30Dec 2025 by Hazel No Comments
FDMA and TDMA for Beginners

FDMA and TDMA for Beginners

Podcasts
Digital modes, like P25, NXDN, DMR and others will use FDMA, TDMA, or both allow multiple transmissions to share a single frequency at the same time. FDMA or Frequency Division Multiple Access divides a current carrier frequency into multiple parts, allowing for multiple users to operate on the same time on the same frequency. TDMA or Time Division Multiple Access divides a current transmission over time, allowing for 2 or more users to share a the same frequency at the same time, depending on the digital protocol that is used. (more…)
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16Dec 2025 by Hazel No Comments
Simulcast – How to Stop the Pain

Simulcast – How to Stop the Pain

Podcasts
Imagine knowing that your scanner radio has a full signal, but you can't hear anything. Maybe you're listening to a p25 trunk system,  but you can't listen to any of the activity. You can see your scanner is trying to go to a voice channel. It's trying to work.   But you hear nothing. How frustrating does this sound? (more…)
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11Nov 2025 by Hazel No Comments
LCN vs CC Only Trunked Systems

LCN vs CC Only Trunked Systems

Podcasts
There are two distinct flavors of trunked radio systems that we need to be aware of when programming our scanners. There are systems that require that every frequency for each site be programmed into their pre-determined channel number, and those that do not. (more…)
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