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Re: Fw: Rotator/Elevator controled using LAN?

Hello Gary!

...except _all_ the software I've seen using FodTrack directly accesses the
port, and so will only work with a 'physical' standard port which is
directly on the PC bus. FodTrack itself relies on the correct twiddling of
the right bits (status and data) on the port, which often isn't an available
function on the virtual LPT ports you refer to.

Indeed I've had to modify some of the software so I can use it under NT/W2K
which objects to some direct port I/O.

I've been in the market for just this type of unit in the past, but have
been put off in the past by the prices - what sort of prices and what are
the models that you're referring to?

73 Howard G6LVB

----- Original Message -----
From: "Gary "Joe" Mayfield" <gary_mayfield@hotmail.com>
To: "Howard Long" <howard@howardlong.com>; "Murray Peterson VK2KGM"
<vk2kgm@ihug.com.au>; "AMSAT-BB" <amsat-bb@AMSAT.Org>
Sent: Thursday, January 18, 2001 1:54 AM
Subject: Re: [amsat-bb] Fw: Rotator/Elevator controled using LAN?

There are several boxes floating around that provide parrallel and/or serial
ports via a LAN.  I am using one as switch and firewall in my home.  I would
assume hooking a FODtrack up to this shared port would be fairly straight


----- Original Message -----
From: "Howard Long" <howard@howardlong.com>
To: "Murray Peterson VK2KGM" <vk2kgm@ihug.com.au>; "AMSAT-BB"
Sent: Wednesday, January 17, 2001 6:33 PM
Subject: RE: [amsat-bb] Fw: Rotator/Elevator controled using LAN?

> Hi Murray
> I have thought about this to some extent over the past few months - after
> all you can buy cameras which just plug into a LAN.
> You can get enough on a PIC chip to run IP over a serial PPP connection.
> It's not Ethernet though.
> FWIW I can control the whole of my station from the internet...
> This includes antenna positions, antenna polarization, antenna selection,
> preamps, audio and video feeds, and radio frequency. I run a Media Encoder
> server for the audio/video and either PC Anywhere or Citrix for the
> if the automatic Wisp/WispDDE antenna & frequency tracking is not quite
> right.
> Indeed during the first few weeks of AO-40 when the 2m beacon was
> telemetry that's what I used most of the time. Left a laptop at work in
> corner permanently monitoring the whole thing, so if I wasn't too far away
> from the laptop I'd know straight away if there was something that needed
> attention.
> But none of this is exactly what you want, even though the end result had
> the desired function. A much neater solution is exactly what you suggest -
> albeit with a load of computer hash at your antenna!
> A less ambitious solution I've been toying with would be something like
> ICOM CI-V interface to the rotator and any other mast (or shack!) mounted
> equipment (CI-V is a very low bandwidth CSMA/CD bus), and then supply the
> interface at your computer. Indeed I run something close to this already
> order to control my antenna selection and polarizations, and the preamps,
> but it's only unidirectional.
> Maybe someone on the bb can give us a pointer to a three pin ethernet
> interface chip and then we really can have Internet enabled preamps,
> rotators and toasters. It's gonna happen one day real soon... I can
> Telnet into my house from my cellular phone and switch the lights on and
> off, and put the coffee on (if I remembered to re-fill the filter that
> is...).
> 73 Howard G6LVB
> -----Original Message-----
> From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
> Behalf Of Murray Peterson VK2KGM
> Sent: 17 January 2001 22:25
> Subject: [amsat-bb] Fw: Rotator/Elevator controled using LAN?
> ----- Original Message -----
> From: Murray Peterson VK2KGM
> Sent: Wednesday, January 17, 2001 3:44 PM
> Subject: Rotator/Elevator controled using LAN?
>     Has anyone tried or succeeded contoling a rotator/elevator unit by
> connect it to a Local Area Network and asigning it an IP address? I have
> some 10 Base 2 (coaxial) ethernet cards and I am thinking whether they
> be a great way of controling a rotator/elevator unit via a single length
> RG58. It might be a great way of being able control the rotator/elevator
> unit from several different PCs or at least have several PCs able to read
> the position information.
>     A standard LAN connection might be a good standard feature for
> rotator/elevator manufactures to include in their units.
> What do you think?
> regards,
> Murray Peterson
> Sydney, NSW,
> Australia
> ----
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