The External Clock cable allows the RSPduo RSP2 or RSP2pro Master Oscillator to be supplied from the SDR-Kits GPSDO instead of from the internal RSP2 TCXO clock.
The Typical frequency stability of the GPSDO is +/- 1 part per Billion (1e9) after lock is obtained versus +/- 0.5 parts per Million (0.5e-6) for the internal RSP2 or RSP2pro clock, hence any frequency drift is reduced by a factor of 500.
What does this mean in practice? There are certain application when receiving transmissions in the higher UHF band or in the L-Band where the RSP2 receive frequency will shift by as high as 500 Hz or even more during the night in a cold room when the Central Heating is switched off. When GPRS output signal is used as external clock for the RSP2 the Receive frequency will move by less than 10 – 15 Hz, providing uninterrupted reception of wanted transmissions or frequency data collection for Astronomy or Scientific purposes.
How to use: Set the GPSDO to generate 24.000 MHz locked to the GPS
network and plug in MCX connector into the RSP2 or RSP2pro Ext Clock-in
Connector. Next plug in the USB Cable into the RSP2 and start the GPSDO
application. The RSP2 is now using the GPSDO 24 MHz Precision
The External Clock Cable consists of a BNC Plug to MCX cable, plugged into a BNC T-connector which is terminated by a 50 Ohm BNC Load resistor, which is critical for forcing the RSP2 to accept the External clock input.
Note: Mini GPSDO Only: SMA Plug to BNC Jack Adapter Connector, or similar is also required to connect the External Clock Cable to the Mini GPSDO
GPSDO -RSPduo - RSP2 or RSP2Pro External Clock in Cable
- Product Code: Ext Clock Cable GPSDO-RSP2
- Availability: In Stock
- incl VAT: £7.50
- Indicative prices in EURO: €7.25, incl VAT: €8.70
- Indicative prices in USD $8.25