You make a valid point regarding the Wi-Fi card, as the EtherScope I or II only used a card that worked on 802.11a/b/g. I am not sure if there was a card that would work which would go up to 802.11n. I was hoping I could find what card they use as maybe I could get a different brand other than the Fluke PCMCIA or PC Card to work. Another issue is my EtherScope II would need an upgrade "code" that is normally supplied by "Flukenetworks.com" which appears to be no longer active.
I do have both an 802.11g and an 802.11n network (both are due to the supplied Technicolor TC8717T cable modem/router/Wi-Fi from Spectrum), but the offending items are on the 802.11g network to give me a stronger signal and longer distance. I live in a rural area with very little interference from other nearby networks. I know I could move to a better wireless router as I have some "commercial" Cisco units as well as standard Linksys and other "home" Wi-Fi routers, but the Technicolor Wi-Fi router has what seems to be a very good easily understood firewall system in place. I found that it was set up for DHCP to renew leases every day, so I changed it to weekly and most of my problems followed the new lease times. This is why I am thinking of just forcing all items to use the lower 200 static IP addresses and allow the occasional oddball Wi-Fi unit I may be testing to grab a DHCP lease from the upper 54 numbers.
The Amazon Echo devices seem to have a weak signal as another close by Wi-Fi connection (like a cell phone using Wi-Fi), will cause it to lose its connection. I thought of using extenders to increase my range and signal strength, but any extenders will not keep the exact same Wi-Fi name (they append a number). Unfortunately, my home security system wants to connect all cameras to the same named subnet. The commercial Cisco units are more complex than I need as they are designed for a commercial enterprise system with server validation of all connections, so they are a little too complicated.
Sorry for such a long message, but I was hoping someone may understand my concerns.