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Build the Pennyloop UHF Antenna
Your confusing impedance with resistance, I think. 300 ohm twin lead, does indeed have lower loss than RG-59 coax. If you step up to RG-6 coax, then loss is pretty similar. Line loss can be made up for with amplification at course (ie the antenna). Coax has become the wire of choice due to the preponderance of cable. I started assisting my dad with ota antenna installs, when I was about 10 years old, 2 years of college for electronics technology and returned to continue until my late 20's. We did antennas on towers, on tripod mounts on the roof (my favourite for cost/performance) and in attics (doesn't work well through aluminum siding or metal roofs). We were quite distant from any station, with only a very few to choose from, and our go to, was a 10 element yagi, tuned for the desired...see more »Your confusing impedance with resistance, I think. 300 ohm twin lead, does indeed have lower loss than RG-59 coax. If you step up to RG-6 coax, then loss is pretty similar. Line loss can be made up for with amplification at course (ie the antenna). Coax has become the wire of choice due to the preponderance of cable. I started assisting my dad with ota antenna installs, when I was about 10 years old, 2 years of college for electronics technology and returned to continue until my late 20's. We did antennas on towers, on tripod mounts on the roof (my favourite for cost/performance) and in attics (doesn't work well through aluminum siding or metal roofs). We were quite distant from any station, with only a very few to choose from, and our go to, was a 10 element yagi, tuned for the desired channel.
Keepin' It Simple, the $7 HD Antenna
The Universal Multipurpose Workbench
Multi Level Wooden Car Park Toy and Airport
Pocket Hole Jig
Simple Sheet Metal Brake: No Welding
Very nice and easy to understand. A small brake is something I've wished for. A couple of suggestions, if you decide to rebuild, or up size. I'd splurge on some hardwood, rather than pine, much stronger, but I'd stay with 2 or more pieces laminated, less likely to warp on you. And I'd use T-nuts inset slightly on the underside (I use a speedbore type bit, with the outer points ground off to match the cutting angle. Much stronger than screws. thanks for sharing.
Mobile Workbench With Built-in Table & Miter Saws
Multi-Tool Flip-Top Table
Caramel Apple Cheesecake
Learn to 3D Print in 7 Days with 7 Awesome Projects
3D Printed Insulin Pump Case
Concrete and Wood Slab Table
Teardrop Trailer Aluminum
If I was going for outside use, I'd finish up with a clear casting resin or similar. Preferably something with UV inhibitor on it. A Black only image should last quite a long time. Colors are likely to fade with sun exposure.
Table Saw Restoration
DIY leather tool - Stitching punch
LED "Vacuum" Tubes
3D Printing Class
Rainbow Glitter Skull Makeup!
DIY Air heat exchanger - Made from soda cans and pvc pipe
I like the piece. For future reference, there is a steam bending technique for bending thick timbers. Primarily involves using a strap on the outside of the bend to apply pressure and prevent that side stretching and cracking. Then when you apply bending force, instead of the outside of the bend stretching and cracking, the inner side is forced to compress. Creating a steam chamber isn't at all difficult.
A Marking Gauge You Can't Buy
For rust, Liquid Wrench lives up to its name. I agree about the smell of WD-40. Cheap adjustables are just that. To avoid damage to an adjustable wrench, the movable jaw should be be on the side you would put your hand on the handle to push. And perhaps you misunderstand, I fully support use of the vise.
In my experience, WD-40 is not much of a lubricant or penetrating oil. It's slightly better than nothing, but a real penetrating oil works miracles. In a pinch, kerosene penetrates well. Using 2 nuts is a great technique. Using locking pliers is not, especially for any nut or bolt you intend to use again. Locking pliers often make future use of a proper size wrench difficult. A set of wrenches is well worth the investment, or a oversized adjustable wrench. For really stuck nut, a vice like you used on the locked nuts and a box end wrench on the other, would be my first choices. Well written instructable and the title is fine IMHO.
How to Make a UTP Cable
No one builds with components with only a .1% margin for over voltage, and there is no problem with lower voltages set all. Other components, such as capacitors, also have max voltages. With a circuit built for 12V, you'd see commonly see components rated for 20 to 25V, very rarely as low as 15V. BTW, I'm speaking from college training in electronics and many years in the field.
Motors are not a truly resistave load, rather they are an inductive load. One of the major reasons for electric motors failing, is heat due to increase current during voltage sags. Put an ammeter on a ,motor and drop the voltage. Or increase the load on the motor. Thus the reason we track of over current protection being important for LIon batteries.
Agreed. With motors going slightly over voltage would be better than a not under. Only risk would be if there are electronics controlling the speed and you exceed their max voltage rating.
Nice instructable. I have an older set of cordless tools, store brand, new batteries are special order and ridiculously expensive. I have a newer LiOn drill, but it would be great to revive the other tools. I've considered trying to rebuild the original packs, but upgrading to LiOn cells seems a great idea. thanks
Convert a black & decker cordless drill battery to lithium ion
Convert old cordless tools to Lithium power
The Mystery Braid
Leather Underbust Harness
Upgrading the Lenovo ThinkCentre M600
Industrial Fly Trap
Cherry- 60€ 3D-Printer
Mercury foam teardrop, how to build a foam teardrop trailer. rot proof, well insulated and super lightweight
KOZMO - cool, small sportscar
Soundwave Portable Electronics Workstation
DIY Truck Bed Camper!
The Fantastic Plastic CNC Mill
Make It - Adjustable Taper Jig
Cinnamon Apple Muffins
Cat Adventure and Escape Wall
Simple Belt Sander Blocks
DIY Video Lights
Dust Cyclone made from a Traffic Cone
Wooden, Cyclone Seperator Shop Vac
A Beginner's Guide To Stirling Engines
Photography Light Box Tent
Bed in a Box
Band Saw Log Sled
Universal SmartPhone Car Mount
Make a Five Cut, Big Bowl from an Eight Foot 2x4
Warm winter hat with no fog facecover
Heatless (cold) Toner Transfer for PCB making
Play kitchen in time for Christmas
Electronic Accessory Charging Dock
Water Tank Overflow Notifier with LinkitONE
Cutting Cable With a Streaming Media Box! (XBMC/Kodi)
Door box - Kids toy
Steampunk Tool-Box for the Engineering Guy
Cardboard Wine Balancer
The Plasma Speaker
Circle Skirt Pattern With Illustrator and Calc
Adult Onesie / Jumpsuit Pattern
Build a Proximity Sensor with the Linkit One
4-Way Panel Clamps
Homemade Sculpey Clay
DIY Luxo Jr. Lamp (Pixar Inspired)
19" Equipment Rack for Electronic Instruments
Mini rocket launcher
3D Chocolate Printer (made from LEGO)
Make a Nuckle Joint
Picnic table and bench - 2 in 1
Foldable Stool-step realisation
Glow in the Dark & Back-lit Sign
Transforming Bar Desk
No Bake Microwave Mug Brownies
No solder nylon wrapped phone cable!
How to "Weld" Aluminum Without a Welder
Healthy Frozen Snickers Bars
SaveAqua Washing Station
Powerful Portable Bluetooth Speaker 2x5W
chicken parmesan sandwich recipe
LEDs for Beginners
A Greenhouse for the North
How to Get Rid of Ants (or) How to Kill an Ant Invasion
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