[Elecraft] GND Connection Between KX3 & KXPA100

[Don Wilhelm]

Paul,

It is wise to bond the KXPA100 to the station ground to combat noise and 
RFI.  In fact bonding everything in the station together with heavy wire 
or braid can cure many "strange happenings".

Other than that, you are correct that there is no need from a signalling 
connection standpoint to bond the KX3 to the KXPA100. Bonding the 
station equipment together and to a station ground point is to keep all 
the gear at the same potential and can assist with such things as 
extraneous noise pickup, stray RF and other electrical annoyances.

While on the subject of grounding, remember that NEC code requires that 
all ground rods and wires be connected back to the utility ground rod 
with heavy gauge wire (#6 or larger).  This is a safety consideration 
and has nothing to do with the proper functioning of your equipment.

73,
Don W3FPR

PS: Your first post is just fine.

On 11/25/2014 10:36 AM, Paul Bousquet wrote:
> Just wondering how important it is to have connect the GND terminals between the KX3 and the KXPA100 amp. The KXPA100 manual states the station ground should be connected to the KXPA100 GND thumbscrew. I was just wondering since there are many cables connected between the two if the additional GND connection is truly necessary.
>
> PS: This is my first attempt at communicating on the list and I just wanted to say how helpful it has been. I have spent many hours searching and getting information perviously posted.
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