I like wire antennas for QRP. I am considering purchasing an antenna analyzer: 1. What antenna analyzer features do I need to determine optimum feedline length, so I do not need a balun or a tuner? 2. Is the MFJ 801 Field Strength Meter sufficient to measure actual low takeoff angle "lobe" antenna gain, if I walk out the appropriate distance? use a long pole more nearby to get the reading? 3. Is there a practical method I might use to find ERP effective radiated performance? I am also interested in antenna modeling results.