I have another brand of AIS Usb Stick Receiver, Seanexx.
They have a range test online from their Dual Channel Ais Stick, itīs in german, but range was up to 32 miles.
Seanexx RX200 Dual Channel AIS STick Range Test
I have the older single
channel AIS receiver from them, similar to the Aisspotter and tried out different antenna
setups with the adaptors coming with the stick,... the higher the antenna
is placed on the boat
the better the range on my boat, but always also depending on seacondition.
Iīm cruising and i have the small AIS Receiver stick as a backup to my VHF
Ais Combi (Standard Horizon Gx2100) for my old Netbook, altough i would now just get the real Dual Channel Receiver Rx200.
If you have no GPS mouse on your computer itīs ok to live a switched single
channel (Aisspotter PIA with GPS or Seanexx Rx110 with GPS).
BUT, itīs much safer if you get the signals from both AIS channels all the time in parallel, you donīt have the risk to miss any AIS message. There is a reason why all conventional AIS Receivers are Dualchannel receivers. For a landbased tightbudget Shipspotting station a oldstyle single channel Receiver would be ok for me. On my yacht where AIS is a safety
feature i want to see all the shipmovement every movement around me as early and clearly as possible => Dual Channel.
@Gyro: send me a pm when you want to know more about the range from my system.