On Sun, May 4, 2025 at 10:17 AM, Jon wrote:
Please note that it is a very delicate piece of equipment to be used with
extreme care. Some have lost it by inadvertently transmitting while NanoVNA
is connected to another nearby antenna.
It is also very easy to damage ANY instrument by connecting a charged cable to one of its inputs. A cable can pick up a charge from being flexed or from the internal friction of being unrolled; ungrounded antennas can be charged by wind currents. It is good practice to discharge all cables by momentarily shorting inner and outer conductors before mating them; often it is possible to do this using the outer conductor of the mating connector, coin, tweezers, etc.
73, Don N2VGU
Donald S Brant Jr