Hello once again to all my fellow operators.Does anyone know of a drop-in replacement for the 6lf6 tube that may be a little cheaper.I heard that a 6kd6 will work but draws 2.5 more amps so not good for amp. If anyone has any input on this subject that would be great! P.S. Would like to hear from you on the air as well,I stand by channel 38lsb during the day,just yell for 355 in the Great Lakes and see if we can make a dx contact.Take care,Riveratt.