[GreenKeys] iron horse in action

[Maurie Challinor]

This brings back memories. Up till 1953 here in N.Z. we had a similar 
tape punching keyboard (Murray system). The keyboard had no anti-clash 
device which meant that if a letter key was not hit cleanly and firmly 
an incorrect signal could be punched on the tape. A good operator 
(perforator) had no trouble keeping the transmitter fed. Transmission 
speed was about 44 wpm.

Maurie Challinor


On 24/12/2014 4:17 p.m., greenkeys-request at mailman.qth.net wrote:
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> Today's Topics:
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>     1. Re: MCT S-100 Serial board - Ever seen one? CL and/or RS-232?
>        (Jeffrey D Angus)
>     2. Re: The Iron Horse in action... (Jim Haynes)
>     3. Re: Ordnance Grease LAS (drlegendre .)
>     4. Re: MCT S-100 Serial board - Ever seen one? CL and/or	RS-232?
>        (drlegendre .)
>     5. Re: MCT S-100 Serial board - Ever seen one? CL and/or	RS-232?
>        (drlegendre .)
>     6. Re: Ordnance Grease LAS (scottpastor)
>     7. Re: Ordnance Grease LAS (Jones, Douglas W)
>     8. Ordnance grease (CL in NC via GreenKeys)
>     9. Re: From Grease to.... (Lee Mushel)
>    10. Re: From Grease to.... (Lee Mushel)
>    11. Re: Ordnance Grease LAS (drlegendre .)
>    12. Re: Ordnance Grease LAS (Roy Morgan)
>    13. Re: Ordnance Grease LAS (Richard Knoppow)
>    14. Re: Ordnance Grease LAS (tony.podrasky)
>    15. Re: Ordnance Grease LAS (Jeffrey D Angus)
>    16. Re: Ordnance Grease LAS (Richard Knoppow)
>    17. Re: Ordnance Grease LAS (Dave Horsfall)
>    18. Re: The Iron Horse in action... (Duncan Brown)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 22 Dec 2014 19:45:59 -0600
> From: Jeffrey D Angus<jdangus at att.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] MCT S-100 Serial board - Ever seen one? CL
> 	and/or RS-232?
> Message-ID:<5498C957.7090409 at att.net>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> On 12/22/2014 6:34 PM, drlegendre . wrote:
>> Does anyone have experience with this board?
> No. However, two things, first off, ALL of those little tantalum capacitors
> are suspect and ticking time bombs. Replace them. Looks like a couple
> already went bad and tried to fry the 4 resistors in the corner.
>


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