User's Manual

WiNRADiO G39DDC User’s Guide
85
Audio recordings can be controlled by the squelch condition. Should the
recording pause if the receiver is squelched, this can be set up by checking
the Pause recording if squelched checkbox. (This function is not applicable
to DDC recordings.)
The Insert frequency and date/time facility 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.
Attenuator
For the HF section of the receiver (9 kHz to 50 MHz), the Attenuator makes it
possible to reduce the signal coming to the ADC and therefore the receiver’s
sensitivity. This is useful in situations where strong signals cause overload.
Overload is indicated by the words “ADC CLP” appearing in the S-meter:
The attenuator is variable from zero to 18 dB, in 6 dB steps. It can be engaged
by pressing the Attenuator button, which will also enable manual selection of
the attenuation value.
Pressing the Auto button will adjust the attenuator automatically by increasing
the attenuation to the point when overload stops. (However, it does not
automatically decrease the attenuation if the original strong signal disappears;
this needs to be done manually.)