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CX2SA  > SATDIG   16.06.18 16:30l 827 Lines 29048 Bytes #8 (0) @ WW
BID : AMSATBB13208
Subj: AMSAT-BB-digest V13 208
Path: ED1ZAC<ED1ZAC<CX2SA
Sent: 180616/1416Z @:CX2SA.SAL.URY.SOAM #:46104 [Salto] FBB7.00e $:AMSATBB13208
From: CX2SA@CX2SA.SAL.URY.SOAM
To  : SATDIG@WW

Today's Topics:

   1. Re: SATPC32 reinstall issue (Richard Tejera)
   2. Any plans for ISS participation during Field Day? (Greg D)
   3. Re: CAT TS-2000 (Erich Eichmann)
   4. DSLWP-B UHF Test Plan 16 Jun (???)
   5. Re: Another KR500 thread, maybe. (John)
   6. Re: CAT TS-2000 (Nick Pugh)
   7. Re: SATPC32 reinstall issue (Alan)
   8. Re: Any plans for ISS participation during Field Day? (Bob- W7LRD)
   9. FIELD DAY: WE7GV ON  FO-29 CW (2)
  10. Re: Any plans for ISS participation during Field Day? (Greg D)
  11. Re: Another KR500 thread, maybe. (Paul)
  12. Re: Another KR500 thread, maybe. (John)


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

Message: 1
Date: Thu, 14 Jun 2018 19:18:34 -0700
From: Richard Tejera <Saguaroastro@???.???>
To: 'AMSAT' <amsat-bb@?????.???>
Subject: Re: [amsat-bb] SATPC32 reinstall issue
Message-ID: <fpp6mesk2hsr8w8bjvp0kmnj.1529029114701@?????.???????.???>
Content-Type: text/plain; charset=utf-8

Anyone??? Still can't get Satpc32 to run properly

Rick Tejera K7TEJ
Saguaro Astronomy Club
www.SaguaroAstro.org
Thunderbird Amateur Radio Club
www.w7tbc.org

On June 11, 2018, at 18:50, Rick Tejera <SaguaroAstro@???.???> wrote:

All,



I recently  (today) had to reinstall SATPC32. I was getting the following
error on start up: Ungultiges argument zum Codeieren des Datms. If I clicked
OK the program would open, but with a blank window. Move on if I try to open
the Satellite menu, the following error popped up: E/A Fehler 6.



So Anyway, I save my data, uninstalled, and reloaded (Upgrading while I was
at it), restored my data. Same thing is happening.



Any Ideas? I'd  like to get things running by Field day.



TIA



Rick Tejera (K7TEJ)

Saguaro Astronomy Club

www.saguaroastro.org <http://www.saguaroastro.org>

Thunderbird Amateur Radio Club

www.W7TBC.org <http://www.W7TBC.org>



_______________________________________________
Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

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

Message: 2
Date: Thu, 14 Jun 2018 19:30:25 -0700
From: Greg D <ko6th.greg@?????.???>
To: Amsat BB <AMSAT-BB@?????.???>
Subject: [amsat-bb] Any plans for ISS participation during Field Day?
Message-ID: <e4c7af3b-158b-ca5f-7f80-bfd28980b334@?????.???>
Content-Type: text/plain; charset=UTF-8

Hi folks,

Anyone heard of any plans for the crew of the ISS to participate in
Field Day?  Or, are those glorious days over?

Greg  KO6TH



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

Message: 3
Date: Fri, 15 Jun 2018 07:35:20 +0200
From: Erich Eichmann <erich.eichmann@????????.??>
To: "David Maciel (XE3DX)" <david.xe3dx@?????.???>, AMSAT-BB@?????.???
Subject: Re: [amsat-bb] CAT TS-2000
Message-ID: <708653f0-230c-e659-59e5-30fb329c0131@????????.??>
Content-Type: text/plain; charset=windows-1252; format=flowed

Dave,
with the TS-2000 it is necessary to check the option 'RTS +12V'.
Cable: Standard RS-232 straight forward (no null modem!) with DB-9
connectors (both female).

