transmission lines

TX Four Square Antenna - A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.

Conventional Use of Transmission Line - ordinary transmission line theory

Antenna current meter - How to measure antenna feed balanced lines currents

75 ohm to 50 ohm Transformers - Transmission Line 75 ohm to 50 ohm Transformers

Placement of a Mobile Antenna - Basic guidelines for proper placement of an amateur radio mobile antenna

Dish antenna - Dish antenna and its theory and design for high performance applications such as satellite transmission and reception as well as microwave links.

Parabolic Reflector or Dish Antenna - The essentials of the parabolic reflector or dish antenna and its theory and design for high performance applications such as satellite transmission and reception as well as microwave links.

Screw in guy anchors and guy lines - Common causes of failues, due to wrong clamps. About Guy Anchors

Parallel Lines Contest Group G4LIP G8P - The parallel lines contest group - g4lip/p

American Airlines Amateur Radio Club - Tulsa american airlines amateur radio club the american airlines amateur radio club

Eletec Broadcast - EB Broadcast provides Audio, Studio and Transmission Equipment, FM Transmitter, rf power amplifiers, audio processor for radio stations.

Starman Electric - Starman Electric manufactures DataBridge wireless RF modem modules for easy point-to-point wireless data transmission of analog, digital, and serial RS232 UART signals.

Understanding the basics of SSB transmission - Fundamentals of operating on single sideband

Tiny Track I - Tiny Track-I is a simple unit offering the transmission of your position-data (as mobile etc) in APRS , just by using a VHF and a GPS.

G6GVI's data transmission page - WinDRM for rapid data transmission over radio channels. A quick-start guide by Ross G6GVI and Jack G8HIK

Making the Most of your PSK31 Signal - Adjusting audio output of your soundcard to obtain a perfect PSK signal from your transmission. A project to help you tuning your PSK31 emission.

Bonito RadioCom Onlineshop - Whether Hamradio software, Transceiver or Receiver, WiFi sticks as well as practical accessories. Bonito have everything around the topic Hamradio.

JT65-HF - Download JT65-HF Amateur Radio software for reception/transmission of JT65A protocol with an emphasis upon its usage in the High Frequency Amateur Bands.

I-PSK31 - Ipsk31 is a modem based on Bpsk31 protocol for ham radio digital transmissions. Can be used on IPhone and Ipod Touch, and let you transmit and receive PSK31 directly from your Apple device.

iPad iPhone HF Weather Fax Decoder App - HF Weather Fax lets you receive marine weather radiofascimile transmissions on your iPad, iPhone and iPod Touch. Just connect it to a shortwave radio tune in a weather fax frequency, and watch the images come in.

Design Guidelines for JFET Audio Preamplifier Circuits - Design Guidelines for JFET Audio Preamplifier Circuits By Mike Martell N1HFX

Non-relay instant RF Switching - Coax lines to do the RF switching. The advantages are instant switching, no power wasting DC control circuits.

R.F. Current Meter - This R.F. current meter was developed to assist in measuring line currents in balance feed lines as used in the All Band HF Antenna.