[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
RE: [Repeater-Builder] Re: Motorola Power Supply Questiona
Graham, The SP01 might refer to a power supply that is modified to operate on 230 VAC 50 Hz, or that is fitted with the special Type 1 plug used in New Zealand, or both. In any case, the SP01 does, in fact, mean that the unit is a special product that may have been custom-made for a particular customer, or that it is equipped with a non-standard option. I have no info on a TPN2264 power supply. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of zl3tda Sent: Saturday, February 27, 2010 5:05 PM To: Repeater-Builder@yahoogroups.com Subject: [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 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 mailto:Repeater-Builder%40yahoogroups.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 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 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
Re: [Repeater-Builder] Re: Motorola Power Supply Questiona
Hiya Graham, One of the reasons we binned these type of supplies was for excessive AC ripple that they produced, just be mindful of this on your adventures with sealed type batteries. By the way, If you need solar panels try this crowd out over in Oz, http://www.rockby.com.au/searchres.cfm?select=102offset=31stock_no=37970 Quite often they have some unbeatable specials if you are on their mailing list. Cheers for now Gareth - Original Message - From: zl3tda To: Repeater-Builder@yahoogroups.com Sent: Wednesday, February 24, 2010 9:47 PM Subject: [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
Re: [Repeater-Builder] Re: Motorola Power Supply Questiona
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
