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en:ovi40what:description [07.02.2018 21:10] – [Frequenzaufbereitung] df9ts | en:ovi40what:description [07.02.2018 21:19] – [Tranverternutzung] df9ts | ||
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Unfortunatelly this approach cannot be used below 3.5 MHz since the 90 degree shift cannot be guaranteed for all frequencies generated anymore. This is why the RF board is using a classical divider to generate the 90 degree signals for all frequencies below 3.5 MHz. | Unfortunatelly this approach cannot be used below 3.5 MHz since the 90 degree shift cannot be guaranteed for all frequencies generated anymore. This is why the RF board is using a classical divider to generate the 90 degree signals for all frequencies below 3.5 MHz. | ||
- | ==== Tranverternutzung | + | ==== Use with a transverter |
- | === Transverter | + | === Transverter |
- | Die UHSDR Software unterstützt bereits die Transverter Offseteinstellung. Dazu: | + | The UHSDR software already supports transverter offset settings: |
- | * 10m-Band (oder 20m Band) wählen als Transverterband | + | * Choose |
- | * in Config-Menü | + | * in configuration menu set "XVTR Offs/Mult" to "ON" |
- | * eine Zeile tiefer | + | * one line below in config menu set frequency difference (usually the transverter' |
- | === OVI40-SDR | + | === OVI40-SDR |
- | Der OVI40 hat an diversen interessanten Schnittstellen die Signale an SMA-Buchsen herausgeführt. Die Buchsen sind nicht fest mit der RF-Platine verbunden, damit man Gehäuse-mäßig nicht eingeschränkt ist. Auf der RF-Platine bzw. den entsprechenden Modulen werden TE-Connectoren ([[https:// | + | The OVI40 provides various signals on internal |
- | Die Transverter Signale sollen so rein wie möglich sein. Deshalb werden sie vor der PA abgegriffen sowie nach dem Vorverstärker am RX. | + | The transverter signals need to be as spectrally pure as possible. This is why they are connected to before the PA and after the RX pre-amp. |