[Elecraft] KAT500 - does it earth antenna connections

[Bob McGraw]

I would suggest a dummy load be connected to antenna port #1 and your 
antennas to #2 and #3.   As to grounding, I suggest one review the ARRL 
book "Grounding and Bonding for the amateur station".

I've seen many ham stations that ground ground ground and still have 
issues, in some cases they attribute to a dangerous condition,  
regarding lightning protection and RF grounding. There is a LOT of 
incorrect and incomplete information passed around with regard to 
grounding.  It is mostly originated as  "old ham lore" with no 
scientific basis found or applied.

And yes, the KAT500 has 3 antenna ports and port #1 is the default 
selected when power is not applied.

73

Bob, K4TAX


On 10/1/2021 8:15 AM, elecraft-request at mailman.qth.net wrote:
> Message: 11
> Date: Thu, 30 Sep 2021 10:10:49 -0500
> From: Ted Edwards W3TB<w3tb.ted at gmail.com>
> To: "David Ferrington, M0XDF"<M0XDF at alphadene.co.uk>
> Cc: ElecraftList<Elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] KAT500 - does it earth antenna connections
> Message-ID:
> 	<CAGhFmTiqzrwkAxv=TY6ZGaeO=-zuT+irKQ0N42LevtkLdAOh5Q at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Interesting idea.
> I have two antennas, so I could connect my ground to #1 and antennas to #2
> and #3?
> Just manually choose an antenna on start-up.   Hm-m-m-m-m.
>
> On Thu, Sep 30, 2021 at 9:54 AM David Ferrington, M0XDF <
> M0XDF at alphadene.co.uk> wrote:
>
>> Thanks Greg - guess I should learn to count!
>> 73 de David, M0XDF
>>
>> If people knew how hard I worked to get my mastery, it wouldn't seem so
>> wonderful after all. -Michelangelo Buonarroti, sculptor, painter,
>> architect, and poet (1475-1564)
>>
>>> On 30 Sep 2021, at 15:46, Greg Mitchell<kb1awm at arrl.net>  wrote:
>>>
>>> It has 3 antenna connections, not 4. It grounds the unused ones and
>> selects antenna 1 on power-off. I put my dummy-load on antenna 1 so my
>> station is disconnected from the antennas when powered down.
>>> On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF <
>> M0XDF at alphadene.co.uk  <mailto:M0XDF at alphadene.co.uk>> wrote:
>>> Sorry if this is obvious, but I haven?t bought a KAT500 yet (to go with
>> the KPA500 I managed to pick up from a fellow ham). I?m aware there are 4
>> selectable antenna connectors. Does it ground or earth the ones not
>> currently selected?
>>> 73 de David, M0XDF (K3 #174, P3 #108)
>>>
>>> For disappearing acts, it's hard to beat what happens to the eight hours
>> supposedly left after eight of sleep and eight of work.
>>> -Doug Larson
>>>
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> -- 73 de Ted Edwards, W3TB and G?PWW and thinking about operating CW: 
> "Do today what others won't, so you can do tomorrow what others can't."