I understand completely -- You want a procedure. I'm good at writing procedures and won't let you down. But you will have to wait for me to do it. (Like my 160 Meter loop antenna.) Since I haven't done this yet let me help get you started: Let's try the 40 Meter band since everyone uses it a lot. I think we could leverage the transforme action principals of the 160 Meter TX loop on my web page for this design. http://www.qsl.net/we6w/projects/160_loop.txt The loop properties transformed to 40 meters equates to the following: 1/10 wavelength at 40 Meters: 14 feet #12 AWG wire. 1/100 wavelength at 40 meters: 1.4 feeet #12 AWG wire. OK. The circumference of 4" diameter PVC is about 12.56" 14 feet of wire on that pipe is about 13.4 turns. call it 14 turns. Spreading the wire over 1/2 spacing results in about 8 to 9" pvc pipe used. Use maybe a 10" pipe to fit some end capping wooden discs. PROCEDURE 1.0 Wrap Wire on PVC. Wrap 14 turns #12 AWG wire onto 10" length of 4" diameter pvc Pipe. Space turns 1/2 inch and Tape or epoxy in place. Or hacksaw marks into the pvc to hold the wire on the form. 1.1 Wrap the 1.4 foot length of wire (Primary connected to transmitter) on a 1" diameter PVC pipe, 1/2 inch spacing for a total of about 5 turns. This pipe is about 6 inches long. Leave room for end caps. 1.2 Slice a 7/16" diameter dowel of wood forming two disks, each about 1" thick and screw/dowel/or glue as end caps into the smaller pvc pipe. Drill a hole, centered in each end cap and pass a wooden 1/4 inch dowel of wood completely through the smapp pipe and glue together. You now have a "Hotdog on a stick!" This is the primary which you will slide into the larger PVC mounted coil. The larger Coil should have End Caps and the 1/4" wooden dowel should be able to pass through holes and support the primary. 1.3. Connect the Secondary output wires across a TRANSMITTING capacitor tunable from 27 to about 350 pF. When tuned up you will have high voltage, suitable for the END-FED wire, SO DON'T TOUCH when transmitting!!! 1.4 Connect the primary wires directly to the output of your transmitter. No need for a balun. Just get some alligator clips to connect the center/ground to the primary wires. 1.5 At the design frequency, calculate a length of wire equal to a half-wavelength. on 7.04 MHz this is 468/7.04= 66' 6" Using 88% velocity factor for rubber coated wire the antenna should be 58'-6". Connect one end to one of the capacitor lugs, the other up high and out of the way. If you can't reach the 100' support post, just tie off and insulator made of plastic with drilled holes and run rope to it and the antenna support. OPERATION 2.0 Connect up transmitter/receiver and a SWR meter. Listen to the 7.04 MHz band you designed the antenna for. Peak signals and noise with the Transmitting capacitor and the primary centered under the Secondary coil. Before transmitting, you might want to note what affect moving the primary in/out has on signals. OK. NOW WITH LOW POWER, about 1 watt, key the rig and check the VSWR on your meter. Do not re-adjust the Capacitor of the tuned network yet. Instead, gently slide the primary away from the center of the tuned network. Re-peak the SWR meter (Calibration) and re-check SWR. Continue adjusting the primary, WRITING down SWR's measured as you go. After characterizing the range of SWR's available (Read impedance transformations), return the primary to center and adjust the tuning capacitor while searching for best SWR with primary centered. Success Factors 3.0 Your goal is to establish resonance in the secondary loop and verify a good match to the rig using the Primary ONLY. Very minor adjustments in the Antenna capacitor are very acceptable and expected but I try to stay close to resonance in the loop and have found with 5 KHz bandwidth you can tune the capacitor for 1.0:1 VSWR without any problem. Perform field measurements with a FS meter. I would recommend putting a NE-2 bulb on antenna input wire. Just wrap both legs around the wire. Don't let the two legs get shorted together. Practice tuning up into the bulb! Fun to watch the "glow". And now that I've written this up, I have something to remind me what I'm gonna do this Saturday. Sunday I will be at the Norcal meeting :) -Ed An Interested HAM wrote: > Ed I ain't sure I am that sharp. I got it until you started attaching > caps and dipping meters. See I am to new at this stuff. You say " OK go > get 4' of 4" PVC, 4' of 1" PVC and 25' of RG-8x coax. wrap it n turns x" > apart connect here and here stick a SO-239 on either end and check the > SWR" Then I'll start asking how does that work. > Yes I have a ARRL handbook & antenna book(got 'em from the library) tell > me what to read. HI HI > > 73, Ham Friend Jun. 3, 1998 (c) Ed Loranger, all rights. Personal use only. Ed Loranger email: we6w@qsl.net