[amsat-bb] Re: Yaesu 5500 rotor question
Hi Floyd, KC5QBC With the upper assembly separated from the lover part of the rotor rotate the azimuth motor until the position of the slider of the 500 ohm potentiometer comes mid way i.e. 250 + 250 ohm i.e. until it will show the same voltage of about 3 volt betwen terminals 1 and 2 and terminals 2 and 3 Terminal 2 is the slider of the potentiometer i.e. is the cursor. Now mechanically mount again the upper part of the motor hood midway betwen both limit switches. It's all you have to do to get again the calibration between the potentiometer and the upper part of the assembly. 73 de i8CVS Domenico - Original Message - From: Floyd Rodgers kc5...@swbell.net Cc: Amsat Buleitin Board amsat-bb@amsat.org Sent: Thursday, August 02, 2012 3:10 AM Subject: [amsat-bb] Yaesu 5500 rotor question I had a 5500 azmith rotator lockup over winter. I finally had time to take it down and find the problem. Now a different problem. I forgot to mark the housing position before separating the upper/lower azmith assemblies. I think I know where it was pointed, but how can I tell where it should be aligned? Is this really a non issue? ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotor question
Hi Floyd, Domenico's advice is quite good. I also wrote a section on aligning a g5500 az rotator from scratch, its at the bottom of this post: http://kb5wia.blogspot.com/2012/03/az-el-antenna-system-new-70cm-yagi-and.html 73 de Dave KB5WIA On Aug 3, 2012 6:18 PM, i8cvs domenico.i8...@tin.it wrote: Hi Floyd, KC5QBC With the upper assembly separated from the lover part of the rotor rotate the azimuth motor until the position of the slider of the 500 ohm potentiometer comes mid way i.e. 250 + 250 ohm i.e. until it will show the same voltage of about 3 volt betwen terminals 1 and 2 and terminals 2 and 3 Terminal 2 is the slider of the potentiometer i.e. is the cursor. Now mechanically mount again the upper part of the motor hood midway betwen both limit switches. It's all you have to do to get again the calibration between the potentiometer and the upper part of the assembly. 73 de i8CVS Domenico - Original Message - From: Floyd Rodgers kc5...@swbell.net Cc: Amsat Buleitin Board amsat-bb@amsat.org Sent: Thursday, August 02, 2012 3:10 AM Subject: [amsat-bb] Yaesu 5500 rotor question I had a 5500 azmith rotator lockup over winter. I finally had time to take it down and find the problem. Now a different problem. I forgot to mark the housing position before separating the upper/lower azmith assemblies. I think I know where it was pointed, but how can I tell where it should be aligned? Is this really a non issue? ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotator
I like about 10 feet of steel tubing mounted as shown here: http://www.g6lvb.com/fibermetalboom.htm 73, Joe kk0sd ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotator
Mike, Think to equalize the weights- If you have a large 2 meter beam on one side, that should be the shorter...IE The 440 should be longer as it will be lighter. Same with the front and back... This will have the rotor work the easiest and let it survive a lot longer...Balance them. 73, Dee, NB2F -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Mike Sent: Saturday, August 13, 2011 9:09 AM To: amsat-bb@amsat.org Subject: [amsat-bb] Yaesu 5500 rotator Sensitivity: Personal I was wondering how long of a shaft I should use to go through the rotator? What is the norm. to have on each side if there is one? Mike N8GBU ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotator
Mike: My Cushcraft Oscar 2M/70cm elevation rotator had a aluminum crossboom at 50 inches in length x 1 5/16 inch in diameter. I would recommend a fiberglass crossboom vice aluminum to keep detuning of both antennas to a minimum. Mike Schaffer KA3JAW ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotor problem
