[Repeater-Builder] Re: Motorola Power Supply Questiona
Mike, Your comments and help is very much appreciated. You have gone to an effort to help me greatly and I extend my thanks to you. Great details! The TPN number is TPN2264 SP01 It has been mentioned to me that the SP could mean either special product or special price. I haven't actually powered it up yet but will do so shortly and check output voltages. My reason for asking about this supply is that well ... I have it and could sure use it if it proves to be suitable for my application - powering dc devices and a couple of UHF repeaters in my mobile home when plugged into grid power (the charging circuits would be a bonus for keeping the batteries topped up - but as has been mentioned already it would probably not be good for my AGMs.) I got it for next to nothing so saw it as a cost effective solution. My other option is a switch-mode bench supply @ 40amps continuous that I also have. A bit concerned about RFI into radio equipment tho. It is one of the POWERTECH MP3090 models such as this - http://tinyurl.com/y9nl85a The model I have has digital volts and amps meters - so a good way of keeping a tab on current draws. What do list members think of using this supply as an alternative to the Motorola one? I know which is a lot lighter to pick up and move around! Thanks all Graham ZL3TV New Zealand --- In Repeater-Builder@yahoogroups.com, Mike Morris wa6i...@... wrote: The photo looks like a repeater supply. Many repeater supplies provided a 9.6v DC low current output for the receiver and exciter, some had a second low current output at 13.5-13.8vDC at 3-4 amps for the other audio stages, and most had an unregulated (as high as 16v) high current output for the transmitter RF amplifier section. The 16vDC is not suitable for high current loads that expect 12-14 volts. You will cook / boil your batteries. The 25-series number is for the power transformer only. Motorola parts department always formatted their part numbers with a 2-digit prefix to identify the type of part. See http://www.repeater-builder.com/motorola/numerical-parts-categories.html TB602 is a label for a connector that goes to somewhere else in the radio cabinet. It probably has the 9.6 or 12v low current, or ? Some supplies had a battery charger circuit in them. Some had a battery backup section (i.e. an automatic load switchover from the mains supply to the battery bank. Please look for a rubber stamped number somewhere on the chassis that starts with TPN, followed by 4 digits and maybe a suffix with some letters and numbers after it - something like TPN1095A, or TPN1152B1, or something in that format. USUALLY, but not always, there is a letter after the 4 digits, occasionally there is a number after the letter, and rarely there is a number at the end. There is no way to tell exactly what voltages, or features your supply has in it without seeing the actual physical supply, or looking at the manual. If you provide the complete TPN number we can look it up to see what type of station (radio) it came from, then look at the manual for that station. BTW the TPN comes from: T = Two way radio product P = Power supply, or power supply related N = Not frequency sensitive . The last letter usually was structured like this: A Under 25 MHz B 25-54 MHz C 66-88MHz D 144-174 MHz E 390-550 MHz F 890-960 MHz N Not frequency dependent See http://www.repeater-builder.com/motorola/aaa-numbering-scheme.html Mike Morris WA6ILQ
[Repeater-Builder] Re: Motorola Power Supply Questiona
Hey Gareth, Nice to hear from you. Thanks for the info on the power supply and I will heed your warnings about battery types. I am possibly able to get a circuit diagram for this from another group member and this will be very helpful in my possible future use of this supply. My primary want for this is for its DC supply at 25 odd amps for powering 12v devices in the mobile home, so if it pans out it is not that suitable for charging my Gels ... I can live with that. Might be the push I need to get some solar panels bought and installed :-) Thanks again. Graham. --- In Repeater-Builder@yahoogroups.com, Gareth Bennett gare...@... wrote: Hi Graham, We recently threw out dozens of similar items from Transpower sites that were in service as constant voltage float chargers in substations. What you may have is a constant voltage charger with supervision circuitry by the looks of it, and a way to set voltage and overcurrent foldback. These chargers are great for conventional lead acid batteries, but generally do not have temperature compensation for sealed construction cells such as SLA / AGM etc. Most importantly is to go by the battery manufacturers specificationsMore often than not, the charger is the cheapest item in the installation. Regards, Gareth - Original Message - From: zl3tda To: Repeater-Builder@yahoogroups.com Sent: Monday, February 22, 2010 11:20 PM Subject: [Repeater-Builder] Motorola Power Supply Questiona Hello all from down under! I have a Motorola power supply that has come out of a repeater installation and I am looking for some info on it. What I am mostly wanting to know is what a small row of header type pins are for - external meters etc perhaps? The numbers on the transformer are - 25D84880N02 / TB602 / Scumacher Elect 93-013-418. I did a google and got a few hits ... all NON English :-) I want to use this to provide the DC power needs in my mobile home while I am connected to grid power (got a few hungry devices - Ham radios,audio and Rf amps and LCD TV's). I see there is a charging circuit as well and would hope this would be suitable to keep my deep cycle batteries topped up - no solar panels installed at this time. I am wondering if the charging circuit is able to look after my batteries and has 1-2-3 stage charging - bulk, absorption and float ... or would it just be float? Having prematurely lost a couple of very big deep cycle batteries due to perhaps over zealous charging from the built-in charger on the old Trace inverter I have been using, I am keen to look after my new set as best I can. Is the charger in this type of supply up to the task or would I be best to use a smaller good quality three stage charger separate. Oh ... and to keep it on topic - I have a couple of Tait T800 repeaters in a rack in the bus for events and festival comms. Here is a link to what it looks like http://tinyurl.com/yg9p9oy Any help much appreciated. Thanks! Graham Shaw ZL3TV Mid Canterbury New Zealand
[Repeater-Builder] Motorola Power Supply Questiona
Hello all from down under! I have a Motorola power supply that has come out of a repeater installation and I am looking for some info on it. What I am mostly wanting to know is what a small row of header type pins are for - external meters etc perhaps? The numbers on the transformer are - 25D84880N02 / TB602 / Scumacher Elect 93-013-418. I did a google and got a few hits ... all NON English :-) I want to use this to provide the DC power needs in my mobile home while I am connected to grid power (got a few hungry devices - Ham radios,audio and Rf amps and LCD TV's). I see there is a charging circuit as well and would hope this would be suitable to keep my deep cycle batteries topped up - no solar panels installed at this time. I am wondering if the charging circuit is able to look after my batteries and has 1-2-3 stage charging - bulk, absorption and float ... or would it just be float? Having prematurely lost a couple of very big deep cycle batteries due to perhaps over zealous charging from the built-in charger on the old Trace inverter I have been using, I am keen to look after my new set as best I can. Is the charger in this type of supply up to the task or would I be best to use a smaller good quality three stage charger separate. Oh ... and to keep it on topic - I have a couple of Tait T800 repeaters in a rack in the bus for events and festival comms. Here is a link to what it looks like http://tinyurl.com/yg9p9oy Any help much appreciated. Thanks! Graham Shaw ZL3TV Mid Canterbury New Zealand
[Repeater-Builder] Re: OT Help Request.
