RADIXON WiNRADiO EXCALIBUR PRO WR-G33DDC, User Manual

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WiNRADiO G33DDC HF Receiver
78
Recording starts when the Recording button is engaged, and stops when
the Stop button is pressed. A Pause button is also available, to
temporarily pause both the recording and playback.
Playback is done by pressing the Play button . The Loop button makes
it possible to play the recorded file in an infinite loop.
The DDC recorder can record
files with the extension “
.ddc
” or “.
rxw
”. The
Audio recorder will record in the standard Windows wave format (extension
“
.wav
”) or in the “.
wwv
” format. The actual format can be chosen in the
Browse file dialog or just by typing the file extension in the file name edit box.
For more details regarding the recording formats, please see Appendix G -
Recording File Formats .
The recorded file path can be set up using the File path edit box. The
directory Browse button can be used to advantage, instead of typing the path
and file names.
The Prebuffer control sets the time for pre-buffering, which means that the
recorder will include the specified number of seconds of recording before you
press the recording start button. This is in order not to miss the start of an
interesting transmission. The pre-buffering interval can be set from zero to 3
seconds for DDC recordings and from zero to 30 seconds for audio
recordings.
The Insert FDT button serves to insert the current local time and the currently
tuned frequency into the file name (with DDC files this will be the current
center frequency of the DDC bandwidth). As a result, the file name may for
example look like this:
rec-12.345678MHz_11-07-
04_15’34’57.ddc
(for DDC
files) or rec-12.345678MHz_11-07-
04_15’34’57.wav
(for audio files. This is
very useful especially with DDC files: If DDC files are played back with a
frequency inserted in the file name in this way, it will be assumed that this
frequency is the DDC center frequency. It will then be possible to tune to
frequencies within the DDC passband as if the recorded signal was a real-time
transmission.
The Split button, when engaged, prevents the size of the recorded files from
exceeding 2 GB (larger files may be inconvenient to handle). If the file size
reaches 2 GB, the file will be automatically closed and named (for example)
rec-12.345678MHz-^001.ddc
, where the “
^
” symbol denotes a split section.
Recording will then automatically continue into a file called
rec-12.345678MHz-^002.ddc . When the file is played back, the recorder will
automatically assemble the related split sections and play them back
seamlessly.