SDR-Dongle (R820T) with TCXO +- 0.5 ppm

Product no.: 53505

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67.83
Price incl. 19% VAT, plus delivery (VAT will be corrected for outside EU orders during checkout)
Delivery weight: 0.06 kg

Unavailable! Replaced by RTL-SDR R820T2 TCXO Dongle 

(Please observe new connectors)

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This high precision R820T dongle has been manually converted to a low drift, low tolerance version by Nobu Saitou from Japan.

The internal 28.8 MHz crystal was replaced by a 28.8 MHz temperature compensated oscillator (TCXO). By this means the drift/tolerance of the dongle's base frequency is reduced to max. 0.5 ppm (2 kHz @ 1 GHz, 200 Hz @ 100 MHz). Dongles that are used in narrow band SDR applications will benefit from this increased stability as the tuning frequency accuracy and stability will be increased dramatically.

In comparison: start-up frequency precision of the Standard R820T dongles is up to max. +-100 ppm, which equals 100 kHz at 1 GHz or 10 kHz at 100 MHz. While the dongle starts operating it heats up and the oscillator will drift slowly to another frequency of up to 20 ppm. For narrow band SDR applications the Standard dongle must be calibrated and the temperature drift must be followed by adequate means.

IMPORTANT: for ADS-B reception on 1090 MHz neither the frequency precision nor the drift are relevant. ADS-B signals have a bandwidth of 2 MHz (-3 dB) and even a maximum offset of 100 kHz does not influence the quality of the reception.

Please read more about a comparison between the converted and unconverted types of dongles in the RTL-SDR blog.

Our TCXO dongles will be delivered without software, installation notes, antenna and SMA or IEC adapter.

 

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