K3S with an external receiver

classic Classic list List threaded Threaded
6 messages Options
Reply | Threaded
Open this post in threaded view
|

K3S with an external receiver

JEAN-FRANCOIS
Hi,

Is there anybody ever use an external receiver with a K3S as a second receiver… to act as a second receiver that can share the same antenna the K3S use or similar setup???

The reason here is I still a have my Kenwood 590SG that I could enable TX Inhibit for safety, and use it as a second receiver only. It’s an excellent backup radio. I wondering if I could enhance my setup if possible by using spare gears.

Best 73 de Jeff | VA2SS

__________________________________________
Jeff | VA2SS
Jean-François Ménard

[hidden email]<mailto:[hidden email]>
www.VA2SS.com<http://www.VA2SS.com>

Message envoyé à partir de mon appareil mobile.
Message sent from my portable device.

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
Reply | Threaded
Open this post in threaded view
|

Re: K3S with an external receiver

Don Wilhelm
Jeff,

The only way to do that properly is to use a 3dB splitter external to
the K3S and the 590SG.
Of course, that is only for receive.  On transmit, the 3dB splitter
would have to be removed and the input to the 2nd receiver protected.

The K3S does that internally with the addition of the SubRX, and it is
done automatically if the SubRX is sharing the antenna with the main RX.
  You would have to provide the same switching externally to use an
external receiver.

The other way (more simplistic) is to connect the other receiver to the
K3S RX ANT OUT jack.  That allows the external receiver to listen on the
same band or a lower band than the K3S is tuned to.  Signals on a higher
band than the K3S is tuned to will be attenuated because the K3S Low
Pass Filters are ahead of the other receiver.

73,
Don W3FPR

On 8/24/2017 12:00 AM, JEAN-FRANCOIS wrote:
> Hi,
>
> Is there anybody ever use an external receiver with a K3S as a second receiver… to act as a second receiver that can share the same antenna the K3S use or similar setup???
>
> The reason here is I still a have my Kenwood 590SG that I could enable TX Inhibit for safety, and use it as a second receiver only. It’s an excellent backup radio. I wondering if I could enhance my setup if possible by using spare gears.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
Reply | Threaded
Open this post in threaded view
|

Re: K3S with an external receiver

Bob McGraw - K4TAX
I use the more simplistic approach as Don suggests.   I have my SDR Play
receiver connected via this manner.   No external switching is required
as that port is protected during transmit. It works great and allows me
to monitor my own signal as well.

73

Bob, K4TAX


On 8/23/2017 11:25 PM, Don Wilhelm wrote:

> Jeff,
>
> The only way to do that properly is to use a 3dB splitter external to
> the K3S and the 590SG.
> Of course, that is only for receive.  On transmit, the 3dB splitter
> would have to be removed and the input to the 2nd receiver protected.
>
> The K3S does that internally with the addition of the SubRX, and it is
> done automatically if the SubRX is sharing the antenna with the main
> RX.  You would have to provide the same switching externally to use an
> external receiver.
>
> The other way (more simplistic) is to connect the other receiver to
> the K3S RX ANT OUT jack.  That allows the external receiver to listen
> on the same band or a lower band than the K3S is tuned to. Signals on
> a higher band than the K3S is tuned to will be attenuated because the
> K3S Low Pass Filters are ahead of the other receiver.
>
> 73,
> Don W3FPR
>
> On 8/24/2017 12:00 AM, JEAN-FRANCOIS wrote:
>> Hi,
>>
>> Is there anybody ever use an external receiver with a K3S as a second
>> receiver… to act as a second receiver that can share the same antenna
>> the K3S use or similar setup???
>>
>> The reason here is I still a have my Kenwood 590SG that I could
>> enable TX Inhibit for safety, and use it as a second receiver only.
>> It’s an excellent backup radio. I wondering if I could enhance my
>> setup if possible by using spare gears.
> ______________________________________________________________


______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
Reply | Threaded
Open this post in threaded view
|

Re: K3S with an external receiver

Nr4c
In reply to this post by JEAN-FRANCOIS
I think you might check the manual antenna wiring chart, but I seem to remember you can use the Rec Ant Out jack to connect an external receiver.