Hi Jeff, KB2M Disconnect A1 and E1 from the rear of control box and measure the voltage between input and ground at the imput of voltage regulator Q2 7806C and it must be about 12 volt DC. Since the voltage you measured at the output of Q2 7806C is lover than 5 volt DC i.e about 1 volt DC disconnect C9 , 0.01 uF and measure again. If the voltage is still lover than 5 volt DC than the voltage regulatore Q2 7806C is gone and must replaced. Have fun. 73 de i8CVS Domenico - Original Message - From: Jeff KB2M k...@comcast.net To: 'Amsat - BBs' amsat-bb@amsat.org Sent: Thursday, July 21, 2011 3:25 AM Subject: [amsat-bb] Re: Yaesu 5500 rotor problem Thanks for all the replies on my 5500 rotor problem! I had some time tonite to work on it and here's what I got. On both a1 a3, and e1 e3 pairs I'm reading only 1.0 volts. Between a2 a3 , and e2 e3 pairs I see only .5 volts at half range, IE an elevation of 90 degrees = a reading of .5 volts. I'm going to order a new Q2 UA7806C and this should do it. Only question I have is why Q2 failed to only output 1 volt, don't they usually fail and output 0 volts? I'm thinking it might be something else in the circuit feeding power to Q2. If so I will work this further when I actually take the rotor box apart with the new Q2 in hand. One other thing, I wish I can find all my components' I boxed up when I moved. I bet I have 10 of these in stock :) Thanks again for all the help guys, the electronic copy of the manual was a big help as I can't find my copy 73 Jeff kb2m I'm having a problem with my 5500 after a thunderstorm. What is happening is that the rotor works manually, but doesn't display az and el information on the control box. Also when I try to use computer control it goes all the way to stop in both azimuth and elevation. I'm thinking this might be in the control box, as both az and el are doing the same thing, the control box being the single point of failure. Did anyone ever have this problem? How can I diagnosis what chip might be at fault without a schematic. I vaguely remember having this same problem after a close lightning strike with my prior az el Yaesu box about 14 years ago but don't remember what chip I swapped out, or how I determined which one was at fault. This getting old thing really sucks. Any help would be appreciated. 73 Jeff kb2m ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotor problem
Thanks for all the replies on my 5500 rotor problem! I had some time tonite to work on it and here's what I got. On both a1 a3, and e1 e3 pairs I'm reading only 1.0 volts. Between a2 a3 , and e2 e3 pairs I see only .5 volts at half range, IE an elevation of 90 degrees = a reading of .5 volts. I'm going to order a new Q2 UA7806C and this should do it. Only question I have is why Q2 failed to only output 1 volt, don't they usually fail and output 0 volts? I'm thinking it might be something else in the circuit feeding power to Q2. If so I will work this further when I actually take the rotor box apart with the new Q2 in hand. One other thing, I wish I can find all my components' I boxed up when I moved. I bet I have 10 of these in stock :) Thanks again for all the help guys, the electronic copy of the manual was a big help as I can't find my copy 73 Jeff kb2m I'm having a problem with my 5500 after a thunderstorm. What is happening is that the rotor works manually, but doesn't display az and el information on the control box. Also when I try to use computer control it goes all the way to stop in both azimuth and elevation. I'm thinking this might be in the control box, as both az and el are doing the same thing, the control box being the single point of failure. Did anyone ever have this problem? How can I diagnosis what chip might be at fault without a schematic. I vaguely remember having this same problem after a close lightning strike with my prior az el Yaesu box about 14 years ago but don't remember what chip I swapped out, or how I determined which one was at fault. This getting old thing really sucks. Any help would be appreciated. 73 Jeff kb2m ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 Rotor Problem
