Amateur Radio

Building the Gamma Match for 3 Elements Yagi

So you've decided to build the 3 Elements Yagi, you've checked all the diagrams and tutorial video on building the…

7 years ago

Build a 4 Elements Yagi

Material list for building a 4 Elements Yagi 1″ X 0.5″ Rectangular Aluminum tubing for the boom3/8″ Aluminum tubing for…

7 years ago

3 Elements Yagi Lightweight End Mount (Antenna by Panda Build)

Building a Lightweight End Mount 3 Elements Yagi Building a high performance 3 Elements lightweight end mount Yagi antenna. The…

7 years ago

Contact with the North using 5 Elements VHF/UHF Dualband Yagi

Las Piñas to Lupao Nueva Ecija using 5 Elements VHF/UHF Dualband Yagi modulation with Manong Charlie and Manong Leopard from…

7 years ago

Edison Fong – Tri-Band Antenna without Radials

Performance should be comparable to a dipole and should operate on a single feed line. Tri-Band antenna for 2Meters, 1.25Meters,…

7 years ago

Edison Fong (DBJ-2) J Pole Roll Up

Dual band 2 meter / 70 cm J-pole antenna a practical, easy to replicate, “roll-up” portable antenna. Download here

7 years ago

Edison Fong – (DBJ-1) J Pole Antenna

High performance inexpensive dual band antenna for VHF and UHF Download here

7 years ago

Coaxial Cable Attenuation Charts

Coax Attenuation Chart SWR and Power Loss A compilation of some of the most common coaxial cable attenuation. Nominal attenuation…

7 years ago

Power Loss at Various SWR readings and Residual Power

Coax Attenuation Chart SWR and Power Loss SWR (Standing Wave Ratio) affects the power output of your radio. The following…

7 years ago

Schematic Diagram QYT KT8900_M (Ver: 1.0)

Schematic diagram for QYT KT8900 Juentai JT-6188 aka MP300, 8900miniVHF / UHF Compact Mobile Frequency Range 136-174 / 400-480 MHz…

7 years ago