Acrylic sheet for antenna
Displaying 1-2 of 2
| Apr 8th 2018, 14:34 | |
N0CHSTotal Topics: 0 Total Posts: 0 |
Is a 1/4" thick sheet of acrylic considered a insulator (dialectric?). I saw a 2m/70cm vert. dipole by Dave Tadlock. He used a 1/4"x18"x2.5" acrylic plate to mount the 2 elements. They are being held stationary by only 1 bolt each. I want to cut a T shape vs. a rectangle then use a metal bolt as he describes THEN for more movement security, a nylon bolt further up between each bent elements. ==================== plate edge + 2m element O. O. (1st bolt stl. 2nd nylon) =========_____________ plate edge + 70cm element Hope diagram makes sense!! Dave Tadlock's antenna: (google / homebrew 2m/70cm vertical dipole antenna) 73s Colin, W1EEK |
| Apr 9th 2018, 09:50 | |
W1VTSuper Moderator Total Topics: 0 Total Posts: 0 |
Acrylic has good scratch resistance and optical clarity, but tends to be weak and brittle, so it is a surprise that his antenna lasted so long. I prefer to use Lexan or polycarbonate as an low impedance antenna feedpoint insulator. Zak W1VT ARRL Senior Lab Engineer |
Displaying 1-2 of 2