Jeff, KB2M, I am sending the schematic for the G-5500 separately. Disconnect Azimuth and Elevation wires 1, 2, and 3 from the Control box. Check the resistance across the 1 and 3 leads. It should be 500 ohms. Check the resistance across the 1 and 2 leads. It should be between 0 and 500 ohms and should change as the rotors are turned. If these tests pass, the problem is in the control box. If not, the problem is the pots in the rotors. If the pots are OK, the problem is somewhat more complicated. Looking at the schematic, there are separate circuits for the meters and for the feedback level to your automatic control. If the IC's failed, the ones involved are Q3 and Q4 which are 4558s. Since these are dual circuit ICs, that would mean 4 failures at the same time. Not likely, but possible. More likely the problem is either in the Q1 power supply circuit which provides the power for Q3 and Q4 or the Q2 regulator, a 7806, which provides the voltage to the pots. A failure in these circuits would kill the meter readouts and the voltage feedback to the automatic control. John Kopala N7JK Date: Tue, 19 Jul 2011 16:54:10 -0400 From: Jeff KB2Mk...@comcast.net Subject: [amsat-bb] Yaesu 5500 rotor problem To:amsat-bb@amsat.org Message-ID:003b01cc4656$05d2e1e0$1178a5a0$@net Content-Type: text/plain; charset=us-ascii I'm having a problem with my 5500 after a thunderstorm. What is happening is that the rotor works manually, but doesn't display az and el information on the control box. Also when I try to use computer control it goes all the way to stop in both azimuth and elevation. I'm thinking this might be in the control box, as both az and el are doing the same thing, the control box being the single point of failure. Did anyone ever have this problem? How can I diagnosis what chip might be at fault without a schematic. I vaguely remember having this same problem after a close lightning strike with my prior az el Yaesu box about 14 years ago but don't remember what chip I swapped out, or how I determined which one was at fault. This getting old thing really sucks. Any help would be appreciated. 73 Jeff kb2m ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotor problem
Hi Jeff, I had an indication problem on my 5500 many years ago I opened the rotor and discovered that there was a cold solder joint on of the pot contacts...a proper solder joint solved the problem...an easy one to check first.. I'm having a problem with my 5500 after a thunderstorm. What is happening is that the rotor works manually, but doesn't display az and el information on the control box. Also when I try to use computer control it goes all the way to stop in both azimuth and elevation. I'm thinking this might be in the control box, as both az and el are doing the same thing, the control box being the single point of failure. Did anyone ever have this problem? How can I diagnosis what chip might be at fault without a schematic. I vaguely remember having this same problem after a close lightning strike with my prior az el Yaesu box about 14 years ago but don't remember what chip I swapped out, or how I determined which one was at fault. This getting old thing really sucks. Any help would be appreciated. 73 Jeff kb2m ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb 73, Dave, WB6LLO dguim...@san.rr.com Disagree: I learn Pulling for P3E... ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotor problem
Hi Jeff, KB2M I have sent to you the schematic diagram for the G5500 but the message bounced back to me because your @comcast.net don't match with my @tin.it By the way and first of all check if you have 5 volt DC between studs A1 and A3 and between studs E1 and E3 on the rear of control box. If you don't have 5 volts DC probably the regulator Q2 7806C is gone. If you have another email address please let me know and I will try again to send you the schematic diagram. 73 de i8CVS Domenico - Original Message - From: Jeff KB2M k...@comcast.net To: amsat-bb@amsat.org Sent: Tuesday, July 19, 2011 10:54 PM Subject: [amsat-bb] Yaesu 5500 rotor problem I'm having a problem with my 5500 after a thunderstorm. What is happening is that the rotor works manually, but doesn't display az and el information on the control box. Also when I try to use computer control it goes all the way to stop in both azimuth and elevation. I'm thinking this might be in the control box, as both az and el are doing the same thing, the control box being the single point of failure. Did anyone ever have this problem? How can I diagnosis what chip might be at fault without a schematic. I vaguely remember having this same problem after a close lightning strike with my prior az el Yaesu box about 14 years ago but don't remember what chip I swapped out, or how I determined which one was at fault. This getting old thing really sucks. Any help would be appreciated. 73 Jeff kb2m ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 rotor problem