73s, Erich, DK1TB

Am 14.06.2018 um 16:29 schrieb David Maciel (XE3DX):
> hi guys, can someone send the connection for the TS-2000 CAT cable?
>
> Dave
> XE3DX



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

Message: 4
Date: Fri, 15 Jun 2018 15:42:12 +0800 (CST)
From: ??? <wmc_jx@???.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: [amsat-bb] DSLWP-B UHF Test Plan 16 Jun
Message-ID: <4369229a.9249.1640265054d.Coremail.wmc_jx@???.???>
Content-Type: text/plain; charset=GBK

Hi OMs,


The following tests for DSLWP-B UHF are planned:


16 Jun 09:00 to 16 Jun 11:00
16 Jun 22:00 to 17 Jun 00:00



Tracking file updates can be found on: https://github.com/bg2bhc/dslwp_dev
or http://lilacsat.hit.edu.cn/tle/program_tracking_dslwp-b.txt


Updated version (20180530) of Live CD:
https://drive.google.com/file/d/1Ptga7XfgQ--qsnD4QhpNiRRUIW3c626L/view?usp=sha
ring


VY TN & 73!


Wei BG2BHC







--

WEI Mingchuan


Research Center of Satellite Technology
Harbin Institute of Technology
mobile: +86-189-4501-5242
e-mail: wmc_jx@???.???? bg2bhc@?????.???












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

Message: 5
Date: Fri, 15 Jun 2018 09:13:08 +0100
From: "John" <john@?????.???.??>
To: "'Paul'" <paul@????.???.??>,	<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Another KR500 thread, maybe.
Message-ID: <014801d40480$b2806170$17812450$@?????.???.??>
Content-Type: text/plain;	charset="us-ascii"

Paul,

It's a Model B KR500 I would say. The very last version of the KR5600 (the
KR5600B set) had limit switches and capacitors inside the motors.

As for how to proceed, you have two options. Firstly pull the limit switch
mechanism out and rely on the controller's start capacitor, or secondly pull
the start capacitor from the controller and use the rotor limit switches and
capacitor. As far as I can tell from the in-depth dismantling I've done of a
couple of these, either should work, but having both would effectively
render the limit switches redundant, and probably play some kind of havoc
further down the line.

What I'd recommend personally is that you start by checking the wiring
config on the back of the screw block - this will have an effect on what you
do later. There was some weird wiring in one of the rotor units I bought,
and it ended up with pins being shorted together inside the connector block
and made everything weird. I made the decision with that one to return it to
'A' spec as I couldn't be sure what else had been done. If yours is similar
that's the approach I would take.

If, however, the inside wiring on the motor unit is sensible and sane, and
matches spec, then I'd probably go for keeping the limit switches installed,
as otherwise your only limiting is a mechanical stop, and if you hit that
and don't realise, but keep sending current up the cable, you'll inevitably
burn out your motor windings after a while. Not such a fun job to fix
(dismantling the motor housing is at least an hour's work on its own),
although easy enough to do with patience.

Feel free to ping me off list if you want to chat about it further!

73, and a firm left handshake,
John (2E0XLX)

-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Paul
Sent: 14 June 2018 18:18
To: amsat-bb@?????.???
Subject: [amsat-bb] Another KR500 thread, maybe.

Hi all
I recently won a Kenpro KR500 rotor on Ebay for the princely sum of a quid.
The alleged history was it was purchased, had antennas attached but was
never wired or used and this I can believe because the connector block looks
untouched. It was however left on its side in the garden so looks pristine
but has suffered water ingress. I started to strip it down today and of
course the eight M6 Phillips heads put up quite a fight but I attacked it
with fire and it is now apart.

Having opened it up I'm now slightly confused as to what model rotor I
actually have. It has the eight screw terminal block, the casing is stamped
Kenpro but internally it has the limit switches and a capacitor.

The controller I intend using is an old Kenpro KR400 model and I assume has
the 70uF cap across the switches. Do I leave this in place to use it with my
rotor or should I remove it, or remove the cap in the rotor?

