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@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
>
> On Fri, Aug 6, 2021 at 8:55 AM <k1ttt.dave@gmail.com> wrote:
>
>> Well, yes, kinda, maybe in a pinch.... all the boxes use the same 5 pins
>> for motor power and indication, so yes, they can all be used if needed to
>> power each other... HOWEVER, the 2700 and 2800 use the 6th pin to detect
>> when it is getting near the end of travel to invoke an auto slowdown to
>> keep the more powerful motor and likely heavier antenna from hitting the
>> hard stop too hard.
>>
>> David Robbins K1TTT
>> e-mail: mailto:k1ttt@arrl.net
>> web: http://wiki.k1ttt.net
>> AR-Cluster node: telnet://k1ttt.net:7373
>>
>>
>> -----Original Message-----
>> From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of k7lxc---
>> via TowerTalk
>> Sent: Friday, August 6, 2021 11:35
>> To: towertalk@contesting.com
>> Subject: [TowerTalk] Yaesu contol box?
>>
>> Howdy, TowerTalkians -
>>
>> Are Yaesu control boxes interchangeable? Since they all have the same
>> wiring, I'm thinking that they can all work with other Yaesu rotators. Is
>> this right? Tnx. Cheers,Steve K7LXC
>> _______________________________________________
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