BG5BNW The 7300 is more expensive domestically, but the 710 is cheaper. If you choose a used one, the 7300 might be a good option.
BG0GAA The 7300 is very good and has been in use for many years. The technology is also quite mature.
BA8BAK BG7NOD I realized after receiving it that I needed to purchase a separate DC power supply separately, and I always thought it was a 220V plug-in type. Do any of the older users have any recommendations?
BA8BAK BG6XVJ I don't have the capability; I should get a linear power supply, such as the GSV3000 or the FP-1030A.