Tagged: temperature stability

RTL-SDR with Forced Air Cooling

Over on his blog, Nobu has uploaded a post showing his experiments with a forced air cooled RTL-SDR dongle (note the blog is in Japanese so use Google Translate). A tiny fan from RS components is attached to the case of the dongle and draws power from the dongles own power regulator. Nobu also replaced the crystal oscillator with a flat packaged oscillator for a better fit.

The translation is a little difficult, but it appears the fan was able to successfully stabilize the temperature. This may be an alternative to the temperature controlled oscillator (TCXO) RTL-SDR modification.

EDIT: It seems that the fan is not to improve temperature stability, but rather to improve sensitivity. Nobu has referenced this experiment which shows that improved heat dissipation improves the dongles sensitivity.

Fan Forced Cooled RTL-SDR
Forced Air Cooled RTL-SDR