20/40 meter 450 ohm Window Line Dual Band Inverted V Dipole Wire Antenna by KI6QEL August 2010   This is a description of how I built my first wire antenna using 450 ohm window line. The idea was to make an antenna that I would be able to use on both the 40 meter and 20 meter bands using my limited knowledge of antenna building, electronics, and soldering. I wanted to use the antenna in the phone section of the two bands.   The first thing I did was to purchase 100 feet of the 450 ohm window line wire.   Next was to cut it in two equal 34 1/2 foot sections. I intentionally cut it longer than what I thought it should be to allow for tuning.   I then stripped the insulation from one end of both 34 1/2 foot sections of the wire. (I have only shown one above.)   I twisted the two exposed wires together.   I purchased a center insulator to attach the two sides of the antenna. One 34 1/2 oot section would attach to each side of the insulator and 50 ohm coax would be used to feed the window line antenna. I am using 50 ohm coax to feed it to more closely match the 52 ohm impedance of the inverted V.   I then placed the twisted ends through the eye of the insulator.   And twisted the wire braid from the insulator and the antenna together. OK. This is where you may get a little chortle, as my soldering skills might not be very good........but each wire was soldered to the braid and a good connection was confirmed with an ohm meter reading.   I then wrapped the soldered wire connections in black pvc electrical tape.   The outside layer of the electrical tape was the coated with a light coat of PVC cement.   The PVC cement melts the tape and makes for a kind of "heat shrink wrapping". The picture above was taken afer the cement had dried completely.   This is the completed antenna.   HOW DOES IT WORK? Well, I haven't raised it up the push-up pole just yet. I plan on doing that in the next week or so. I will update this site as I get it up and tuned. After some research, I will be tuning the longest wire first (40m) and then the 20m. Check back here for updates. Of course, your comments are welcome and appreciated. Just **CLICK HERE** to send me an email.