dl09
Full Member level 4
i tried to measure the voltage going into the antenna and the current going into the antenna with a digital multimeter. i set the multimeter to 200 millivolts and sometimes i got a reading of zero volts. i used a spectrum analyser and i still saw spikes appear on the screen of the spectrum analyser. so i got a reading of zero volts and spikes appeared on the screen of the spectrum analyser, strongly indicating the antenna was radiating radio waves. so i got a reading of zero volts and the antenna is still radiating radio waves. sometimes i get a voltage reading of 100 microvolts and i see spikes on the spectrum analyser. so i get a reading of 100 microvolts and the antenna is still radiating radio waves.
this is a schematic of the circuit i am using. so the current flows out of the pin 3 of the crystal oscillator module and into the black prong and then out of the red prong and into the antenna. i am using a crystal oscillator module that has 4 pins and i tried to find a symbol for a crystal oscillator module that has 4 pins and show all the connections. the output of pin 3 is presumably a square wave with a frequency of 100 megahertz. the antenna is connected to pin 3. so does this mean i am getting false readings? does this mean the voltage is sometimes too small to measure? does this mean the multimeter cannot measure the output because the bandwidth of the multimeter is too small?
this is a schematic of the circuit i am using. so the current flows out of the pin 3 of the crystal oscillator module and into the black prong and then out of the red prong and into the antenna. i am using a crystal oscillator module that has 4 pins and i tried to find a symbol for a crystal oscillator module that has 4 pins and show all the connections. the output of pin 3 is presumably a square wave with a frequency of 100 megahertz. the antenna is connected to pin 3. so does this mean i am getting false readings? does this mean the voltage is sometimes too small to measure? does this mean the multimeter cannot measure the output because the bandwidth of the multimeter is too small?