Ron wrote:
"Want to make a small directional antenna in UHF bands---."

John Devoldere, ON4UN considers short elements on page 8-10 of "Low-Band
DXing". This is an ARRL publication and contains much valuable
information. Antennas scale to any wavelength. Reciprocity rules, so it
makes no difference if you want to transmit or receive except that
efficiency is more important for transmitting antennas, usually.

John Kraus, W8JK considers short dipoles on page 166 of "Antennas For
All Applications". This is a McGraw-Hill publication and worth every
penny it costs.

Best regards, Richard Harrison, KB5WZI