[TowerTalk] Yaesu Rotors

[Grant Saviers]

I did get the 2800SDX controller working properly with a G1000 rotator, 
interesting that the 2800 controller has the ramp down speed to stop 
logic/ckts in it and they work ok also.

However, somewhere along the way the rotator was put together with the 
CW/CCW stop switches not aligned with the internal pot.  Before I take 
it apart (again) to retime it, are there any instructions/posts about 
how to get that set properly?  i.e. going CCW I run out of needle 
movement at 220 deg and the rotator continues to 180 deg and the switch 
stop.  Since many of the bearing balls always end up loose, I'd rather 
do this accurately than several trials to retime it.

Note to self - always mark top and bottom case alignments before 
loosening screws!

btw the mini-Molex connectors on some of the controllers end up with 
weak/sprung pins, another PITA.  Someday, I'll convert all of them and 
the cables to a decent connector.

Grant KZ1W


On 5/13/2014 4:26 AM, David Robbins wrote:
> the controllers for the g800,1000,2700, and 2800 sdx and dxa are all interchangeable as far as I have seen with the exception of the plugs and one little detail...
> the 2700 and 2800 have an extra limit switch to do the automatic slowdown when you get near the stops.  that is the 6th wire that is used on them that isn't used on the
> 800/1000 series.  I have replaced all my control boxes with greenherons now.
>
>
> May 13, 2014 01:02:37 AM, SawyerEd at Earthlink.net wrote:
>
> Thanks Grant. This looks like a project looming for me may this winter. I
> have a few of these rotor units and would love to get one good 2800 out of
> them as a spare. I will let the group know how it turns out.
>
> Ed N1UR
>
> -----Original Message-----
> From: Grant Saviers [mailto:grants2 at pacbell.net]
> Sent: Sunday, May 11, 2014 2:13 PM
> To: Edward Sawyer; towertalk at contesting.com
> Subject: Re: [TowerTalk] Yaesu Rotors
>
> The basic control/indicate design is the same in all, as far as I can tell.
> A 500 ohm pot inside the rotator and a servo in the controller that nulls an
> inside pot to match (not sure the value). The schematics and pcb
> implementation inside the controller is a witches brew mess, and the gear
> train + o-ring belt drive a total PITA to replace the o-ring pointer "drive
> belt".
>
> Shortly I will connect a 2800SDX control to a G1000 rotator as the G1000SDX
> controller is flakey. Then one more cross over will be tested. If not,
> then both controllers get pitched for a Green Heron.
>
> My G1000SDA control works fine with a G1000SDX rotator, but having had the
> rotator apart I think all G1000 rotators are identical. Might also be true
> for the 2800 series.
>
> Motors, gears and bearing arrangements are different among the rotator
> families AFAIK. Limit switches look to be stock micro-switch variants.
>
> I replace the bizarre keyed Jones type receptacle on the 2800 series
> controls with a stock Jones 300 6 pin from Mouser. $5.
>
> Grant KZ1W
>
> On 5/11/2014 9:22 AM, Edward Sawyer wrote:
>> Dear Towertalkians:
>>
>>
>>
>> Repair Shop - Does anyone know if Yaesu Repair services the in tower
> units?
>> It seems that maybe they have stopped. They were the only ones that
>> did before.
>>
>>
>>
>> Swappable Parts - What is the feeling of parts inside the housing as
>> far as interchangability? Pots, limit switches, motors, etc between
>> the 800, 1000, and 2800 series?
>>
>>
>>
>> Thanks for any info.
>>
>>
>>
>> 73
>>
>>
>>
>> Ed N1UR
>>
>> _______________________________________________
>>
>>
>>
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