Difference between revisions of "QtRadio - Operation"
From Ghpsdr3 SDR project
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== Tuning the radio == | == Tuning the radio == | ||
=== Fixed frequency radio === | === Fixed frequency radio === | ||
| − | For crystal locked radios such as the softrock lite II or YU1LM sdr's It is necessary to use [[Using subRx | subrx]]. The procedure is to set vfoA to your centre frequency, usually the crystal frequency / 4 and leave it alone as changing it will affect your centre frequency. Using the button on the vfo panel or the 'Receiver' Menu / subRx choice switch on the subRx. You can now tune within the limits of the sample rate of your sound card (48, 96 or 192 KHz) with your centre frequency offset from centre by 9 KHz. | + | For crystal locked radios such as the softrock lite II or YU1LM sdr's It is necessary to use [[#Using subRx | subrx]]. The procedure is to set vfoA to your centre frequency, usually the crystal frequency / 4 and leave it alone as changing it will affect your centre frequency. Using the button on the vfo panel or the 'Receiver' Menu / subRx choice switch on the subRx. You can now tune within the limits of the sample rate of your sound card (48, 96 or 192 KHz) with your centre frequency offset from centre by 9 KHz. |
Note there is still a bug in the display where the lower 9 KHz wraps to the upper 9 KHz but the audio doesn't track the spectrum so you lose 9 KHz of possible bandwidth. | Note there is still a bug in the display where the lower 9 KHz wraps to the upper 9 KHz but the audio doesn't track the spectrum so you lose 9 KHz of possible bandwidth. | ||
Revision as of 06:53, 13 November 2011
Contents
Connecting to a server
Tuning the radio
Fixed frequency radio
For crystal locked radios such as the softrock lite II or YU1LM sdr's It is necessary to use subrx. The procedure is to set vfoA to your centre frequency, usually the crystal frequency / 4 and leave it alone as changing it will affect your centre frequency. Using the button on the vfo panel or the 'Receiver' Menu / subRx choice switch on the subRx. You can now tune within the limits of the sample rate of your sound card (48, 96 or 192 KHz) with your centre frequency offset from centre by 9 KHz.
Note there is still a bug in the display where the lower 9 KHz wraps to the upper 9 KHz but the audio doesn't track the spectrum so you lose 9 KHz of possible bandwidth.
si570 tunable radio
Setting the noise floor
Calibrating the S meter
VFO and Split selection
Using RIT
Changing bands
Using Quick Memories
Using subRx
To be constructed
