On today’s episode, I will go through my slides on my presentation for Ham Radio University, which I normally do every year. This is my practice run for the presentation that I gave at HRU on January 8, 2022.  If HRU publishes the presentation, we will follow up with a link. This presentation is for those who are new to the scanner radio hobby, or need a quick reset and want to have a bit of a refresher on some scanner radio topics and terms. If you need more help with your scanner, you can book me for a 1 hour tutoring session at www.scannerschool.com/tutoring What You Need To Know We use scanners instead of two way radios for scanning because: Scanners typically have a much faster scan rate Have better memory management Scanners have a larger frequency range than most two way radios Scanners can typically support multiple modes and technologies There are three main types of transmitting and receiving: Simplex: Single Frequency - point to point Mostly used on Fireground and tactical channels Duplex: Two Frequencies – point to poing Radio 1 Tx’s on one freq where Radio 2 Rx’s Radio 1 Rx’s where Radio 2 Tx’s Repeaters: Two Frequencies All radios Tx on the repeater input frequency All radio Rx on the repeater output frequency Gives a large footprint on radio communication Mostly used on dispatch frequencies Analog is the most common transmission type that we could use Used by Aviation, Ham, Rails, Marine, etc Digital has better spectrum usage Typical Digital Modes in scanning are: P25 DMR NXDN (TETRA is used Outside the US. No Scanner can Rx TETRA) Trunking Improves Spectrum Efficiency Common Trunk Systems are: Motorola Type II EDACS LTR P25 DMR NXDN Many users can be on a trunk system and voice channels are distributed “on demand” If a group is not talking, they do not tie up a voice path All users listen for commands on a control channel and only move to a voice channel when told to by the control channel   ==================================== ? Join our new Scanner Radio Community ==================================== Join our FREE Discord server and connect with other Scanner Radio Users! By using Discord, a free, multi-platform community portal, you can now be part of the Scanner Radio Discussion! Chat real time, share photos, ask questions, and give feedback to other's in chat. ? https://www.scannerschool.com/discord   ==================================== ? Check out our online courses ==================================== Our free Software Defined Radio course will have you up and running with a SDR in a weekend. Upgrade to our Advanced Course, and learn how to setup SDR Software like a pro. ? https://www.courses.scannerschool.com   ==================================== ⚠️ I want to answer your questions ==================================== I am always looking to answer your scanner radio question. If you have a question you'd like answered, please leave me a voicemail with your question: ? 516-308-2885 ? https://www.scannerschool.com/ask   ==================================== ? Thank you Patreon Supporters ==================================== Thank you to all monthly Patreon Supporters. Supporting the podcast can be done for as little as $1 per month. Supporters at the $3 and $5 level will receive the podcast without the middle commercial break. Supporters at the $5 level not only receive the podcast early, but they also get access to discount codes, monthly zoom meetings, and Squelchy sticker packs. ? Join our Patreon program at https://www.scannerschool.com/patreon   ==================================== ? Subscribe to our growing YouTube Channel ==================================== We are live once a month on YouTube to answer your questions. 2022 will be the year of Video for Scanner School Be ready for the upcoming videos by subscribing now to our YouTube channel ? https://www.scannerschool.com/youtube   ==================================== ➡️ Follow Scanner School on Social Media =============