G-5500 and LVB tracker question.
I have the G-5500 and a LVB Tracker on my antenna set. I have noticed that when the pair are just setting there the LVB tracker will loose its place. By that I mean if the G-5500 box is at 180* the LVB will start out at 180 but as it sets there it will soon be at 178, 174, 172 and so on. I also noted the meter on the g-5500 is going down too. Where do I start looking ?
Marv N0FJP
Hi Marv.
If you have the LCD fitted, do both the left and right Az/El readings move too?
I am assuming you don't have the problem if the LVB Tracker is unplugged.
73, Howard G6LVB
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of racer5039 Sent: 30 June 2009 00:13 To: [email protected] Subject: [amsat-bb] G-5500 and LVB tracker question.
I have the G-5500 and a LVB Tracker on my antenna set. I have noticed that when the pair are just setting there the LVB tracker will loose its place. By that I mean if the G-5500 box is at 180* the LVB will start out at 180 but as it sets there it will soon be at 178, 174, 172 and so on. I also noted the meter on the g-5500 is going down too. Where do I start looking ?
Marv N0FJP _______________________________________________ Sent via [email protected]. 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
Hi Howard and Marv,
I had exactly the same problem. The issue revolved around the 7806 regulator the is used in the G-5500 control box that supplied the 6V DC to the position feedback potentiometers on the rotators. If you monitor the output voltage of the regulator, you will find they drift down considerably as the box warms up. Maybe they had a bad batch. I replaced the 7806 with a LM317T set for 6V and that solved the problem.
73's Allan Saul ZS1LS
-----Original Message----- From: Howard Long [mailto:[email protected]] Sent: 30 June 2009 10:09 AM To: 'racer5039'; [email protected] Subject: [amsat-bb] Re: G-5500 and LVB tracker question.
Hi Marv.
If you have the LCD fitted, do both the left and right Az/El readings move too?
I am assuming you don't have the problem if the LVB Tracker is unplugged.
73, Howard G6LVB
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of racer5039 Sent: 30 June 2009 00:13 To: [email protected] Subject: [amsat-bb] G-5500 and LVB tracker question.
I have the G-5500 and a LVB Tracker on my antenna set. I have noticed that when the pair are just setting there the LVB tracker will loose its place. By that I mean if the G-5500 box is at 180* the LVB will start out at 180 but as it sets there it will soon be at 178, 174, 172 and so on. I also noted the meter on the g-5500 is going down too. Where do I start looking ?
Marv N0FJP _______________________________________________ Sent via [email protected]. 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
participants (3)
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Allan Saul -
Howard Long -
racer5039