[Elecraft] K3: Receive Ant Question

[Don Wilhelm]

Brian,

There is a "*" next to that "spark gap" and a note on the diagram which 
defines the "*" as a COR.
Yes, there also is a spark gap.

73,
Don W3FPR

On 11/13/2013 6:29 PM, Brian Alsop wrote:
> Hi Don,
>
> Correct me if I am wrong.
>
> The back panel diagram of the K3 shows two BNC's labed RX antenna.  I 
> thought the thread originator was referring to this input path for a 
> RX antenna. It's what I use for RX antenna input.
>
> I see "spark gaps" on the inputs on those pages you quote.  I don't 
> see a carrier operated relay for the above BNC's.  If it is there. I 
> don't see it on the schematics.  The relay that is there is to 
> complete the rx/tx circuit when the BNC's are not in use. At least 
> that's what I can glean from the circuit.
>
> The aux antenna BNC didn't come till later when the subrx and 
> diversity reception became a reality.  It does have a real relay that 
> goes click, click with too much RF.  It also has a spark gap protector.
>
> 73 de Brian/K3KO
>
>
>
>
>
> On 11/13/2013 22:56, Don Wilhelm wrote:
>> All the antenna configuration diagrams in the K3 manual show a COR on
>> the RX ant input.
>> See pages 41 through 44.
>>
>> 73,
>> Don W3FPR
>>
>> On 11/13/2013 5:43 PM, Brian Alsop wrote:
>>> Guys,
>>>
>>> I thought he said RX antenna input.  The COR is on the aux ant input.
>>> There is no COR on the RX antenna input (it's not needed, I think.)
>>>
>>>
>>> 73 de Brian/K3KO
>>>
>>
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