Hi Givan, I saw your name pop up here on the repeater list and thought I'd try and contact you this way. I have been emailing you, unsuccessfully, to obtain the programming software and information for the GP68 plus radios that you offered me some time back. Perhaps my emails did not get through? Can you still help me here? Hoping, Graham Shaw ZL3TV Christchurch New Zealand. --- In Repeater-Builder@yahoogroups.com, Givan George [EMAIL PROTECTED] wrote: Hi to all, Does anyone on this list have experience in setting up 911 dispatch centers or have supplied and or installed equipment for a dispatch center? Would like to contact me of list at: [EMAIL PROTECTED] Regards Givan -- ___ Search for businesses by name, location, or phone number. -Lycos Yellow Pages http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default.asp?SRC=lycos10 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] Re: Power supply identification request.
Thanks for that prompt Bob. Found the number and it is TPN1226A with SP01 stamped next to this number. Fingers crossed I can find a circuit and notes for connections. :-)) 73 Graham ZL3TV. --- In Repeater-Builder@yahoogroups.com, Bob M. [EMAIL PROTECTED] wrote: Look all over the chassis for another model number, probably on a yellow or orange sticker, something that starts with TPN. This almost sounds like a power supply for an MSF5000, but I'm sure there are other similar station supplies. Same number and size of fuses, and the equalize switch would indicate it is the battery-charging version. But I hesitate to say that's what it is for sure because I couldn't find any reference to that 25D number. Bob M. == --- zl3tda [EMAIL PROTECTED] wrote: Hi to all on the list. I have lurked for a while and always get a great deal from reading the various posts and infos that are posted. I now have a question for the group: I am wanting to get some information on a powersupply that I have, which is ex repeater use. It is a Motorola and is model number 25D84880NO2. It has a 13.8v dc secondary and a 14 v dc secondary. The 13.8v is for supplying the radios and the 14v for charging batteries, it seems. I would like to use this as a power source in my motorhome and use the 14v to charge two 225 amp/hour Gel batteries. There is a circuit board on this supply with three 4 amp fuses and one 10amp fuse, an eight posted plug and an equalise switch. Can anyone help me with a circuit, wiring information, and idea of what the eight pins are for? All and any information will be muchly appreciated. I have two 55 watt panels to add to the setup also and would appreciate any ideas as to an ideal setup and control configuration to get the best out of the setup. Thanks in advance. ( Ps: it will have a mobile UHF repeater connected up... just to keep this post on topic :-) 73 de Graham Shaw ZL3TV ( ex - ZL3TDA ) Christchurch New Zealand. __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com 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 supply identification request.
Hi to all on the list. I have lurked for a while and always get a great deal from reading the various posts and infos that are posted. I now have a question for the group: I am wanting to get some information on a powersupply that I have, which is ex repeater use. It is a Motorola and is model number 25D84880NO2. It has a 13.8v dc secondary and a 14 v dc secondary. The 13.8v is for supplying the radios and the 14v for charging batteries, it seems. I would like to use this as a power source in my motorhome and use the 14v to charge two 225 amp/hour Gel batteries. There is a circuit board on this supply with three 4 amp fuses and one 10amp fuse, an eight posted plug and an equalise switch. Can anyone help me with a circuit, wiring information, and idea of what the eight pins are for? All and any information will be muchly appreciated. I have two 55 watt panels to add to the setup also and would appreciate any ideas as to an ideal setup and control configuration to get the best out of the setup. Thanks in advance. ( Ps: it will have a mobile UHF repeater connected up... just to keep this post on topic :-) 73 de Graham Shaw ZL3TV ( ex - ZL3TDA ) Christchurch New Zealand. 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] Re: Tait Repeaters
What series Tait? I have a couple of service manuals, but if I cannot help I'll ask around. I live in the same town as Angus Tait( THE Mr. Tait! ) 73 Gram, ZL3TV ( ex-ZL3TDA) -- In Repeater-Builder@yahoogroups.com, Brett [EMAIL PROTECTED] wrote: Hi Terry. What Tait repeaters do you have? I would need to know model # . Cheers - Original Message - From: tstone666 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, August 23, 2005 7:36 AM Subject: [Repeater-Builder] Tait Repeaters Any one have a manual? Any one know how the duplexer handles channel changes? What is the TX/RX seperation on the channel format i.e. + 5 megs like snip snip etc 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/
