RE: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
I'm suspecting the ferro cap after looking at it. It seems to have some oily residue on the top of the can so maybe it has been leaking. I'm unable to check capacitance but I did pull the leads of and check with my DMM on ohm range and its not shorted. It will start to charge up on the higher range but then again unknown capacitance. Anyone know where I can get a new cap like this?? Bill... -Original message- From: Jeff DePolo [EMAIL PROTECTED] Date: Mon, 05 Feb 2007 22:12:09 -0800 To: Repeater-Builder@yahoogroups.com Subject: RE: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem? Pull out the ferro cap and test it. Or alternatively, take the cap out, tape up the leads that went to it, and fire up the supply again and see if you get the same amount of sag under load. If so, then it sure sounds like the cap is open. --- Jeff Hi Jeff! Thanks for the reply. The no load voltage is about 14.1 volts. Bill... -Original message- From: Jeff DePolo [EMAIL PROTECTED] Date: Mon, 05 Feb 2007 16:28:07 -0800 To: Repeater-Builder@yahoogroups.com Subject: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem? I'm setting up a Mastr II VHF station for a 2 meter repeater and when I got to the power amp to check everything I can only get about 86 watts out of the 110watt PA. I noticed that the power supply starts to fold over at about 20 watts out and when I get to 80 watts the supply is only at around 8 to 9 volts. If this station is using the stock Mastr II supply, my first bet is that the capacitor in the ferro circuit (7.5 uF IIRC) is bad. What's the voltage without load? --- Jeff Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.411 / Virus Database: 268.17.25/669 - Release Date: 2/4/2007
RE: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
I'm suspecting the ferro cap after looking at it. Seems to me last time I ordered one I got it from either Newark or Allied. It might have been classified under motor-start capacitors or the like. I believe I was able to cross-ref the part number off the failed unit and get an exact replacement. M/A-Com probably still has replacement parts as well if you strike out elsewhere. --- Jeff
Re: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
Jeff and Repeater-Builders I have found a ready source of these caps to be at my local refrigeration supply. They have a very good assortment of motor start or motor run capacitors and they are AC not DC. Tom Manning, AF4UG - Original Message - From: Jeff DePolo To: Repeater-Builder@yahoogroups.com Sent: Friday, February 09, 2007 10:18 AM Subject: RE: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem? I'm suspecting the ferro cap after looking at it. Seems to me last time I ordered one I got it from either Newark or Allied. It might have been classified under motor-start capacitors or the like. I believe I was able to cross-ref the part number off the failed unit and get an exact replacement. M/A-Com probably still has replacement parts as well if you strike out elsewhere. --- Jeff
RE: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
I found a 7uf 660vac from Allied part no #591-7040 will that work? -Original message- From: Jeff DePolo [EMAIL PROTECTED] Date: Fri, 09 Feb 2007 16:18:00 -0800 To: Repeater-Builder@yahoogroups.com Subject: RE: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem? I'm suspecting the ferro cap after looking at it. Seems to me last time I ordered one I got it from either Newark or Allied. It might have been classified under motor-start capacitors or the like. I believe I was able to cross-ref the part number off the failed unit and get an exact replacement. M/A-Com probably still has replacement parts as well if you strike out elsewhere. --- Jeff
Re: [Spam] Re: [Repeater-Builder] Mastr II Station Power Supply Problem?
Nate Duehr wrote: Your organization going to be selling off those VHF's? Always looking... had to ask. Nate Don't know-we're storing them for the cust. till they decide what they want to do. Don't worry-this is the first place I think of if something is up for grabs! -- Jim Barbour WD8CHL
Re: [Spam] Re: [Repeater-Builder] Mastr II Station Power Supply Problem?
On 2/7/07, Jim B. [EMAIL PROTECTED] wrote: Your organization going to be selling off those VHF's? Always looking... had to ask. Don't know-we're storing them for the cust. till they decide what they want to do. Don't worry-this is the first place I think of if something is up for grabs! LOL.. understand. Thanks Jim. I've been doing INVENTORY ... uggghh. Built a real basement workbench (always had one in the garage, but it's COLD out there!) finally... amazing what you find when you start organizing... (sigh)... Nate
[Spam] Re: [Repeater-Builder] Mastr II Station Power Supply Problem?
