Total posts : 45366
… Theoretically, if these radios are built with any decent quality control I should be able to determine what dbu = what mv, etc. and if this holds even slightly accurate from radio to radio ya’ll could use the info for some non-scientific field strength readings. … experiment results to come _________________
Just to note that the “dBµ” number shown in the LCD displays of such receivers is NOT an accurate measure of the field intensity present at its receive antenna.
It is based on the r-f voltage present across the __input terminals__ of that receiver with reference to decibels above one microvolt across that input impedance.
That value can differ greatly from the field intensity in dBµV/m from the transmit system arriving at the receive antenna to produce that input terminal voltage in such a receiver.
Below is a graphic showing measured results, proving this.