2021-02-11, 08:19:39
The attachment file is the Feb 09/2021 GBARC technical presentation. The antenna I took apart was a 4 bay 70cm was the main soucre of photos and reference for the presentation. The 4 bay unit did not have any 1/4 wave matching coax in the grounded feed arm of the folded dipole. The 1/4 matching coax of a different impedance is used to make the antenna once completed a 50 ohm device. Would probably be needed for the 2 bay or 1 bay antenna. As part of phasing a multiple bay antenna, matching coax of different impedance may be needed but was not used on the reference 4 bay 70cm unit I used.
From the questions and follow-up emails, the info presented about the 4 bay diople appeared to be of great interest to those present. I know for me it changed the way I thought how they were made. If you were not there, you may find this interesting as well.
Cheers
Frank
VA3-GUF / VE0-GUF / VE0-VET
From the questions and follow-up emails, the info presented about the 4 bay diople appeared to be of great interest to those present. I know for me it changed the way I thought how they were made. If you were not there, you may find this interesting as well.
Cheers
Frank
VA3-GUF / VE0-GUF / VE0-VET