I'd like to build the antenna from the following page;
2) Or, should I use the copper tube method shown here,
"Next, cut four pieces of UT141 coax 80mm long, and strip 1.5mm of outer from each end, leaving a total outside length of 77mm. These will form part of the phasing assembly. Follow the diagram as to the connection of these pieces of coax. Connection of two double quads in parallel will result in an impedance of 25 ohms."
Please view >4double quad back jpg< at bottom of page as reference.
I assume he's describing the 77mm pieces that run at a 45* angles, however the picture does not show
UT141 coax as he describes.
4) Again the author states:" Next for the 25ohm to 100 ohm matching sections, cut two pieces of 61mm UT141, again strip the outer back 1.5mm from each end to leave a outside length of 58mm. Of course 2 100 ohm coax's in parallel will result in an impedance of 50 ohms. Connect each piece to the joined 77mm lengths as per the diagram. Under the connector, both centre conductors from the 58mm lengths are connected to the centre pin of the SMA socket. Solder the outer of these lengths to the SMA socket body to ensure a good earth connection."
Again he says use UT141 but I don't see it in the picture.
I'm looking forward to your input!
Thanks, Mike