[Elecraft] MicroHam microkeyer

[Jim Byers]

To all

This URL will take you to the schematic of the cable set used with  
the Microham Microkeyer

http://www.microham.com/Downloads/DB37-EL-K2.pdf

If you look in the accessories section you can see the schematics of  
all the cables

At present the US supplier is back ordered on the K2 cables until Nov  
4th. If you wish to roll your own the online store does allow for a  
price reduction if you do not order a cable.

I have no connection to Microham

73
Jim
VE3TTN

On Oct 23, 2005, at 14:34, Don Wilhelm wrote:

> Stewart and all,
>
> That is precisely why I hesitate to refer to the DE9 connector on  
> the KIO2
> and the KPA100 as an 'RS232' connector.
>
> To those not yet informed, please be aware that connecting a  
> standard RS232
> serial cable to this K2 connector (and the other end to a computer)  
> will
> most certainly do harm to your K2.  This connector carries K2 control
> signals (non-RS232) as well as the RS232 signals (only TXD and RXD and
> Signal Ground are RS232 standard levels).  The connector itself  
> does not
> follow the RS232 standard - perhaps it would have been better  
> implemented as
> a DIN connector, but it is too late for that now.
>
> There are only 3 pins (OK, 4 if you include frame ground on pin 1)  
> that are
> RS232 signals.  The rest of the pins should not be subjected to the  
> up-to
> plus/minus 25 volts levels that may be present should the other end  
> of the
> cable be connected to a device which presents  standard RS232 signals.
>
> For my own K2, I have put a plug into pin 4 and broken off pin 4 of  
> the
> mating cable, so only that special cable can be plugged into the K2 to
> prevent an accident that can happen to the best of us.
>
> 73,
> Don W3FPR
>
>
>> -----Original Message-----
>>
>> It seems to have the ability to send commands to the K2 via the
>> serial port.
>> What I meant to have said, was that Elecraft have some fairly non
>> standard usage
>> of the pins on a RS232 D type.
>>
>> 73
>> Stewart G3RXQ
>>
>>