'Long distance communications' presentation slideshows

Discover the Magic Of HF Radio

Discover the Magic Of HF Radio. Welcome to Worldwide Communications. This presentation is designed to introduce the new or recently upgraded ham to HF radio. . Welcome to Worldwide Communications. The information presented here is very general. . Welcome to Worldwide Communications.

2.48k views • 205 slides

Discover the Magic Of HF Radio

Discover the Magic Of HF Radio. Welcome to Worldwide Communications. This presentation is designed to introduce the new or recently upgraded ham to HF radio. Welcome to Worldwide Communications. The information presented here is very general. Welcome to Worldwide Communications.

2.24k views • 205 slides

Discover the Magic Of HF Radio

Discover the Magic Of HF Radio. Welcome to Worldwide Communications. This presentation is designed to introduce the new or recently upgraded ham to HF radio. . Welcome to Worldwide Communications. The information presented here is very general. . Welcome to Worldwide Communications.

2.46k views • 192 slides

Chapter 1 Communication Networks and Services

Chapter 1 Communication Networks and Services. Network Architecture and Services Telegraph Networks & Message Switching Telephone Networks and Circuit Switching Computer Networks & Packet Switching Future Network Architectures and Services Key Factors in Network Evolution.

1.43k views • 82 slides

Chapter 1 Communication Networks and Services

Chapter 1 Communication Networks and Services. History. Network Architecture Evolution. Telegraph Networks Message switching & digital transmission Telephone Networks Circuit Switching Analog transmission ? digital transmission Mobile communications Internet

762 views • 53 slides

Radiation, Insolation, and Energy Transfer

Radiation, Insolation, and Energy Transfer. Solar Radiation: Sun to Earth. Speed of light: 300,000 km/second (186,000 miles/sec.) Distance to Earth: 150 million km (93 million miles) Radiation reaches us in about 8.3 minutes. Radiation.

619 views • 25 slides

480 views • 20 slides

310 views • 17 slides

Long Distance Communications

Long Distance Communications. Carriers and Modems. Sending Signals Across Long Distances. Signal Loss Resistance to the electrical signal in copper wire causes small amounts of electrical energy to be converted into heat. Sending Signals Across Long Distances. Continuous Oscillating Signal

163 views • 6 slides