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 ...

That makes sense because the antenna is physically larger but at VHF the size didn’t seem a big difference. He even showed up a little real-world testing and, as you might predict, the test ...

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