[amsat-bb] Yaesu G-5400 Rotators with Yaesu G-5500 Control Box

Alan wa4sca at gmail.com
Thu Apr 27 19:46:25 UTC 2017


Unfortunately the rotators used in the G-5400 are not quite the same as the

They both use a phase shift capacitor for full torque, and also a method of
protecting the motor in case it hangs.  In the G-5400, the azimuth rotator
has the capacitor in the control box, and uses thermal limit switches.  The
elevation rotator has the capacitor located in the rotator housing, and uses
mechanical limit switches.  In the G-5500, both units have the capacitor in
the rotator, and mechanical limit switches. For completeness, the original
Kenpros, which Yaesu acquired, had the capacitors for both in the control
boxes. There are reasons why mounting the capacitor remotes is better, but
it is much messier to replace, and more likely to fail due to the
temperature extremes.



<-----Original Message-----
<From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of
<Vincenzo Mone
<Sent: Thursday, April 27, 2017 12:04 PM
<To: amsat-bb at amsat.org
<Subject: [amsat-bb] Yaesu G-5400 Rotators with Yaesu G-5500 Control Box
<Hi folks,
<I own the  Yaesu G-5400 rotators ( Azimuth and Elevation ) and  the Yaesu
<5500 complete with the Control Boxes.
<As I have problems with both the G-5500 Azimuth and Elevation Rotors and as
<I still have both the G-5400 ones, I would like to know if I can use both
the G-
<5400B rotators with the G-5500 Control Box or I need by force the original
<I saw that the difference between the two Control Box is the Azimuth
<that the G-5400B one has on the left and on the right side of the display:
180 S,
<while the G-5500 one has on the left side of the display: 0 N and on the
<side of the display 90 E.
<Please anybody can help me to avoid any damage?
<Any help will be really appreciated.
<Thanks in advance
<73's de Enzo IK8OZV
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