Re: Ham M rotor to DXView


Bill Pence
 

Wow. That's more than I figured. And yes, the hd73 has no brake.


I think The original poster indicated he has the control box. I'd use that transformer and cap, or do the mods I had described.
But my transformer link for the rotator motor and his one for the brake.

But it's starting to get pricy....


On Wed, Aug 25, 2021, 9:05 AM Joe Subich, W4TV <lists@...> wrote:

 > I used a 75va controls transformer
 > https://www.amazon.com/gp/product/B013FV06PE
 > <https://www.amazon.com/gp/product/B013FV06PE>

75VA would not be enough with the HAM-M (or HAM-IV, T2X) as the
motor is rated 24V @ 2.25A and the brake rated 24V @ 5A for a
total of 174VA.  The controls transformer worked for your HD73
because the HD73 has no brake solenoid.

73,

    ... Joe, W4TV


On 2021-08-24 11:12 PM, Bill Pence wrote:
> Well, That was the path I took for the hd73 as I had nothing but the
> rotator.
>
> I used a 75va controls transformer
> https://www.amazon.com/gp/product/B013FV06PE
> <https://www.amazon.com/gp/product/B013FV06PE>
>
> with a motor start cap from ace hardware
> https://www.acehardware.com/departments/heating-and-cooling/air-conditioners-and-coolers/air-conditioner-parts-and-accessories/3000142
> <https://www.acehardware.com/departments/heating-and-cooling/air-conditioners-and-coolers/air-conditioner-parts-and-accessories/3000142>
>
> Worked out well.
>
>
> On Tue, Aug 24, 2021, 10:42 PM Joe Subich, W4TV <lists@...
> <mailto:lists@...>> wrote:
>
>
>     I no longer have an old style controller to photograph
>
>     Here is the manual:
>          <https://bama.edebris.com/download/cde/ham-m/ham-m.pdf
>     <https://bama.edebris.com/download/cde/ham-m/ham-m.pdf>>
>
>     There is a very much "cleaned up" photograph of the switch
>     as figure 5 on page 9.  Most of the wiring is not present
>     in the photograph.
>
>       > So connecting to the switch terminals should be straightfirward.
>
>     I remember being in that controller for repairs one time
>     and the wiring around the switch is a nightmare with two
>     or three wires already attached to each terminal on a very
>     fragile phenolic switch.
>
>       > The k3ng / arduino relay outputs are all dry contacts,
>
>     If building a K3NG style controller, one would be far better
>     served to find a 25.2V 6A (old filament) transformer and a
>     new 100-120uF capacitor to build a complete controller rather
>     than try to "automate" the old one.
>
>     73,
>
>          ... Joe, W4TV
>
>
>     On 2021-08-24 7:55 PM, Bill Pence wrote:
>      > Not sure I'd agree with that.
>      > I'd need to find the schematic, but I'd think the switches are
>      > configured as:
>      >
>      > Left a bit, brake engage, left more, rotated
>      >   slight release, stop rotate, hold bake
>      > Center off
>      > Right a bit, brake, right a bit more, rotate.
>      >   slight release, stop rotate, hold bake
>      >
>      > The k3ng / arduino relay outputs are all dry contacts,
>      > So connecting to the switch terminals should be straightfirward.
>      >
>      > If you want to send my links to schematics
>      > I can check and I might need good photos to show where the relay
>     wires
>      > connect.
>      > Would he happy to help.
>      >
>      >
>      > If course you can always buy a hy-gain dcu3 instead. I still like
>      > building stuff.
>      >
>      > On Tue, Aug 24, 2021, 2:36 PM Joe Subich, W4TV <lists@...
>     <mailto:lists@...>
>      > <mailto:lists@... <mailto:lists@...>>> wrote:
>      >
>      >
>      >     That single lever is a two section rotary switch - very difficult
>      >     to interface with any of the after market boards.  You will
>     probably
>      >     do best with a replacement controller.  If you choose to
>     build your
>      >     own from one of the K3NG articles, note that you will need to
>     find
>      >     a 24V AC @ 5-6A transformer (not particularly common these days)
>      >     and possibly the appropriate transformer/rectifier for the
>     direction
>      >     sensing circuit.
>      >
>      >     73,
>      >
>      >          ... Joe, W4TV
>      >
>      >
>      >     On 2021-08-24 12:39 PM, St. Cuda wrote:
>      >      > [Edited Message Follows]
>      >      >
>      >      > Brown with one lever, big meter that is 180-0-180 or S to
>     N to S.
>      >      >
>      >      >
>
>
>
>
>
>
>
>





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