K3 RX IN/OUT and Splitters

[VO1HPFrank]

I am want to split my BOG RX antenna between my K3 RX IN jack and the ANT
port on my AFEDRI-LAN SDR at my remote site.  I am going to access the SDR
remotely using SDR Console and run CW SKIMMER on the ARRL DX Contest PC in
the home shack.  My K3 has no built in Tuner and no 2nd RX.

I have been  looking at various schemes people are using to split antenna
feeds.  Some are using a splitter between the RX IN/OUT jacks on the K3.
 What is the point of doing that?  The MAIN Ant port is always used as TX
antenna.  When  RX  ANT (Tap) is activated the RX IN Port is connected to
the RX/TX and the MAIN ANT Port is connected to the RX OUT port.   I see
people talking about the RX ANT "LOOP" .  As far as I can see there is no
RX ANT "LOOP".  What is the point of the splitter between those those two
jacks.?  The jacks are labelled RX IN and RX OUT.  The labels imply that
the RX antenna also appears at the RX OUT jack but that is not the case.

I am just going to connect a BNC "T" in the BOG RG6 line at the radio  and
feed the K3 RX IN port and the AFEDRI-LAN ANT port.  If that doesn't work
satisfactorily ...I'll use a passive splitter in the RG6.

Am I on the right track?

73
Frank VO1HP


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[Don Wilhelm]

Frank,

You are definitely on the right track.

The RX IN/OUT jacks are for the insertion of an external preamplifier or
a splitter to tap off the main TX antenna.  If using only RX IN, that
antenna input will be used when you select RX ANT.

Since you are using a separate RX antenna and want to split it to the K3
as well as another receiver, put the "T" or splitter on the antenna, one
output to the K3 RX IN and the 2nd to the other receiver.
On the K3, you will have to activate the RX ANT - if you do not, the
receive will be from the main TX antenna.

73,
Don W3FPR

On 12/6/2018 6:15 PM, Frank VO1HP wrote:

> I am want to split my BOG RX antenna between my K3 RX IN jack and the ANT
> port on my AFEDRI-LAN SDR at my remote site.  I am going to access the SDR
> remotely using SDR Console and run CW SKIMMER on the ARRL DX Contest PC in
> the home shack.  My K3 has no built in Tuner and no 2nd RX.
>
> I have been  looking at various schemes people are using to split antenna
> feeds.  Some are using a splitter between the RX IN/OUT jacks on the K3.
>   What is the point of doing that?  The MAIN Ant port is always used as TX
> antenna.  When  RX  ANT (Tap) is activated the RX IN Port is connected to
> the RX/TX and the MAIN ANT Port is connected to the RX OUT port.   I see
> people talking about the RX ANT "LOOP" .  As far as I can see there is no
> RX ANT "LOOP".  What is the point of the splitter between those those two
> jacks.?  The jacks are labelled RX IN and RX OUT.  The labels imply that
> the RX antenna also appears at the RX OUT jack but that is not the case.
>
> I am just going to connect a BNC "T" in the BOG RG6 line at the radio  and
> feed the K3 RX IN port and the AFEDRI-LAN ANT port.  If that doesn't work
> satisfactorily ...I'll use a passive splitter in the RG6.
>

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