[Moon] Encoder in Spid

Sat Jun 10 15:48:10 CEST 2017

It is still there in the EME2010 archive on the NTMS website 
http://www.ntms.org/eme/presentations/w5lua/DL1YMK_Presentation_final_2.pdf
73 Peter G3LTF

-----Original Message----- 
From: Michael Kohla
Sent: Saturday, June 10, 2017 11:30 AM
To: moon at moonbounce.info
Subject: Re: [Moon] Encoder in Spid

Look for a copy of my presentation some years ago held during EME
conference in Dallas, shows a mechanical solution. Have used it for many
years on all our DXpeditions. Think it is still available somewhere in the
net.

73, DL1YMK

Am 10.06.2017 12:26 schrieb <moon-request at moonbounce.info>:

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Today's Topics:

   1. Re: [ukmicrowaves] Fitting MAB25 type encoders to a Spid RAS
      (w2drz at ramcoinc.com)

----------------------------------------------------------------------

Message: 1
Date: Fri, 9 Jun 2017 09:01:55 -0400
From: <w2drz at ramcoinc.com>
To: "g4bao" <john at g4bao.com>,   <ukmicrowaves at yahoogroups.com>
Cc: microwave at lists.eclectechs.com, microwave valinet
        <microwave at lists.valinet.com>, moon at moonbounce.info, Moon-Net
        <moon-net at mailman.pe1itr.com>
Subject: Re: [Moon] [ukmicrowaves] Fitting MAB25 type encoders to a
        Spid RAS
Message-ID: <F023DC5FA472493981826414BF44C6D1 at workcad>
Content-Type: text/plain; format=flowed; charset="utf-8";
        reply-type=original

Hi all,

Look at the controller on web pages following .
This will use
1.)  pots,
2.)  z-index incremental encoders
3.)  absolute

http://www.w2drz.ramcoinc.com/

http://www.w2drz.ramcoinc.com/encoders.htm

pulse encoder "MUST" be quadrature data or will not count correctly. The
system is 100% error free, also capable of .001 degree accurate or better

This is partial explain how this system
  PULSE TYPE ENCODERS works.

z-index incremental encoders  quadrature data (100% error free)

http://www.w2drz.ramcoinc.com/rj45.htm#RS485%20Converters

hope this will enlighten those of on going error problem of "simple pulse
counting",
that type can not be fixed for the count error.

W2DRZ  Tom

----- Original Message -----
From: "g4bao" <john at g4bao.com>
To: <ukmicrowaves at yahoogroups.com>
Cc: <microwave at r on web page.

com>; <moon at moonbounce.info>; "Moon-Net" <moon-net at mailman.pe1itr.com>
Sent: Friday, June 09, 2017 5:59 AM
Subject: Re: [Moon] [ukmicrowaves] Fitting MAB25 type encoders to a Spid RAS

> Yes I've successfully completed  the mods and will write up the work in
> due
> course.
>
> 73 John
>
> On 9 Jun 2017 10:01, "Donald Hawbaker donaldhawbaker at yahoo.com
> [ukmicrowaves]" <ukmicrowaves at yahoogroups.com> wrote:
>
>
>
> Have you made any progress on this project?  I recently began using a DRO
> Machine readout for elevation.  It's the only way I can tell where my
> elevation is pointed.  After only a few minutes of bumping the elevation
> up
> and down, the SPID readout is off by 6 degrees.  Don't have a solution for
> azimuth.  I am experimenting with the higher bands now, so something has
> got to be done.  I guess I will first take a look at what is going on,
> what
> do the pulses look like, do I have excessive noise.  I have already moved
> the sense circuits to a seperate cable, but no help.  It still miscounts.
> Maybe look at shielded cable, but in such a system, it's hard to tell
> exactly where is ground.  73
>
>
> Sent from Yahoo Mail for iPad <https://yho.com/footer0>
>
>
> On Thursday, February 9, 2017, 12:58 PM, g4bao john at g4bao.com
> [ukmicrowaves] <ukmicrowaves at yahoogroups.com> wrote:
>
>
>
> Befefore I reinvent the wheel this spring and before I strip down my RAS,
> has anyone out there fitted absolute rotary encoders of the MAB 25 style
> to
> a SPID RAS and more importantly documented it?
> Also if anyone has stripped down and rebuilt a RAS I'd be interested in
> any
> tips, pitfalls and gotchas.
>
> I used to regularly strip down and rebuild a a Suzuki T500 charger engine
> in my youth,so I'm not scared to have a go  but I had a Haynes manual!
>
> You could save me a lot of time and headscratching.
>
> Also an exploded diagram of the rotator would be nice
> Answers on a postcard to.......
>
> 73
> John G4BAO
>
> __._,_.___
> ------------------------------
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