160 Meter Coaxial Inverted L

To give ourselves a better grasp on inverted l s we will compare an l over an fcp with a better understood vertical over an fcp.

160 meter coaxial inverted l.

And on a small lot that swr meter is very likely looking to a 160 antenna through an electrical quarter wave ish length of 50 ohm coax 60 80 100 feet or 20 25 30 meters. Tnx for reading bob n4jte. In fact k2ff w5ue and our partner in crime john w4ii now k0xx had combined for a 2 finish worldwide in our category in the 2016 arrl 160m cw contest from glenn s qth on his newly installed l. When using 12 5m telescope will probably impedance emitter 12 ohm but adds to the overall impedance of the impedance of the natural.

That was all the convincing i needed so we started scouting locations on my property in lumberton to duplicate what we had done for glenn. This antenna is used on 160 meters only and is coaxial cable fed. Glenn had recently installed a 160m inverted l at his qth in ocean springs and it was performing quite well. Two days after i posted this my 160 meter inverted l antenna was taken out in a storm.

I mainly use it to work fellow pvrc club members late in hf contests. Coaxial inverted l for 160 meters by john n9lye few amateurs have room for full sized vertical antennas on 160 meters. It worked well in it s only test and will be reconstructed. Due to the short length this will probably continue as my only 160 meter antenna at this qth.

Diagram of 160 80 meter inverted l optional method instead of using the mast as the vertical radiator set the coil about 2 feet out and away from the mast at the top and use wire as the vertical radiator instead of the mast and then drop and terminate the vertical radiator wire in the pvc coupling where it is terminated with the coax center. I also have a loop on ground that i can use for receive with reduced noise levels. For many years i used a simple wire inverted l and a tuner to get on top band just like many others before me. S uvedenými rozmermi antena rezonovala and 1850khz.

An efficient 160 meter inverted l will have a feedpoint with a natural 20 35 ohm r where x 0. In an instant that all changed. This will expose differences advantages and disadvantages. Try it out the inverted l is as cheap as it gets and will give you a horizontal and vertical sky wave easily matched to coax.

160 meters separates the men from the boys see you there. The geometry actually resembles an inverted l that has partially fallen over in other words a lazy l. The dimensions of the inverted l antenna for 160 meters antenna dimensions are clear from the diagram. Our comparison l is an fcp at ten feet 3m with the vertical length a very average 55 feet 17m over the fcp setting the l s bend at 65 feet 20m.