It is definitly the 35amp power supply it has the large fuse holder on the back and the model number shown in my post looks up as a high current power supply capable of the 110watt station. I'm going to check the ferro cap and report back! -Original message- From: Nate Duehr [EMAIL PROTECTED] Date: Mon, 05 Feb 2007 22:14:09 -0800 To: Repeater-Builder@yahoogroups.com Subject: [Spam] Re: [Repeater-Builder] Mastr II Station Power Supply Problem? On 2/5/07, Bill Hudson [EMAIL PROTECTED] wrote: If you have the high current model, it has a BUSS NON-35 AMP one-time FUSE (Class K5), and is 3 inches long. The 15 Amp fuse is a NON-15 (obviously), and is considerably smaller in size, and is 2 inches in length. It will be obvious when you look at the fuse holder / fuse. I could look up some model numbers, but this information will tell you if you have the smaller power supply in a BIG BOY application. Visually, this is the black plastic soap dish fuse holder versus the larger fuse holder directly bolted on the back with a metal shield over it. I could probably take photos of both types given enough time, if someone badly wanted them. I just racked a soap dish into a very difficult rack to get things in and out of, though -- so it'd be no fun to pull it back out and shoot a digital pic... (sigh - bad timing, as always...). Nate WY0X
Re: [Spam] Re: [Repeater-Builder] Mastr II Station Power Supply Problem?
On 2/5/07, Bill Hudson [EMAIL PROTECTED] wrote: If you have the high current model, it has a BUSS NON-35 AMP one-time FUSE (Class K5), and is 3 inches long. The 15 Amp fuse is a NON-15 (obviously), and is considerably smaller in size, and is 2 inches in length. It will be obvious when you look at the fuse holder / fuse. I could look up some model numbers, but this information will tell you if you have the smaller power supply in a BIG BOY application. Visually, this is the black plastic soap dish fuse holder versus the larger fuse holder directly bolted on the back with a metal shield over it. H-the two pallets of VHF 100W cont. duty repeaters we just pulled out of service all have the plastic fuse holder with the snap-on lid and 15A NON fuses... -- Jim Barbour WD8CHL
Re: [Spam] Re: [Repeater-Builder] Mastr II Station Power Supply Problem?
On 2/6/07, Jim B. [EMAIL PROTECTED] wrote: Visually, this is the black plastic soap dish fuse holder versus the larger fuse holder directly bolted on the back with a metal shield over it. H-the two pallets of VHF 100W cont. duty repeaters we just pulled out of service all have the plastic fuse holder with the snap-on lid and 15A NON fuses... Yes, the soap dish variety holds the smaller fuses. The big metal cover over the fuse indicates the larger variety. Easy to spot from a distance when hunting for them in a pile. Did I say something else? ;-) Your organization going to be selling off those VHF's? Always looking... had to ask. Nate
RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
I'm setting up a Mastr II VHF station for a 2 meter repeater and when I got to the power amp to check everything I can only get about 86 watts out of the 110watt PA. I noticed that the power supply starts to fold over at about 20 watts out and when I get to 80 watts the supply is only at around 8 to 9 volts. If this station is using the stock Mastr II supply, my first bet is that the capacitor in the ferro circuit (7.5 uF IIRC) is bad. What's the voltage without load? --- Jeff
RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
SO what happens when you connect a larger power supply ? From: Bill [EMAIL PROTECTED] Reply-To: Repeater-Builder@yahoogroups.com To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Mastr II Station Power Supply Problem? Date: Sun, 04 Feb 2007 22:01:14 - I'm setting up a Mastr II VHF station for a 2 meter repeater and when I got to the power amp to check everything I can only get about 86 watts out of the 110watt PA. I noticed that the power supply starts to fold over at about 20 watts out and when I get to 80 watts the supply is only at around 8 to 9 volts. This Mastr II station has the PLL exciter but they gave me a 4 transistor power amp the original amp was missing. This is the newer type station with the IDA controller. I looked up the model number of the supply and it's a PL19D430272G1 Rev 4 which shows to be the right power supply for the station. I don't have my spectrum analyzer at the moment so I can't tell if the power amp is spurring although station metering shows below rated current on transmit. Any clues? Bill... _ Advertisement: It's simple! Sell your car for just $20 at carsales.com.au http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fsecure%2Dau%2Eimrworldwide%2Ecom%2Fcgi%2Dbin%2Fa%2Fci%5F450304%2Fet%5F2%2Fcg%5F801577%2Fpi%5F1005244%2Fai%5F838588_t=757768878_r=endtext_simple_m=EXT
RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
