[WriteLog] DXDoubler help

[Joe Subich, W4TV]

 > I have also been looking into DXDoubler for incorporation into my
 > station, so I would be very interested in seeing this exchange, or
 > at least a summary of the points covered.

The thing to remember about DXDoubler or any other "SO2R controller"
is that they are designed to switch the user input/output between
two transceivers.  With WriteLog (and N1MM Logger) already handle
all of the inputs (microphone via the soundcard, CW and PTT with
WinKey USB, RTTY with a pair of serial ports) and receive audio can
be handled with an inexpensive audio mixer.

The SO2R controller is essentially there for "user convenience."

The more important part of SO2R operation, particularly with a
limited antenna farm is the antenna switching and bandpass filters.
The antenna switching should guarantee than both transceivers can
not connect to any antenna at the same time.  Bandpass filters
should assure, at a minimum, that any cross band signals coupled
between antennas (very important with multi-band antennas) can
not reach damaging levels but the real goal is to prevent those
cross band signals from increasing the noise floor so that one can
actually *hear* the weak signals on one band while transmitting on
another.

Finally, with regard to DX Doubler or other LPT controlled device,
it requires a "real" LPT port that is recognized by WriteLog (or
the other software you plan to use).  In the case or WriteLog,
that seems to mean that the user is limited to 32 bit operating
systems (at least I haven't seen any reports of a working 64 bit
LPT driver for WriteLog).

73,

    ... Joe, W4TV



On 1/15/2011 8:16 AM, John Bastin wrote:
>
> On Jan 14, 2011, at 16:39:44, DickT-W0RAA wrote:
>
>> I hope I can get some help with my question.  I have several questions and
>> it would probably be best if the  context was taken off the reflectors,
>> unless you felt it could benefit other members.  If you would like to get a
>> dialogue started and help me, you can e-mail me at w0raa[at]arrl.net.
>
> I have also been looking into DXDoubler for incorporation into my
station, so I would be very interested in seeing this exchange, or at
least a summary of the points covered.
>
> 73,
>
> John K8AJS
> jbastin at sssnet.com
>
>
>
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