Sent from my iPhone
...nr4c. bill


> On Aug 24, 2017, at 12:00 AM, JEAN-FRANCOIS <[hidden email]> wrote:
>
> Hi,
>
> Is there anybody ever use an external receiver with a K3S as a second receiver… to act as a second receiver that can share the same antenna the K3S use or similar setup???
>
> The reason here is I still a have my Kenwood 590SG that I could enable TX Inhibit for safety, and use it as a second receiver only. It’s an excellent backup radio. I wondering if I could enhance my setup if possible by using spare gears.
>
> Best 73 de Jeff | VA2SS
>
> __________________________________________
> Jeff | VA2SS
> Jean-François Ménard
>
> [hidden email]<mailto:[hidden email]>
> www.VA2SS.com<http://www.VA2SS.com>
>
> Message envoyé à partir de mon appareil mobile.
> Message sent from my portable device.
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
Reply | Threaded
Open this post in threaded view
|

Re: K3S with an external receiver

Roger D Johnson
In reply to this post by JEAN-FRANCOIS
The antenna is easy. Muting the external rx is the problem!

73, Roger


On 8/24/2017 12:00 AM, JEAN-FRANCOIS wrote:

> Hi,
>
> Is there anybody ever use an external receiver with a K3S as a second receiver… to act as a second receiver that can share the same antenna the K3S use or similar setup???
>
> The reason here is I still a have my Kenwood 590SG that I could enable TX Inhibit for safety, and use it as a second receiver only. It’s an excellent backup radio. I wondering if I could enhance my setup if possible by using spare gears.
>
> Best 73 de Jeff | VA2SS
>
> __________________________________________
> Jeff | VA2SS
> Jean-François Ménard
>
> [hidden email]<mailto:[hidden email]>
> www.VA2SS.com<http://www.VA2SS.com>
>
> Message envoyé à partir de mon appareil mobile.
> Message sent from my portable device.
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
Reply | Threaded
Open this post in threaded view
|

Re: K3S with an external receiver

Joe Subich, W4TV-4
In reply to this post by Don Wilhelm

On 8/24/2017 12:25 AM, Don Wilhelm wrote:
> The other way (more simplistic) is to connect the other receiver to
> the K3S RX ANT OUT jack. That allows the external receiver to listen
> on the same band or a lower band than the K3S is tuned to.
One should still use a splitter when connecting an external receiver
to the K3/K3S R ANT OUT jack.  The input of the splitter is connected
to RX ANT OUT, one output to RX ANT IN, the other to the second RX
and the RX ANT switch activated.

Without a splitter it is possible that the various bandpass filters
(K3 vs. external RS) and/or basic input impedance can cause one RX
or the other to "hog" the input signal level ("suck out") making the
other RX "deaf".  A splitter will resolve this issue at the cost of
3 to 4 dB of signal level (3 dB is unavoidable even with a perfect
split).

73,

    ... Joe, W4TV


On 8/24/2017 12:25 AM, Don Wilhelm wrote:

> Jeff,
>
> The only way to do that properly is to use a 3dB splitter external to
> the K3S and the 590SG.
> Of course, that is only for receive.  On transmit, the 3dB splitter
> would have to be removed and the input to the 2nd receiver protected.
>
> The K3S does that internally with the addition of the SubRX, and it is
> done automatically if the SubRX is sharing the antenna with the main RX.
>   You would have to provide the same switching externally to use an
> external receiver.
>
> The other way (more simplistic) is to connect the other receiver to the
> K3S RX ANT OUT jack.  That allows the external receiver to listen on the
> same band or a lower band than the K3S is tuned to.  Signals on a higher
> band than the K3S is tuned to will be attenuated because the K3S Low
> Pass Filters are ahead of the other receiver.
>
> 73,
> Don W3FPR
>
> On 8/24/2017 12:00 AM, JEAN-FRANCOIS wrote:
>> Hi,
>>
>> Is there anybody ever use an external receiver with a K3S as a second
>> receiver… to act as a second receiver that can share the same antenna
>> the K3S use or similar setup???
>>
>> The reason here is I still a have my Kenwood 590SG that I could enable
>> TX Inhibit for safety, and use it as a second receiver only. It’s an
>> excellent backup radio. I wondering if I could enhance my setup if
>> possible by using spare gears.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]