Master II Base Station / Repeater Power Supplies come in four flavors. The most important information is: Two are fused at 15 Amps, and two are fused at 35 amps. If you have the high current model, it has a BUSS NON-35 AMP one-time FUSE (Class K5), and is 3 inches long. The 15 Amp fuse is a NON-15 (obviously), and is considerably smaller in size, and is 2 inches in length. It will be obvious when you look at the fuse holder / fuse. I could look up some model numbers, but this information will tell you if you have the smaller power supply in a BIG BOY application. Bill Hudson W6CBS Subject: RE: [Repeater-Builder] Mastr II Station Power Supply Problem? I'm setting up a Mastr II VHF station for a 2 meter repeater and when I got to the power amp to check everything I can only get about 86 watts . . . BEGIN:VCARD VERSION:2.1 N:;W6CBS FN:W6CBS ORG:Hudson Sports Productions TITLE:Broadcast Engineer TEL;WORK;VOICE:1-650-595-5566 TEL;PREF:1-650-595-5566 ADR;WORK:;1-650-595-5566;P O Box 7143;San Carlos;California;94070;USA LABEL;WORK;ENCODING=QUOTED-PRINTABLE:1-650-595-5566=0D=0AP O Box 7143=0D=0ASan Carlos, California 94070=0D=0AUSA EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:20060508T165031Z END:VCARD
[Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
Hi Jeff! Thanks for the reply. The no load voltage is about 14.1 volts. Bill... -Original message- From: Jeff DePolo [EMAIL PROTECTED] Date: Mon, 05 Feb 2007 16:28:07 -0800 To: Repeater-Builder@yahoogroups.com Subject: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem? I'm setting up a Mastr II VHF station for a 2 meter repeater and when I got to the power amp to check everything I can only get about 86 watts out of the 110watt PA. I noticed that the power supply starts to fold over at about 20 watts out and when I get to 80 watts the supply is only at around 8 to 9 volts. If this station is using the stock Mastr II supply, my first bet is that the capacitor in the ferro circuit (7.5 uF IIRC) is bad. What's the voltage without load? --- Jeff
RE: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
Pull out the ferro cap and test it. Or alternatively, take the cap out, tape up the leads that went to it, and fire up the supply again and see if you get the same amount of sag under load. If so, then it sure sounds like the cap is open. --- Jeff Hi Jeff! Thanks for the reply. The no load voltage is about 14.1 volts. Bill... -Original message- From: Jeff DePolo [EMAIL PROTECTED] Date: Mon, 05 Feb 2007 16:28:07 -0800 To: Repeater-Builder@yahoogroups.com Subject: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply Problem? I'm setting up a Mastr II VHF station for a 2 meter repeater and when I got to the power amp to check everything I can only get about 86 watts out of the 110watt PA. I noticed that the power supply starts to fold over at about 20 watts out and when I get to 80 watts the supply is only at around 8 to 9 volts. If this station is using the stock Mastr II supply, my first bet is that the capacitor in the ferro circuit (7.5 uF IIRC) is bad. What's the voltage without load? --- Jeff Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.411 / Virus Database: 268.17.25/669 - Release Date: 2/4/2007
Re: [Repeater-Builder] Mastr II Station Power Supply Problem?
On 2/5/07, Bill Hudson [EMAIL PROTECTED] wrote: If you have the high current model, it has a BUSS NON-35 AMP one-time FUSE (Class K5), and is 3 inches long. The 15 Amp fuse is a NON-15 (obviously), and is considerably smaller in size, and is 2 inches in length. It will be obvious when you look at the fuse holder / fuse. I could look up some model numbers, but this information will tell you if you have the smaller power supply in a BIG BOY application. Visually, this is the black plastic soap dish fuse holder versus the larger fuse holder directly bolted on the back with a metal shield over it. I could probably take photos of both types given enough time, if someone badly wanted them. I just racked a soap dish into a very difficult rack to get things in and out of, though -- so it'd be no fun to pull it back out and shoot a digital pic... (sigh - bad timing, as always...). Nate WY0X
RE: [Repeater-Builder] Mastr II Station Power Supply Problem?
There's a safety note on the GE ferroresonant supply plus some info on fuse sizes here: http://www.repeater-builder.com/ge/mastr2/m2-arcing.html Mike WA6ILQ At 01:32 PM 02/05/07, you wrote: Master II Base Station / Repeater Power Supplies come in four flavors. The most important information is: Two are fused at 15 Amps, and two are fused at 35 amps. If you have the high current model, it has a BUSS NON-35 AMP one-time FUSE (Class K5), and is 3 inches long. The 15 Amp fuse is a NON-15 (obviously), and is considerably smaller in size, and is 2 inches in length. It will be obvious when you look at the fuse holder / fuse. I could look up some model numbers, but this information will tell you if you have the smaller power supply in a BIG BOY application. Bill Hudson W6CBS Subject: RE: [Repeater-Builder] Mastr II Station Power Supply Problem? I'm setting up a Mastr II VHF station for a 2 meter repeater and when I got to the power amp to check everything I can only get about 86 watts . . .