Paul G7PUV
Sussex Coast. JO00
_______________________________________________
Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb



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

Message: 6
Date: Fri, 15 Jun 2018 03:45:54 -0500
From: "Nick Pugh" <quadpugh@?????????.???>
To: "'Paul Andrews'" <w2hro.fn20@?????.???>,	<david.xe3dx@?????.???>
Cc: 'amsat-bb' <amsat-bb@?????.???>
Subject: Re: [amsat-bb] CAT TS-2000
Message-ID: <00e601d40485$461093c0$d231bb40$@?????????.???>
Content-Type: text/plain;	charset="iso-8859-1"

My recolecation it needs a cross over cable with hardware hand shake








nick

Cell????? 337 258 2527
?
Helping UL become a world Class Engineering ?and Educational School
Disagree I Learn


-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Paul Andrews
Sent: Thursday, June 14, 2018 3:02 PM
To: david.xe3dx@?????.???
Cc: amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] CAT TS-2000

The CAT connector on the TS-2000 is standard RS-232.

The RS-232 (CAT) pinout can be easily found on the Internet with a Google
search.
On Thu, Jun 14, 2018 at 10:31 AM David Maciel (XE3DX)
<david.xe3dx@?????.???> wrote:
>
> hi guys, can someone send the connection for the TS-2000 CAT cable?
>
> Dave
> XE3DX
> --
> Saludos
>
> David Maciel
> XE3DX
>
> Enviado desde mi IPHONE
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect the
official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb



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

Message: 7
Date: Fri, 15 Jun 2018 07:04:39 -0500
From: "Alan" <wa4sca@?????.???>
To: "'Richard Tejera'" <Saguaroastro@???.???>, "'AMSAT'"
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] SATPC32 reinstall issue
Message-ID: <000a01d404a1$0a12d880$1e388980$@?????.???>
Content-Type: text/plain;	charset="us-ascii"

Try running the new version without reinstalling your old data.  If that
works, you can incrementally restore the old data manually and find the
problem.

73,

Alan
WA4SCA


<-----Original Message-----
<From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of
<Richard Tejera
<Sent: Thursday, June 14, 2018 21:19 PM
<To: 'AMSAT' <amsat-bb@?????.???>
<Subject: Re: [amsat-bb] SATPC32 reinstall issue
<
<Anyone??? Still can't get Satpc32 to run properly
<
<Rick Tejera K7TEJ
<Saguaro Astronomy Club
<www.SaguaroAstro.org
<Thunderbird Amateur Radio Club
<www.w7tbc.org
<
<On June 11, 2018, at 18:50, Rick Tejera <SaguaroAstro@???.???> wrote:
<
<All,
<
<
<
<I recently  (today) had to reinstall SATPC32. I was getting the following
<error on start up: Ungultiges argument zum Codeieren des Datms. If I
clicked
<OK the program would open, but with a blank window. Move on if I try to
<open
<the Satellite menu, the following error popped up: E/A Fehler 6.
<
<
<
<So Anyway, I save my data, uninstalled, and reloaded (Upgrading while I was
<at it), restored my data. Same thing is happening.
<
<
<
<Any Ideas? I'd  like to get things running by Field day.
<
<
<
<TIA
<
<
<
<Rick Tejera (K7TEJ)
<
<Saguaro Astronomy Club
<
<www.saguaroastro.org <http://www.saguaroastro.org>
<
<Thunderbird Amateur Radio Club
<
<www.W7TBC.org <http://www.W7TBC.org>
<
<
<
<_______________________________________________
<Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
<to all interested persons worldwide without requiring membership. Opinions
<expressed
<are solely those of the author, and do not reflect the official views of
AMSAT-
<NA.
<Not an AMSAT-NA member? Join now to support the amateur satellite
<program!
<Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
<_______________________________________________
<Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
<to all interested persons worldwide without requiring membership. Opinions
<expressed
<are solely those of the author, and do not reflect the official views of
AMSAT-
<NA.
<Not an AMSAT-NA member? Join now to support the amateur satellite
<program!
<Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb



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

Message: 8
Date: Fri, 15 Jun 2018 09:09:30 -0700 (PDT)
From: Bob- W7LRD <w7lrd@???????.???>
To: Amsat BB <AMSAT-BB@?????.???>, Greg D <ko6th.greg@?????.???>
Subject: Re: [amsat-bb] Any plans for ISS participation during Field
Day?
Message-ID: <1847259305.79085.1529078971072@???????.???????.???>
Content-Type: text/plain; charset=UTF-8

Hi folks-Everyone on the ISS has at least a tech license.  It would
interesting if they would try for WAS, VUCC, DXCC or whatever just for fun.
73 Bob W7LRD

