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Latest progress on my sat antenna installation can now be found here: N4UFO sat - What's that flying overhead?  Hope you enjoy!


First licensed in 1977 as a Novice at age 14, I have enjoyed many aspects of ham radio. Currently my focus is on chasing DX & awards. To date, I have achieved: 8BDXCC, 9BWAC, TPA, VUCC-6m (325 grids) and VUCC-Satellite (150 grids). On 11-11-11, I was first listed in the DXCC Challenge standings for confirming 1000 band countries. (On my next submission I'll be well over 1600!)

I got back on the air in the summer of 2010 with a new call after a 5 year hiatus. I am QRV on 160m-70cm with a Yaesu FT-847 "Earth Station", using an MH-31 hand mic, Kent SP-1 paddle, HK5A Ham Keyer, a J-38 straight key, an MFJ-929 tuner and a Signalink USB for digital. Also pictured is an Astron SS-25 power supply, an Ameritron RCS-4 remote antenna switch and the rotor controllers for the HF & 6m beams as well as the AZ-EL controller and computer interface for my satellite antennas.


My antenna farm includes a T.G.M. MQ-36 Hybrid Quad on a tripod mounted mast that doubles as a 40m vertical, a reworked Butternut vertical for 80/160m, a modified Hy-Gain AV-18VS vertical for 30m and a homebrew 4 element six meter quad antenna. Off to the right, you can see my new satellite antennas, consisting of a pared down Cushcraft A148-10S and a Cushcraft A43-11S.


The T.G.M. MQ-36 Hybrid Quad is a three element yagi with a diamond shaped quad reflector. It has a reduced physical size thanks to wire coils and capacitive spokes, but therefore has reduced bandwidth. It covers six bands: 20, 17, 15, 12, 10 & 6 meters. The basic elements are the approximate length of those for a 6m yagi and then have a coil and capacitive hat located on both ends of each element for each of the HF bands. The 2:1 bandwidth ranges from 100 khz on 20m, to over 1 MHz on 10m. In between, it is wide enough to cover the whole band on 17 & 12m and over half of the band on 15m. The beam is mounted at twenty-five feet on top of a 28 foot telescoping mast, which is not fully extended. The Rohn H-30 mast is mounted in a 9'4" Rohn tripod and secured with quarter inch Dacron rope to four 2-3/8" fence posts.


The tripod is bolted to wooden railroad ties. As a result, the tripod and mast are electrically insulated from the ground. Considering the height of the antenna, coupled with the top loading capacitance of the beam, I estimated the whole thing should be resonant somewhere near 40 meters. After creating a direct feed point (connection to a tripod leg and an 8' copper ground rod joined to a common radial field) the result is a nice wide resonance right around 7MHz. The SWR of the antenna is less than 1.6:1 across the 40m band. It also appears to be resonant around 14 Mhz and shows an SWR of less than 1.05:1 across the 20m band - The picture on the right shows all the lines going to the shack and HF antennas with toroid chokes to help cut down on common mode RFI.


This is a refurbished/reworked Butternut vertical modified for 160m & 80m. On the left you see rope guys and top loading wires while on the right you can see an added coil and larger capacitors. I have laid out a common radial field for all three antennas that averages 32 radials for each. The thick bermuda grass I have in my yard has made it slow going. I've had to cut through the grass with a trimmer so the wire can be laid next to the ground and then kept in place with wire staples. Note the toroid choke, radial connections and matching coil in the inset. The wire coil is a 'Q' coil and helps match the feedline impedence closer to 50 ohms.


This is a Hy-Gain AV-18VS that I modified for use on 30m only. I removed the coil that came with it, then added a short section of mast at the base to extend the length as well as aluminum wire loops at the top for capacitive loading. I kept the feedpoint at the same location using a crimp style blade termination and a hose clamp. The SWR is 1.2:1 and it works better than the shortened vertical dipole I used previously. It is connected to the common radial field which is well beyond 1/4 wavelength for this band.


I saw plans on the internet for a 6m quad using some items I happened to have left over from other projects; PVC pipe and some fiberglass fence posts from my previous winter's 80/160m above ground radials. Once I had some time, I studied the plans, made a few minor changes to the design, spent about $20 at Home Depot and started working on a 6m quad of my own. I glued the PVC pipe together then drilled holes for the spreaders with the help of a neighbor's drill press. Next I made up a feedpoint on the end of one of the spreaders and wrapped an RF coaxial choke. Then I measured out the wire and cut the proper lengths for the elements. I spent a couple hours the next afternoon assembling it and getting it up in the air. The boom is about 9 feet in length, mounted up about 15 feet off the ground and the antenna weighs around 13-14 pounds. The elements are made from 17 gauge aluminum wire left over from the above ground radial project. It's really performed great over the last year, but alas, I didn't used large enough PVC for the boom and it has sagged as seen in the picture of all my antennas above. I have a 5 element 17' boom yagi to replace it.


After getting back on satellites in 2013 with first an HT and then some homebrew antennas at a fixed elevation, I decided I wanted to build up a full blown set of AZ-EL yagis. I purchased used equipment and got some pretty good deals, but some of it did require refurbishing. I have a Cushcraft A148-10S that I removed the middle section of. (some parts were missing and I just didn't need all ten elements) Across from it is a matching Cushcraft A430-11S. The cross boom is a roughly 5 foot piece of 1.25" EMT and the two masts are 4 foot long pieces of same. The rotator is stated as a Yaesu G-5400B, but in fact, it appears upgraded to a 5600B with the beefier azimuth rotor. In the black box below, there are a couple of Advanced Receiver Research preamps and MFJ-916 diplexers to act as filters. Read more about me putting up the antennas on my new satellite blog: N4UFO sat - What's that flying overhead?


I have a new shack kitty as of this summer... We found this little girl wandering around in the back yard next door and was very friendly. She and our other cat don't get along so well and have divided up the house into separate territories. "Starlight" inherited the hamshack, so I got her a cat tree to watch out the window. Her job is to keep an eye on the birds roosting on the antennas.


My wife N4ICY has spent many hours out in the sun helping with everything from tweaking elements, to pruning wires, digging dirt, untangling ropes, hoisting antennas and general fetching & handing of tools. Yes, my wife helps with antenna work. She also enjoys going to hamfests and chatting with other XYLs. Be jealous, guys, be VERY jealous!


And just in case you were wondering, there are two "UFOs" in Statesville, NC: W4UFO


Hope to work you soon... 73!




1456053 Last modified: 2014-11-19 23:37:53, 9319 bytes

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