73 High Pressure Oil Pump Leak - Brightlocal News
The wikipedia s meter article cites: Iaru region 1 technical recommendation r. 1 defines s9 for the hf bands to be a receiver input power of -73 dbm. This is a level of 50 microvolts at the receiver's Γ’β¬Β¦
Sometime operators will prematurely respond with their callsign, without waiting to hear if the other station has Γ’β¬Β¦