> On June 14, 2018 at 7:30 PM Greg D <ko6th.greg@?????.???> wrote:
>
>
> Hi folks,
>
> Anyone heard of any plans for the crew of the ISS to participate in
> Field Day?  Or, are those glorious days over?
>
> Greg  KO6TH
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb


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

Message: 9
Date: Fri, 15 Jun 2018 12:27:58 -0400
From: 2 <rsoifer1@???.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] FIELD DAY: WE7GV ON  FO-29 CW
Message-ID: <16404466059-c8a-1b4c1@?????????????.???.???????.???>
Content-Type: text/plain; charset=utf-8

Again this year, the Green Valley (AZ) ARC, WE7GV, will be on  FO-29 and
poaaibly other linear transponder sats.  CW only.  No phone or digi.  Look
for us.  An easy 100 ARRL points.


73 Ray W2RS


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

Message: 10
Date: Fri, 15 Jun 2018 11:26:19 -0700
From: Greg D <ko6th.greg@?????.???>
To: Bob- W7LRD <w7lrd@???????.???>, Amsat BB <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Any plans for ISS participation during Field
Day?
Message-ID: <99a8642a-2e24-04ac-a10c-d949ccfc4ff9@?????.???>
Content-Type: text/plain; charset=UTF-8

My recollection is that just participating in Field Day from the ISS has
been enjoyable for those who did so.  They don't need to go for an award
to have fun, but also likely don't have the time.  I think it was
astronaut Susan Helms who stirred up quite a discussion by asking what
their designation would be.  Home power, yes I suppose, but also solar
powered, battery, etc.  My log (2001) says "1A Battery on ISS", and it
was clear that she had a blast.

Scanning back in my logs, it looks like the last time I made a contact
with the ISS on FD was in 2014, so not all that long ago.  They were
running "2A DX".

Greg  KO6TH


Bob- W7LRD wrote:
> Hi folks-Everyone on the ISS has at least a tech license.  It would
interesting if they would try for WAS, VUCC, DXCC or whatever just for fun.
> 73 Bob W7LRD
>
>> On June 14, 2018 at 7:30 PM Greg D <ko6th.greg@?????.???> wrote:
>>
>>
>> Hi folks,
>>
>> Anyone heard of any plans for the crew of the ISS to participate in
>> Field Day?  Or, are those glorious days over?
>>
>> Greg  KO6TH
>>
>> _______________________________________________
>> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
Opinions expressed
>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb



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

Message: 11
Date: Sat, 16 Jun 2018 09:40:47 +0100
From: Paul <paul@????.???.??>
To: John <john@?????.???.??>, amsat-bb@?????.???
Subject: Re: [amsat-bb] Another KR500 thread, maybe.
Message-ID: <aff847a0-7e66-d6c2-e167-a7bd1981d2a0@????.???.??>
Content-Type: text/plain; charset=utf-8; format=flowed

Hi John,

Thanks for your lengthy reply, I really appreciate it. Just to clarify
one thing you think this is a late model Kenpro due to it having the
switches and cap inside the casing attached above the positioning pot?

I tested the motor last night using the KR400 controller, wiring seems
standard on pins 4,5 and 6 so I gave it a couple of briefs bursts to see
if it turned, it didn't! Well not initially then all appeared OK, on
closer inspection I discovered that the motor itself has some form of
brake or stop inside. While it's free to be turned manually in the same
direction it was last powered it will not turn in the opposite direction
until power is applied to move it that way. At first I thought it was
jammed or broken but it appears to be normal operation as the rotation
is quite free with no nasty feeling rough spots.

The limit switches surprised me as well. I come from a satellite
background where I'm used to a limit switch killing power to an
actuator, if I press one of these it switches the motor into the
opposite direction, is that right?

Now I know the motor is free to move I've purchased new bearings and
will source some suitable grease, primer and paint. The case has become
quite pitted inside where the water was laying but it's now all clean
after wire brushing and rubbing down. Externally it's in very good
condition even where I hit each point with the gas gun to get the bolts
out. It goes without saying they'll all be replaced with stainless
socket head bolts.

