Otu njikwa obere usoro Black Loop nwere akwụkwọ ntuziaka onye nwe BJF
Mụta ka ị ga-esi welie iguzosi ike n'ezi ụda gị site na iji otu akara obere akara ojii na-egosipụta ihe nchekwa BJF. Chọpụta otu esi ejikọta ọtụtụ mmetụta wee gbanwee n'etiti amplifers na-agba mbọ na nke a vasatail loop switcher.