Sub Receiver Questions

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Sub Receiver Questions

wa9fvp
While receiving on 20 meters, for example, on the main Receiver, can I receive another band using the Sub-Receiver connected to the Receiver In port?  I understand that the Sub receiver's audio is fed to the other stereo channel but is that true for the Line Out port?  Can the Sub-Receiver feed audio via the USB CODAC?
Jack WA9FVP

Sent from my home-brew I5 Core PC
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Re: Sub Receiver Questions

Bob Wilson, N6TV
On Mar 27, 2017 7:22 PM, "wa9fvp" <[hidden email]> wrote:

While receiving on 20 meters, for example, on the main Receiver, can I
receive another band using the Sub-Receiver connected to the Receiver In
port?


If CONFIG:VFO IND is set to YES, use the AUX port for the SubRx antenna
instead of RX ANT IN.  The SUB can listen to MAIN's antenna (Transmit Ant
or RX Ant) or to AUX.

From the K3 Owner's Manual:

"Sub Receiver Band Independence

"If CONFIG:VFO IND is set to YES, you can set
the sub receiver to a different band from main.
Hold BSET, then tap BAND up/down to select the
sub receiver’s band. If you only use band-
independence for the sub occasionally, you may
want to assign VFO IND to a programmable
function switch (pg. 21).

"If the two receivers are sharing the main
antenna path, putting the sub receiver on a
higher-frequency band than main may result in
signal loss in the sub. This is due to sharing of the
main receiver’s low-pass filters. If you select an
incompatible band combination, the K3 briefly
displays USE AUX as a warning. To avoid sub
receiver signal loss, use the sub’s AUX input."

With SUB active, hold down RX ANT to toggle the Sub RX antenna between MAIN
and AUX.

I understand that the Sub receiver's audio is fed to the other stereo
channel but is that true for the Line Out port?  Can the Sub-Receiver feed
audio via the USB CODAC?


Yes.  When SUB is enabled, SUB audio should be fed to the Right audio
channel of both LINE OUT and the USB Audio CODEC.

73,
Bob, N6TV
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