73
Paul
G7PUV


On 15/06/2018 09:13, John wrote:
> Paul,
>
> It's a Model B KR500 I would say. The very last version of the KR5600 (the
> KR5600B set) had limit switches and capacitors inside the motors.
>
> As for how to proceed, you have two options. Firstly pull the limit switch
> mechanism out and rely on the controller's start capacitor, or secondly pull
> the start capacitor from the controller and use the rotor limit switches and
> capacitor. As far as I can tell from the in-depth dismantling I've done of a
> couple of these, either should work, but having both would effectively
> render the limit switches redundant, and probably play some kind of havoc
> further down the line.
>
> What I'd recommend personally is that you start by checking the wiring
> config on the back of the screw block - this will have an effect on what you
> do later. There was some weird wiring in one of the rotor units I bought,
> and it ended up with pins being shorted together inside the connector block
> and made everything weird. I made the decision with that one to return it to
> 'A' spec as I couldn't be sure what else had been done. If yours is similar
> that's the approach I would take.
>
> If, however, the inside wiring on the motor unit is sensible and sane, and
> matches spec, then I'd probably go for keeping the limit switches installed,
> as otherwise your only limiting is a mechanical stop, and if you hit that
> and don't realise, but keep sending current up the cable, you'll inevitably
> burn out your motor windings after a while. Not such a fun job to fix
> (dismantling the motor housing is at least an hour's work on its own),
> although easy enough to do with patience.
>
> Feel free to ping me off list if you want to chat about it further!
>
> 73, and a firm left handshake,
> John (2E0XLX)
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Paul
> Sent: 14 June 2018 18:18
> To: amsat-bb@?????.???
> Subject: [amsat-bb] Another KR500 thread, maybe.
>
> Hi all
> I recently won a Kenpro KR500 rotor on Ebay for the princely sum of a quid.
> The alleged history was it was purchased, had antennas attached but was
> never wired or used and this I can believe because the connector block looks
> untouched. It was however left on its side in the garden so looks pristine
> but has suffered water ingress. I started to strip it down today and of
> course the eight M6 Phillips heads put up quite a fight but I attacked it
> with fire and it is now apart.
>
> Having opened it up I'm now slightly confused as to what model rotor I
> actually have. It has the eight screw terminal block, the casing is stamped
> Kenpro but internally it has the limit switches and a capacitor.
>
> The controller I intend using is an old Kenpro KR400 model and I assume has
> the 70uF cap across the switches. Do I leave this in place to use it with my
> rotor or should I remove it, or remove the cap in the rotor?
>
> Paul G7PUV
> Sussex Coast. JO00
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available to all
> interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb


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

Message: 12
Date: Sat, 16 Jun 2018 15:06:30 +0100
From: "John" <john@?????.???.??>
To: "'Paul'" <paul@????.???.??>,	<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Another KR500 thread, maybe.
Message-ID: <01e201d4057b$39f152e0$add3f8a0$@?????.???.??>
Content-Type: text/plain;	charset="utf-8"

Hi Paul,

Yes, I'm 99% sure it's the elevation unit side of a late model KR5600B. I
would not recommend running it with both capacitors inline, as the
capacitors are effectively used as a timing device to ensure the motor spins
in the correct direction. The capacitance delays the current hitting the
second set of coils long enough to make the motor spin which allows it to
drive the rest of the system. Sending current up both sides at once (due to
your capacitor in the controller) will confuse things somewhat

The motor auto-reversing is possibly a symptom of this extra capacitor in
the wrong place, though since I had weird wiring in my rotor unit which I
needed to pull out, I can't verify that from experience. Pull the capacitor
wires from your controller and see if you get the same behaviour or not!

The disc brake is between the gear on the motor shaft, and the motor
housing, and is usually a cork disc. It adds enough friction to 'brake' the
motor, but when you energise the coils, the motor shaft physically lifts
away from the brake disc. You'll see, if you give the shaft a gentle pull,
that it almost lifts away from the motor unit - this is the brake release
mechanism.

The main thing to remember is that you're working with AC motors here, which
run at around 26-28V.

As an aside, if you don't have the manual for it, it's worth finding one - I
probably have a digital copy somewhere I can send you if needed. The manual
has a full and complete wiring diagram for both sides of the system in them.

