[TowerTalk] Yaesu contol box?

[john at kk9a.com]

Perhaps only the G-450A (now G-450ADC) recently changed to DC?

John KK9A


Jack Brindle W6FB wrote:

It happened long before 2019. My G-1000DXA from the 2000's is a DC device.
Schematics for the controllers and rotors are on-line and available.

73,
Jack, W6FB


> On Aug 6, 2021, at 1:47 PM, Grant Hopper <kb7wsd at gmail.com> wrote:
> 
> There is one "gotcha" to all this.  In 2019, Yaesu changed to using DC on
> the rotors.   From DX-Engineering "  Instead of the usual AC motor drive
> used in older rotator designs, the G-2800DXA, G-1000DXA and G-800DXA use a
> variable-voltage DC motor, removing the need for a large starting
capacitor
> with its potential for failure exposed to outside temperature variations.
> "  The 450 and the 5500 are the same way.
> 
> There might be an easy way to determine the AC vs DC upon inspection.  I
> haven't looked at all the manuals to confirm this but at least with the
> 450, it uses only four wires for DC types.  Otherwise, some of the models
> are stamped with a "DC" after the model number eg. " For clarity, the new
> DC rotator motors are marked "G-450DC" at the connector. The rear panel of
> the controller is titled "G-450ADC" on the serial number label."
> 
> 73,
> Grant
> KB7WSD