Small Wonder Labs PSK-20, Инструкция по эксплуатации

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Small Wonder Labs
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PSK-20 Transceiver Kit 03/09/10
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2000 26
FREQUENTLY-ASKED QUESTIONS :
•
How do I adjust the soundcard settings?
With DigiPan alreadly opened, look for the Speaker
icon in the lower right corner of your computer screen.
Double-click on it- the following dialog box (or
similar) should appear:
Click on the 'Options' menu and select 'Properties'
The following dialog box (or similar) will appear:
Click on "Adjust volume for
Recording as shown.
Set check marks in the three volume controls shown
above. Note: You may select more than three,
depending on what other applications you use the
soundcard for (e.g., music CDs). This set of selections
affect the number of controls shown in the master
volume dialog box.
Once you click 'OK' the dialog box closes. You may
now use the slider under "Microphone" in the Master
Volume Dialog box to set receiver levels.
You may single-click on the speaker icon to get
just the master volume slider. This control adjusts the
transmitter drive levels
. Try starting with Half-scale.
•
Why can't I adjust the display intensity on the
audio coming from the receiver?
See the previous discussion- the 'properties' dialog box
has to be set to Adjust for Recording.
•
I've clicked on a good signal but nothing's
showing up!
There are several possible causes.
-
Make sure it's a PSK31 signal- it should have the
typical 'railroad tracks ' appearance on the display.
If it's just a pair of vertical lines, it's an 'idling'
pattern and there's no information being sent.
- If the signal is badly smeared by propagation
conditions, the phase information may be lost -
PSK31 is susceptible to polar flutter.
- DigiPan has an adjustable squelch threshold. Click
on the 'SET' menu choice at the top of DigiPan
and select "Squelch Threshold"- check to ensure
the threshold slider isn't set too high for the signal
you've selected and adjust if needed.
•
What is the 'IMD' indication and how it used?
Whenever DigiPan detects an idling pattern on a
received signal, it calculates an intermod figure by
measuring sideband energy at the frequencies which
are generated by a overdriven transmitter. Note: your
QRP signal may be near the noise floor to begin with-
an IMD reading obtained from operators you're in
QSO with may not be meaningful under these
conditions
•
Why didn't you use VOX? - it would have saved a
cable!
- Windows makes assorted noises when you change
settings- these are prone to turning VOX on.
- Think "leaving the rig powered" and "music CDs"!