73,

John (XLX)

-----Original Message-----
From: Paul <paul@????.???.??>
Sent: 16 June 2018 09:41
To: John <john@?????.???.??>; amsat-bb@?????.???
Subject: Re: [amsat-bb] Another KR500 thread, maybe.

Hi John,

Thanks for your lengthy reply, I really appreciate it. Just to clarify one
thing you think this is a late model Kenpro due to it having the switches
and cap inside the casing attached above the positioning pot?

I tested the motor last night using the KR400 controller, wiring seems
standard on pins 4,5 and 6 so I gave it a couple of briefs bursts to see if
it turned, it didn't! Well not initially then all appeared OK, on closer
inspection I discovered that the motor itself has some form of brake or stop
inside. While it's free to be turned manually in the same direction it was
last powered it will not turn in the opposite direction until power is
applied to move it that way. At first I thought it was jammed or broken but
it appears to be normal operation as the rotation is quite free with no
nasty feeling rough spots.

The limit switches surprised me as well. I come from a satellite background
where I'm used to a limit switch killing power to an actuator, if I press
one of these it switches the motor into the opposite direction, is that right?

Now I know the motor is free to move I've purchased new bearings and will
source some suitable grease, primer and paint. The case has become quite
pitted inside where the water was laying but it's now all clean after wire
brushing and rubbing down. Externally it's in very good condition even where
I hit each point with the gas gun to get the bolts out. It goes without
saying they'll all be replaced with stainless socket head bolts.

73
Paul
G7PUV


On 15/06/2018 09:13, John wrote:
> Paul,
>
> It's a Model B KR500 I would say. The very last version of the KR5600
> (the KR5600B set) had limit switches and capacitors inside the motors.
>
> As for how to proceed, you have two options. Firstly pull the limit
> switch mechanism out and rely on the controller's start capacitor, or
> secondly pull the start capacitor from the controller and use the
> rotor limit switches and capacitor. As far as I can tell from the
> in-depth dismantling I've done of a couple of these, either should
> work, but having both would effectively render the limit switches
> redundant, and probably play some kind of havoc further down the line.
>
> What I'd recommend personally is that you start by checking the wiring
> config on the back of the screw block - this will have an effect on
> what you do later. There was some weird wiring in one of the rotor
> units I bought, and it ended up with pins being shorted together
> inside the connector block and made everything weird. I made the
> decision with that one to return it to 'A' spec as I couldn't be sure
> what else had been done. If yours is similar that's the approach I would
take.
>
> If, however, the inside wiring on the motor unit is sensible and sane,
> and matches spec, then I'd probably go for keeping the limit switches
> installed, as otherwise your only limiting is a mechanical stop, and
> if you hit that and don't realise, but keep sending current up the
> cable, you'll inevitably burn out your motor windings after a while.
> Not such a fun job to fix (dismantling the motor housing is at least
> an hour's work on its own), although easy enough to do with patience.
>
> Feel free to ping me off list if you want to chat about it further!
>
> 73, and a firm left handshake,
> John (2E0XLX)
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Paul
> Sent: 14 June 2018 18:18
> To: amsat-bb@?????.???
> Subject: [amsat-bb] Another KR500 thread, maybe.
>
> Hi all
> I recently won a Kenpro KR500 rotor on Ebay for the princely sum of a quid.
> The alleged history was it was purchased, had antennas attached but
> was never wired or used and this I can believe because the connector
> block looks untouched. It was however left on its side in the garden
> so looks pristine but has suffered water ingress. I started to strip
> it down today and of course the eight M6 Phillips heads put up quite a
> fight but I attacked it with fire and it is now apart.
>
> Having opened it up I'm now slightly confused as to what model rotor I
> actually have. It has the eight screw terminal block, the casing is
> stamped Kenpro but internally it has the limit switches and a capacitor.
>
> The controller I intend using is an old Kenpro KR400 model and I
> assume has the 70uF cap across the switches. Do I leave this in place
> to use it with my rotor or should I remove it, or remove the cap in the
rotor?
>
> Paul G7PUV
> Sussex Coast. JO00
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
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Subject: Digest Footer

_______________________________________________
Sent via amsat-bb@?????.???.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership.  Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb

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End of AMSAT-BB Digest, Vol 13, Issue 208
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