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Have you ever wondered how you can send and receive emails over radio frequencies, without relying on the internet or cellular networks? If you are a radio amateur, a disaster relief worker, or simply an enthusiast of off-grid communication, you might be interested in learning about Winlink.In this article, we will explore the benefits of using Winlink for radio email communication, especially in situations where the internet is not available or reliable. We will also discuss the applications of Winlink for emergency and disaster relief communications, as well as for personal and recreational use.In this article, I will provide a step-by-step guide on how to use Winlink Express, the most popular client software for Winlink, to connect to the Winlink Hybrid Network via radio message servers (RMS). I will cover the system requirements, the installation and configuration process, the supported modes and frequencies, and the basic operations of sending and receiving messages.In this article, I will show you how to use Winlink Express to connect directly to other Winlink Express or Airmail clients via radio frequencies, without relying on the Winlink Hybrid Network or the internet. This is called peer-to-peer connectivity, and it can be useful for local or regional communication, as well as for testing and experimenting with different modes and frequencies.Setting up Icom IC-705 for Winlink operation with Vara FMTesting Winlink from inside hotel roomIn this series of articles, I will explore the benefits, features, and applications of Winlink, as well as show you how to use it for both RMS and peer to peer connections. Whether you are new to Winlink or want to improve your skills, this series will provide you with valuable information and tips to get the most out of this amazing technology.