Jeff - Yaesu G-5500 Owner / Operator's Manual -- Schematic Diagram on LAST Page. http://gatorradio.org/Manuals/Yaesu_G-5500_Operating_Rotor_Manual.pdf If you have the paper manual, you have the schematic. LINK to Electronic version provided above. Fairly straight forward, component level troubleshooting with a VOM/DVM (Logic probe useful). greg w9gb == Date: Tue, 19 Jul 2011 16:54:10 -0400 From: Jeff KB2M Subject: [amsat-bb] Yaesu 5500 rotor problem To: amsat-bb I'm having a problem with my 5500 after a thunderstorm. What is happening is that the rotor works manually, but doesn't display AZ and EL information on the control box. When I try to use computer control it goes all the way to stop in both azimuth and elevation. I'm thinking this might be in the control box, as both AZ and EL are doing the same thing, the control box being the single point of failure. Did anyone ever have this problem? How can I diagnosis what chip might be at fault without a schematic. I vaguely remember having this same problem after a close lightning strike with my prior AZ EL Yaesu box about 14 years ago, but don't remember what chip I swapped out, or how I determined which one was at fault. This getting old thing really sucks. Any help would be appreciated. 73 Jeff kb2m ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 Rotor Problem
Bill, Start by checking the connections in the shack at the controller. If they are good, then disconnect lines 1, 2, and 3 on the elevation side and check the _cables_ with an ohm meter. You should read 500 ohms between 1 and 3, and something intermediate between 1 and 2, and between 2 and 3. If the antenna is parked, one of them will be close to 0 ohms, and the other almost 500 ohms, so it is better to point the antenna at 45 degrees or so. You can see a clear difference, and eliminate a shorted or open line. If this checks good, then the problem is inside the controller. If you don't, then you either have a bad connection in the cable or connector at the rotator, or the reference potentiometer is bad in the rotator. The easiest way to check this is to swap the connectors at the rotators. The systems are electrically identical. If the problem follows the connectors, there is a problem in the cable or connector. If not, it is in the rotator. Fixing the rotator pot is messy but straight forward, requiring only mechanical skills, and there have been several reports on how to do that. Fixing the controller depends on what is wrong. In either case, Yaesu will repair them for a modest fee. Let us know what you find. Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Bill Gillenwater Sent: Friday, January 28, 2011 8:21 AM To: AmsatBBS Subject: [amsat-bb] Yaesu 5500 Rotor Problem The meter for elevation on the Yaesu 5500 is not working. Any idea what might be wrong? Are there places to have them fixed if I can't shoot the bug? Thanks. Bill K3SV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 Rotor Problem
Bill, Alan seems to have covered all the troubleshooting areas for this rotor- Simple system. From what I have seen here on the BB, It is a toss up between poor connections and Pot probs. Good luck... Dee, NB2F -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Alan P. Biddle Sent: Friday, January 28, 2011 9:51 AM To: 'Bill Gillenwater'; 'AmsatBBS' Subject: [amsat-bb] Re: Yaesu 5500 Rotor Problem Bill, Start by checking the connections in the shack at the controller. If they are good, then disconnect lines 1, 2, and 3 on the elevation side and check the _cables_ with an ohm meter. You should read 500 ohms between 1 and 3, and something intermediate between 1 and 2, and between 2 and 3. If the antenna is parked, one of them will be close to 0 ohms, and the other almost 500 ohms, so it is better to point the antenna at 45 degrees or so. You can see a clear difference, and eliminate a shorted or open line. If this checks good, then the problem is inside the controller. If you don't, then you either have a bad connection in the cable or connector at the rotator, or the reference potentiometer is bad in the rotator. The easiest way to check this is to swap the connectors at the rotators. The systems are electrically identical. If the problem follows the connectors, there is a problem in the cable or connector. If not, it is in the rotator. Fixing the rotator pot is messy but straight forward, requiring only mechanical skills, and there have been several reports on how to do that. Fixing the controller depends on what is wrong. In either case, Yaesu will repair them for a modest fee. Let us know what you find. Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Bill Gillenwater Sent: Friday, January 28, 2011 8:21 AM To: AmsatBBS Subject: [amsat-bb] Yaesu 5500 Rotor Problem The meter for elevation on the Yaesu 5500 is not working. Any idea what might be wrong? Are there places to have them fixed if I can't shoot the bug? Thanks. Bill K3SV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 Rotor Problem(Update)
Alan, I did all of the swaps and checks and eliminated several possibilities. Rotors seemed OK, cables OK. Took control cover off and checked a few voltages, wiggled a few things. Put it back together and it works. Must be a loose ground or connection somewhere. Seems to be working fine now. Thanks all who responded. Not sure but seems like something loose in the control box. 73 Bill K3SV - Original Message - From: Alan P. Biddle apbid...@united.net To: 'Bill Gillenwater' k...@pa.net; 'AmsatBBS' amsat-bb@amsat.org Sent: Friday, January 28, 2011 9:51 AM Subject: [amsat-bb] Re: Yaesu 5500 Rotor Problem Bill, Start by checking the connections in the shack at the controller. If they are good, then disconnect lines 1, 2, and 3 on the elevation side and check the _cables_ with an ohm meter. You should read 500 ohms between 1 and 3, and something intermediate between 1 and 2, and between 2 and 3. If the antenna is parked, one of them will be close to 0 ohms, and the other almost 500 ohms, so it is better to point the antenna at 45 degrees or so. You can see a clear difference, and eliminate a shorted or open line. If this checks good, then the problem is inside the controller. If you don't, then you either have a bad connection in the cable or connector at the rotator, or the reference potentiometer is bad in the rotator. The easiest way to check this is to swap the connectors at the rotators. The systems are electrically identical. If the problem follows the connectors, there is a problem in the cable or connector. If not, it is in the rotator. Fixing the rotator pot is messy but straight forward, requiring only mechanical skills, and there have been several reports on how to do that. Fixing the controller depends on what is wrong. In either case, Yaesu will repair them for a modest fee. Let us know what you find. Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Bill Gillenwater Sent: Friday, January 28, 2011 8:21 AM To: AmsatBBS Subject: [amsat-bb] Yaesu 5500 Rotor Problem The meter for elevation on the Yaesu 5500 is not working. Any idea what might be wrong? Are there places to have them fixed if I can't shoot the bug? Thanks. Bill K3SV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500 Rotor Problem
To T/S the meter, swap the elevation wires with the azimuth wires and see if the problem follows the swap. I hope you did not do what I did: The contacts for the motor wires lay down onto the mete wires applying 26v to the meter ckt. Taking the control unit apart doesn't look fun. 73, Ed - KL7UW At 06:39 AM 1/28/2011, Dee wrote: Bill, Alan seems to have covered all the troubleshooting areas for this rotor- Simple system. From what I have seen here on the BB, It is a toss up between poor connections and Pot probs. Good luck... Dee, NB2F -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Alan P. Biddle Sent: Friday, January 28, 2011 9:51 AM To: 'Bill Gillenwater'; 'AmsatBBS' Subject: [amsat-bb] Re: Yaesu 5500 Rotor Problem Bill, Start by checking the connections in the shack at the controller. If they are good, then disconnect lines 1, 2, and 3 on the elevation side and check the _cables_ with an ohm meter. You should read 500 ohms between 1 and 3, and something intermediate between 1 and 2, and between 2 and 3. If the antenna is parked, one of them will be close to 0 ohms, and the other almost 500 ohms, so it is better to point the antenna at 45 degrees or so. You can see a clear difference, and eliminate a shorted or open line. If this checks good, then the problem is inside the controller. If you don't, then you either have a bad connection in the cable or connector at the rotator, or the reference potentiometer is bad in the rotator. The easiest way to check this is to swap the connectors at the rotators. The systems are electrically identical. If the problem follows the connectors, there is a problem in the cable or connector. If not, it is in the rotator. Fixing the rotator pot is messy but straight forward, requiring only mechanical skills, and there have been several reports on how to do that. Fixing the controller depends on what is wrong. In either case, Yaesu will repair them for a modest fee. Let us know what you find. Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Bill Gillenwater Sent: Friday, January 28, 2011 8:21 AM To: AmsatBBS Subject: [amsat-bb] Yaesu 5500 Rotor Problem The meter for elevation on the Yaesu 5500 is not working. Any idea what might be wrong? Are there places to have them fixed if I can't shoot the bug? Thanks. Bill K3SV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw*, 432-100w*, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.com == *temp not in service ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500
OK, Phone # 1-714-827-7600 Part #Q9000404 73's John On Tue, Jun 16, 2009 at 2:54 AM, Edward Cole kl...@acsalaska.net wrote: John, Please send me the phone number and part number. MY B5400 has been not in service for a couple years and I hope it works well when I get it back up this summer. But probably good insurance to have some pots. 73, Ed - KL7UW At 02:16 PM 6/15/2009, you wrote: Hey, I called Yaseu to order the pots and have 6 coming. Why so many you ask? I was going to order a few of the pots for the rotor as well while I was at it and found out they no longer stock them. If you have a 5400 I would call Yaesu and get some of the control box pots while they are still available. I have the phone number and part number if you need it. 73's John On Mon, Jun 15, 2009 at 9:20 AM, n8...@roadrunner.com wrote: John, Guess I should have mentioned that I have seen a problem with a dirty calibration pot. But to explain your symptoms, they would both have to be dirty. If the unit was stored for a while, maybe that is the case. '73 - de Ed N8BBQ -- N4QWF Amateur Radio Operator AO-7,AO-27,FO-29,SO-50,AO-51,VO-52,ISS Email n4...@amsat.org Echolink nodes #110903 -L #388463 http://home.comcast.net/~n4qwf/site/http://home.comcast.net/%7En4qwf/site/ Formerly KC4AHW VK3FEZ Amsat Member #27845 DXCC #33,478 VUCC SAT #135 WAS SAT #296 51 on AO-51 #13 LON -79.256 LAT 37.459 Grid FM07il From the Foothills of the Blueridge *Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming - WOW, What a ride! ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb -- N4QWF Amateur Radio Operator AO-7,AO-27,FO-29,SO-50,AO-51,VO-52,ISS Email n4...@amsat.org Echolink nodes #110903 -L #388463 http://home.comcast.net/~n4qwf/site/ Formerly KC4AHW VK3FEZ Amsat Member #27845 DXCC #33,478 VUCC SAT #135 WAS SAT #296 51 on AO-51 #13 LON -79.256 LAT 37.459 Grid FM07il From the Foothills of the Blueridge *Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming - WOW, What a ride! ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Yaesu 5500
Hey, I called Yaseu to order the pots and have 6 coming. Why so many you ask? I was going to order a few of the pots for the rotor as well while I was at it and found out they no longer stock them. If you have a 5400 I would call Yaesu and get some of the control box pots while they are still available. I have the phone number and part number if you need it. 73's John On Mon, Jun 15, 2009 at 9:20 AM, n8...@roadrunner.com wrote: John, Guess I should have mentioned that I have seen a problem with a dirty calibration pot. But to explain your symptoms, they would both have to be dirty. If the unit was stored for a while, maybe that is the case. '73 - de Ed N8BBQ -- N4QWF Amateur Radio Operator AO-7,AO-27,FO-29,SO-50,AO-51,VO-52,ISS Email n4...@amsat.org Echolink nodes #110903 -L #388463 http://home.comcast.net/~n4qwf/site/ Formerly KC4AHW VK3FEZ Amsat Member #27845 DXCC #33,478 VUCC SAT #135 WAS SAT #296 51 on AO-51 #13 LON -79.256 LAT 37.459 Grid FM07il From the Foothills of the Blueridge *Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming - WOW, What a ride! ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
