[Elecraft] K3 Receiver Antenna Routing

[Ed Muns]

> The second paragraph from the bottom one page 1 reads ...
> 
> Relay K1 allows the subreceiver to share the main receiver's 
> RF source, or use its auxiliary RF input.  This means that 
> two receiving antennas could be used. But it's also possible 
> to route a single receiving antenna to both the RX ANT IN and 
> AUX RF jacks using a "Y" adapter.  This would allow the 
> subreceiver to use the antenna connected to RX ANT IN even if 
> the main receiver were using ANT 1.  No external splitter is 
> required because only one of the receivers will be connected 
> to the receiving antenna at a time.
> 
> --
> 
> Wayne,
> 
> I don't understand the last sentence in the above paragraph.  
> Am I missing something here?

Normally, if you wanted a single RX antenna to feed both receivers, you'd
have K2 selecting RX ANT and K1 in the "shared RF path mode".  Then, the
internal 3 dB splitter in the K3 would be operative, i.e., with BSET on, the
RX icon should be off ... which indicates the second receiver is sharing the
main receive RF path with the main.

So, while you COULD set it up so both receivers were using their RX antenna
connectors and therefore connected together via the simple Y-adapter, you
should avoid doing so.  Instead, when using a Y-adapter to connect one
receive antenna to both the RX ANT and AUX RF jacks, always make sure the
display RX icon is not simultaneously lit for both the 'ON' and 'OFF' states
of BSET.

73,
Ed - W0YK