Check the listing for details. JOHNSON VIKING Ranger I Complete Primo Tube Set 6146/A + All other tubes. Condition: Used. Listed at 234.97 USD. Amplifier/Receiver Manufacturer: JOHNSON VIKING Model: Ranger I - All tubes included Description: Complete Primo tube transmitter tubes We also have the RF tubes and modulator tube sets for the Ranger II if you don't need the audio and keyer section tubes. Note - we supply the 6L6 tubes for the modulator which replace the 1614 tubes originally supplied. I run these in my Ranger and they work very well! Amp Bias Type: reneutralize with new tubes and driver Tube Quantity in ( ) Rectifier Tubes: 5R4 (1), 6AX5 (1) OA2 (1) Preamp Tubes (matched): 6CL6/6197 (2) 6AU6/6135 (1) 6AQ5/6005 (1) 6AL5/5725 (1) 12AU7/ECC82 (2) 12AX7/ECC83 (1) Power Amp/Driver Tubes (matched): 6146 or 6146A (1), 6L6 (2) modulators Total Tubes in this set: 14