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Radio Tower

N2OMD

Here is a photo chronicle of the construction of my new ham station at my country place 50 miles outside of Buffalo. My good friend and Elmer, Dave KN2M, was of enormous help in the design and implementation of the electrical and grounding systems for the tower.

The tower kit I purchased was from Heights Towers of Florida.

The first step was the excavation of the hole for the base. Inside the sonotube is a rebar cage and three long threaded rods.

One can also see two PVC conduits which will emerge from the concrete base. The smaller is for electrical power. I had a licensed electrician run a 20 A power line to the base of the tower.

The larger 3 inch  conduit is for my transmission and control lines.


The concrete is poured leaving the threaded rods about 5- 8 inches above the surface.


Here is a closeup of the 3 inch conduit for the transmission lines.


A clevis is mounted on each screw and the base is attached. Throughout the entire assembly process the John Deere tractor with pallet forks was essential for maneuvering each section to the attachment point.



It is important the make sure the legs are vertical


I used the pallet forks on my tractor to lift the next section so it can be aligned with the base.




A liberal amount of grease was used to get the hinge joints together.





The motor and the screw are installed. This is how the tower is raised and folded over. It takes about 10 min to go from vertical to horizontal.



Once the motor drive was installed it was easy to fold the tower over from vertical to 90 degrees horizontal.

Each subsequent section was added until the tower was complete.  The beauty of the fold over system is that the work could be done essentially ground level - or at least step ladder height. While we had a contractor excavate the hole and pour the concrete, the rest of the assembly was done by me and my wife and our trusty tractor.

Below is a photo of me at the base of the tower.


Our country place is in the middle of a windmill farm. Even though the antenna seems huge when I am standing next to it, it is only a quarter of the height of a windmill. Below is a photo of our place with the tower and a windmill for perspective.

When appearing before the zoning board to get a variance for construction of a 75 foot antenna tower, one of the questions asked will concern the visual and aesthetic impact of the tower. I went to the board meeting armed with a similar photo showing that the tower will be barely noticeable compared to the windmills all around us.


The next step before mounting the antenna is installation of the rotator.

Click the link below to view a video test of my rotator controller.

Rotator test 90 degrees

The Antenna is UP!!!

Thanks to Dave KN2M and Peter KB2NMV whose expertise in raising antennas was greatly appreciated!

The antenna is a Force 12 - XR5-JK from JK Antennas. It is a 5 band Yagi antenna with coverage on 10, 12, 15, 17, and 20 meters. Above the Yagi antenna is a Diamond 2m/70cm antenna for UHF/VHf communications.

antenna

tower


Sunday 27 September 2020

Last night the antenna was mounted and this morning I ran cables into the house to my station. With my Comet SWR analyzer, I found peak SWR values less than 1.5 on all 5 bands - 10, 12, 15, 17, and 20 meters. Easily dealt with by the internal antenna tuner on my Icom 7610.

Time to fire up the rig.

One concern was, being in the middle of a windmill park, that the windmills would generate a lot of noise. I am happy to report that even though windmills are turning all around me I have an S1 noise level on all bands.

My first QSO to Amarillo TX on 20 meters was a fluke. I didn’t realize that I had the power turned down to only 10 watts.  But got through anyway.


I just made QSOs on 15 and 17 meters.
4A40CRH in Mexico 17m
YY5RPE in Venezuela 15m.

This is very exciting: bands I didn’t have access to before and clear signals farther away.

I have made two QSOs in Texas, and one each in Florida, Arizona, Mexico, and Venezuela.

Fine business, these JK antennas.


Friday, 16 October

This evening I had my antenna pointed to Alaska and made SSB QSOs on 17 meters with KL7KK in Alaska as well as JR7TKG and JH1MDJ in Japan. I am very excited. Very clear signals to Alaska and Japan with only 100 watts of power!

Saturday, 17 October

Dave, KN2M, help me raise the 40 meter delta loop and the 80 meter dipole. On those bands I made QSOs with Germany, Italy, Brazil, Canada, and multiple stations in the continental US.


Christmas lights on the tower

Winter is approaching, and with it the Christmas season. I have attached three 50 foot long strands of christmas lights to my tower.

christmas lights on the tower