[Elecraft] Diversity receive w/o dedicated receive antenna

[Jon K Hellan]

On 07/03/2012 06:08 PM, Erik Basilier wrote:

> To have the second receiver and not use it for diversity is a tragedy.

Probably true. But I very rarely have enough isolation between my 
antennas. So if I try diversity, the front end protection relays start 
buzzing when I transmit. The consensus seems to be that you shouldn't 
rely on the relays.

The main antenna is simply disconnected while transmitting. Why isn't 
the sub-rx antenna? You're absolutely right, as long as I can't use 
diversity, dual watch would help me just as much as having a sub-rx does.

Jon LA4RT

After
> you set the rf gain on the subreceiver to get a decent balance between the
> two receivers, you will find that the second receiver often allows you to
> hear a station in the second rx that is temporarily unreadable in the main
> receiver due to qsb. Also, in crowded band conditions the different stations
> within the receiver passband will arrive with varying polarizations, and you
> can hear them spatially separated like orchestra instruments on a stereo
> "sound stage". This is helpful both for ssb and cw. Sometimes it can even
> help with multiple cw signals on the exact same frequency.
>
>
>
> 73,
>
> Erik K7TV
>
>
>
>> Your second antenna  does NOT need to be resonant to receive, either by
> itself or with another in diversity mode. My receive antenna is seasonal so
> I have employed antennas for other bands for receive when it is not up.
> While a non resonant will not present as strong a signal, it also will not
> present as strong a noise. The S/N ratio is unchanged but the human ear
> seems to hear better when the noise is reduced. I typically use an antenna
> for the next band (even harmonic).
>
>
>
> 73,
>
> Jim W5QM
>
>
>
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