For tuneup simply hold an NE-2 neon bulb somewhere along the antenna (after the coupler), and tune C1 for max brillance; if the NE-2 won't fire (QRP) use a field strength meter.

Run 52 ohm coax from xmtr to the coupler so that the antenna ``begins'' after the tuner.

Run a good earth ground!

                                24 turns #12 wire
                                6 turns/inch
                                3 inch diameter 
TO <----------------*-----------/\/\/\/\/\/\/\/\----------*-------->LONG
XMTR                |                   ^                 |         WIRE
                    |                   |                 |
   <----            ---------------------                 |  /
       |                                                 ---/
       |                                                   / 140pf
       |                                                 --- variable
       |                                                 /|    cap
       |                                                  |
       *---------------------------------*-----------------
       |                                 |  
       |                                 |
     -----                              \ /
      ---                         GOOD EARTH GROUND
       -