[Elecraft] Elecraft K3s, etc. bonding

[Dave Cole]

Hi Randy,

Thanks for the info!  Upon reflection, I will be following Jim's slide 105.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 4/23/20 6:11 AM, Randy Farmer wrote:
> Thanks for the info, Dave. Your approach works fine IF you're using the 
> ground bar ground technique. I'm attempting to follow Jim's advice (see 
> slides 91 through 113 in his Grounding and Audio presentation referenced 
> below). For this, you need bond wires between the individual boxes in 
> the station. BTW, I have found that 1/2" braid can be rolled up and 
> crimped in 45A Power Pole connectors.
> 
> 73...
> Randy, W8FN
> 
> On 4/23/2020 8:53 AM, Dave Cole wrote:
>> Hi Randy,
>>
>> I rebuilt my shack six years ago, and documented a bit of that. One 
>> part was connecting grounds to the back of the rigs.  See:
>>
>> https://www.nk7z.net/rebuilding-the-shack/
>>
>> Look at a few of the photos.  One shows a large copper ring terminal, 
>> which will fit a K3, etc., and how it was connected to 3/4 inch braid.
>>
>> Basically I folded the braid, inserted it and some solder cut to 
>> length into the ring terminal solder bucket.  I then held it in place 
>> with a set of pliers, and hit the ring terminal with a Burns-O-Matic 
>> torch. You can see the jig I had set up on the top of the glass jar.
>>
>> Yes...  I know grounds are not supposed to be soldered...
>>
>> I am sure there are better ways...  This is just what I did.
>>
>> 73, and thanks,
>> Dave (NK7Z)
>> https://www.nk7z.net
>> ARRL Volunteer Examiner
>> ARRL Technical Specialist
>> ARRL Asst. Director, NW Division, Technical Resources
>>
>> On 4/23/20 5:37 AM, Randy Farmer wrote:
>>> I'm currently in the process of wiring up my new station and I happen 
>>> to be working on the equipment bonding phase for my pair of K3s SO2R 
>>> station. I'm doing my best to get decent connectivity between the 
>>> station components, but can't really figure out how to terminate 
>>> large (AWG 10) wire to the teeny 6-32 ground screws on the back of 
>>> the K3, especially since something like six bond wires need to be 
>>> attached to the transceivers. There appear to be no available ring 
>>> terminals that will fit these small screws; the smallest I can find 
>>> are for #10 studs. Even by using a threaded standoff installed in the 
>>> K3 ground nut and a longer screw to stand the rings off, stacking a 
>>> bunch of these huge terminals is extremely difficult. Providing some 
>>> means of reasonably quick disconnect for servicing purposes is 
>>> equally difficult. Exactly how can I go about connecting big wires to 
>>> little ground posts?
>>>
>>> 73...
>>> Randy, W8FN
>>>
>>> On 4/20/2020 10:22 PM, Jim Brown wrote:
>>>> On 4/20/2020 6:08 PM, Tom Norris NB5Q wrote:
>>>>> I'm asking what method and
>>>>> attachment point, to each piece of equipment, you experienced 
>>>>> K-Line owners
>>>>> use to bond the K3s, P3, SP3, etc. and then on to the station ground.
>>>>
>>>> I use wires soldered to screw lugs, making sure that the attachment 
>>>> point is not insulated from the chassis by paint. Some of the 
>>>> equipment has a dedicated grounding screw. Shells of DB connectors 
>>>> SHOULD be bonded to the equipment chassis, but not always -- some 
>>>> mfrs screw up and fail to do that.
>>>>
>>>> Some of my equipment goes out in the field from time to time, so I 
>>>> use single circuit Power Pole connectors to make that easy. I'll use 
>>>> 2-6" between the lug and the PowerPole, then make a loop soldered to 
>>>> a PowerPoles that connect to each piece of gear in the string (so 
>>>> each connector has two wires). There are lots of suitable variations 
>>>> on this, depending on how the shack is laid out.
>>>>
>>>> These are the slides for my talks on station power, grounding, and 
>>>> bonding. http://k9yc.com/GroundingAndAudio.pdf
>>>>
>>>> 73, Jim K9YC
>>>> ______________________________________________________________
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>>>
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>> ______________________________________________________________
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> 
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