0.5-470MHz high-frequency signal source RF signal generator FM walkie talkie sensitivity test RF signal generator tester

 High frequency signal source, radio frequency signal source (0.5-470MHz)  1. specially for FM interphone debugging  2. frequency 0.5MHz-470MHz  3. the output signal strength is -70 to -132dBm (other values are invalid).  4. built in 800Hz audio modulation (FM mode modulation).  5. using 8-12V DC power supply  6. frequency 7 digit example: 439.0125MHz display 4390125 if 439.125MHz display 4391250  7. (prohibit the input power, once the input exceeds 0dbm power will burn the signal source).  8. random no power supply, no test line, no paper instructions, specific operation methods see webpage introduction.  The operation method is as follows:  The F1: cycle chooses to set the item "to" the selected item, the frequency, the signal strength, and the frequency of the audio modulation respectively.  Backspace key for F2: input error  F3: turn off, open signal output  F4: turn off, open audio signal modulation  Numeric key: directly input the number of selected items  Up and down