[Elecraft] Elecraft] RFI on K3s

[brian]

Perhaps rightly so, all this is focusing on RFI getting into the radio 
via the antenna.

Nothing has been mentioned on what had been standard practice years ago.

That is installing a good RFI filter on the mains right at the station.
These filter can knock things down 40 dB in both directions.

73 de Brian/K3KO


On 6/21/2016 15:08 PM, Guy Olinger K2AV wrote:
> If one has a source of the red/black #10 zip cord (seemingly very common in
> the US), then simply zip it apart, and then twist it yourself. Then you
> still have the advantage of the color-coded wires.
>
> The #10 stuff I've got is 2 round insulated #10 medium stranded wires, one
> red insulated, one black, tacked together, which separates very easily to a
> pair of round wires, ideal for twisting.
>
> The better deal is to keep all leads as short as possible.
>
> 73, Guy K2AV
>
> On Tue, Jun 21, 2016 at 10:48 AM, Walter Underwood <wunder at wunderwood.org>
> wrote:
>
>> Belen appears to make a 10 AWG twisted pair cable, but I only see it
>> available in 500 foot spools. Search for "Belden 8678”.
>>
>>
>> https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
>> <
>> https://www.anixter.com/en_us/products/5T00UP-008500/BELDEN/Multi-Pair-Multi-Conductor-Cable/p/B5T00UP-500
>>>
>> http://www.alliedelec.com/belden-8678-060500/70004200/ <
>> http://www.alliedelec.com/belden-8678-060500/70004200/>
>>
>> http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy%2FMvzJLBfKAfoA%3D%3D
>> <
>> http://www.mouser.com/ProductDetail/Belden-Wire-Cable/8678-060500/?qs=GjJS1gozy/MvzJLBfKAfoA==
>>>
>>
>> Might be worth organizing a group or club purchase. Or maybe PowerWerx
>> could carry it.
>>
>> wunder
>> K6WRU
>> Walter Underwood
>> CM87wj
>> http://observer.wunderwood.org/ (my blog)
>>
>>> On Jun 20, 2016, at 11:19 PM, Vic Rosenthal 4X6GP <k2vco.vic at gmail.com>
>> wrote:
>>>
>>> No, unfortunately.
>>> There is a large Ace Hardware near me and places to buy building
>> materials, but it's the not the same.
>>>
>>> 73,
>>> Vic, 4X6GP
>>> Rehovot, Israel
>>> Formerly K2VCO
>>> http://www.qsl.net/k2vco/
>>>
>>> On 21 Jun 2016 08:19, Fred C. Jensen wrote:
>>>> Home Depot is in Israel too?
>>>>
>>>> Fred K6DGW
>>>>
>>>> Vic Rosenthal <k2vco.vic at gmail.com> wrote:
>>>>> Get some no. 10 stranded wire at Home Depot (etc.), double it over,
>> put one end in a vise and the other in the chuck of your electric drill and
>> twist away. Not shielded, but much better than parallel wires. I suppose
>> you could strip some RG-8 if you really wanted to shield it.
>>>>>
>>>>> Vic 4X6GP
>>>>>
>>>>>> On 20 Jun 2016, at 22:54, DGB <ns9i2016 at Bayland.net> wrote:
>>>>>>
>>>>>>
>>>>>> Jim ... where does one find #10 twisted pair? Is it shielded?
>>>>>>
>>>>>> thanks 73 Dwight NS9I
>>>>>>
>>>>>>> On 6/20/2016 12:59 PM, Jim Brown wrote:
>>>>>>>> On Mon,6/20/2016 10:33 AM, James Walker wrote:
>>>>>>>> Is it normal to register voltage as low as I’m seeing on my K-3?
>>>>>>>
>>>>>>> What you're seeing sounds like IR drop in the DC cable. How long is
>> the DC cable between the K3 and the power supply? What wire gauge? Is there
>> any equipment (like distribution panel) in between?
>>>>>>>
>>>>>>> This is a great application for a short length of #10 twisted pair
>> between the PSU and rig.
>>>>>>>
>>>>>>> 73, Jim K9YC
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>>
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