Scanner School - Everything you wanted to know about the Scanner Radio Hobby

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 use...

Do you program your scanner with FM or FM Narrowband? 🤔

Find out why the right choice matters in our latest Scanner Radio University episode.

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🛒  Check out our new Merch!

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Squelchy opened his own store selling Scanner School merchandise!

Show your love for the Scanner Radio Hobby and Scanner School.

Pick up a hat, shirt, bag, or mug and help support Scanner S...

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?

For many, this is a common occurrence when they try to listen to a P25 Simulcast site on their scanner radios.

Let...

Every month I answer your questions on the podcast.

If you have a question you would like me to answer, please leave me a voicemail at 516-308-2885 or by visiting www.scannerschool.com/ask

This month, we are pulling questions that were asked via Facebook Messenger.

▶︎ How do I log P25 Radio IDs?

▶︎ Where can I find a manual for a Uniden BC950XLT?

▶︎ How can I fix a battery door on a SDS100 that will not close?

▶︎ Where can I fin...

The Nextel Conundrum:

Originally established as a convenient communication solution for small businesses, Nextel swiftly expanded its services to include cellular telephony. 

However, the positioning of Nextel within the RF spectrum, sandwiched besides public safety frequencies, combined with its network built for capacity, led to unprecedented challenges. 

The dense clustering of Nextel sites interfered with public safety radi...

Once upon a time, we only had analog trunked radio systems.   These systems all had analog voice talk groups.

These systems included Motorola Type I, Motorola Type IIi, Motorola Type II, EDACS, and LTR systems.

Today, we are living in a digital trunked environment, where there are no analog voice channels.  All voice is done using a form of digital modulation.   These systems include P25, DMR, and NXDN.

But, we had an in between.  ...

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.

Systems that require every frequency be programmed into our scanners in their designated sequence are Logical Channel Numbered systems and include EDACS, LTR, and all flavor...

Every month I answer your questions on the podcast.

If you have a question you would like me to answer, please leave me a voicemail at 516-308-2885 or by visiting www.scannerschool.com/ask

Don't forget to join us on YouTube on the first Tuesday of every month for our live Q&A session.   Click here to Subscribe!

Questions answered on this week's podcast

1. Jenny has a question abou...

Did you know that trunked radio systems are just like an orchestra?

There are several parts in each that work in harmony.  

In our latest podcast, we compare the two to make it easier for you to understand exactly how a trunked system works.

We also dive into why trunked systems are an excellent way of utilizing the limited radio frequency resources.

YOUTUBE LINK TBD

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