quickly. You might consider that type of automatic signal may not be appropriate for the service. Maybe you just need a beep after repeater activity? Maybe something with a 555 timer could be built up? Please don't use a 555 - they output square waves which sounds bad and if the TX audio filtering / deviation control isn't what it should be they will cause adjacent channel interference. A simple sine wave audio oscillator is not that difficult - a transistor, a audio transformer, and a few resistors and capacitors. In my initial response I didn't suggest keying the TX PL encoder simply because that may already be in use, and using it for a power fail alert requires hooking some kind of an alarm to a PL decoder somewhere. My offer to engineer a real solution still stands - just get me a RICK manual or a copy. Mike WA6ILQ Yahoo! Groups Links 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/
