I'm experimenting with the 434 MHz RF Link transmitter (WRL-10534) from SparkFun. I'd like to determine the peak-to-peak voltage of the RF output, but I don't have access to an oscilloscope that can measure this signal. The datasheet for the transmitter says that the output power is 14dBm. The transmitter's supply voltage ranges from 1.5 ~ 12V so I assume the 14dBm spec is full power when operating with a 12V supply.
Can anyone suggest how I can determine the peak to peak voltage of the RF output?