Alford slots for 13cm and 23cm
The 2mtrs section swr is 1.3:1, whereas the two slots are 1.2:1. The shorter 492mm arm should not be in front of the 23cms slot, and should sit just below the slot and not in front. Place at 180 degrees to slot if necessary
post 23 Dec 2021
Antenna 23cm 1.2 GHz Links →
Antenna Drawing 23 cm
Si puo' realizzare in due orette, chi ha un po' esperienza
23cm Band Repeater Coaxial Collinear
The following pictures show the stages of cable preparation.Elements were cut 2% less than the published length to force downwards beam tilting
Building an omnidirectionnal antenna for the 23 cm band
Working band 1240 - 1270 MHz, horizontal polarization omnidirectionnal radiation pattern the higher possible gain realization with amateur means
Antenne rideau 23cm
ATV 23cm low cost
58
Si puo' realizzare in due orette, chi ha un po' esperienza
The following pictures show the stages of cable preparation.Elements were cut 2% less than the published length to force downwards beam tilting
Working band 1240 - 1270 MHz, horizontal polarization omnidirectionnal radiation pattern the higher possible gain realization with amateur means