Some warmer weather conditions causes interesting radio reception on 100.9

You might be noticing some intermittent interference to our signal at the edges of town such as areas just past Nut Tree. It's called tropospheric ducting and it's characteristic during special warm weather conditions.

Tropospheric ducting occurs when the temperature of the upper level air mass is higher than the lower air mass. It's called, "temperature Inversion" and it causes a refraction of certain distant radio signals -- especially at frequencies of 100mHz and higher (we're 100.9). That's why you may hear a "breakthrough" of our radio neighbor's signal from Tracy, Ca. a little more than usual. 


NOTE: They're not doing anything to intentionally cause interference with our signal. It's just the result of the weather conditions that can occur -- especially in the early morning and around sunset. This seems to happen in our area more often in the spring and summer.
 

This won't generally happen to our local friends at KUIC 95.3 because their signal is much more powerful than ours and their channel is generally less affected by tropospheric ducting.