[Elecraft] KAT-100 completed

[Tom Zeltwanger]

Don,

Thanks for the suggestions. At this point I have just the KAT100 in the EC2
enclosure. I do not currently have a PC connected, so it was the AUX connection
I was wondering about. I will clean up the ribbon cable and make sure it is not
near the KSB2 board. I need to do some more checking to see just how bad this
noise really is - it was not that strong but was noticable.

When I add the PC I probably will change the cable to something with shielded
twiested pairs.

73,

Tom KG3V



Quoting Don Wilhelm <w3fpr at earthlink.net>:

> Tom,
> 
> The suggestion from Jim Brown was to replace the cable to the computer 
> with twisted pair cable (CAT-5 will do, but shielded twisted pair is 
> better)  Both RXD and TXD should be paired with a conductor going to pin 
> 5 (Signal Ground).
> 
> If you do not have a computer connected, the computer cable (the RS-232 
> part of the AUX I/O) is NOT your problem.
> 
> The AUX I/O signals between the K2 and the KAT100 are usually not a problem.
> 
> Is the KPA100 mounted on the K2 or in the EC2 enclosure with the KAT100? 
>   If you have the KPA100 mounted on the K2, remove the right side panel 
> and dress (fold) the ribbon cable and the speaker cable up into the area 
> above the Control Board.  If left to its own resources, the signals on 
> the ribbon cable can couple into the KSB2 board.
> 
> 73,
> Don W3FPR
> 
> Tom Zeltwanger wrote:
> > Just completed and tested a KAT-100 in the EC2 enclosure. Like the K2 and
> the 
> > KPA-100, I turned it on, and everything worked fine. 
> > 
> > I think I may be seeing some digital noise getting into my K2 from the
> addition 
> > of the outboard tuner. I saw some discussion recently about noise from the
> RS-
> > 232 cable in the K2. Have others seen any problems with noise when adding
> the 
> > KAT-100? If so, any tips on minimizing or eliminating it?
> > 
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