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How to improve your X-10 RF reception
Chassis Mount UHF SO-239 Coax Connector (Radio Shack item # 278-201)
F to SO-239 Adapter (Radio Shack item #278-258C)
1/16" thick Brass Rod (approximately five feet length)
#4 Ring Crimp Lugs
4-40 Screws, lock washer, and nuts (four sets)
Solder Iron and Solder
Hacksaw (What would be a HA project without one of these)
We will need to calculate the one-quarter wavelength for 310 megahertz. The formula WAVELENGTH EQUALLS THE SPEED OF LIGHT DIVIDED BY THE FREQUENCY is used to calculate the total Wavelength, this will then be divided by four to determine the "one-quarter' wavelength.
Speed of Light = 1.180 E10 inches/sec
Wavelength = 310 E6 hertz
So plugging these numbers into the above formula yields:
Wavelength = 1.180 E10 / 310 E6, which equals an overal wavelength of 38.07 inches. We must then divide this number by four to obtain the one quarter wavelength distance (38.07 / 4) of 9.5 inches.
Assembling the Antenna:
First take the brass rods and cut to five each 9.5 inch lengths. Sand one end (this will be the solder end).
Solder one rod into the center of the chassis mount connector as shown.
Then insert one end of the brass rod into the #4 ring crimp lug and solder in place as shown:
Do this for FOUR of the rods (one end only).
Attach the assembled crimp lug/rods to the chassis connector's holes using the 4-40 hardware. Insure a secure/tight fit onto the connector. Bend the lug/rods to a 45 degree angle "away" from the center top rod as shown.
Repeat this assembly for the other three rods.
The antenna is now ready for mounting. Mount "upside down" in a location such as an attic and insure the coax cable does not go "thru" the antenna as shown.
Use a coax cable such as RG6/U and F connectors, connect to the MR26a. I'm running approximately 50 feet of coax between my MR26a and antenna with no problems.
Test out your new increase coverage.
Well, thats it. You just completed this project that increased your x-10 receiver coverage for less than ten bucks in parts.