He claims it will noticeably improve both transmit and receive by making a quarter-wave monopole into a makeshift dipole antenna ... a counterpoise antenna wire 11.5 inch for VHF, 6.5 for UHF ...

Review and application of electromagnetic theory for antenna analysis. Radiation pattern, gain, input impedance. Half wave, full wave dipole antennas, monopole antennas. Image theory. Antenna arrays.