[markemer]

Maybe it’s just because I’m an EE, but I really got into the data modes too. Like did you know how stupid simple old school pagers are to create signals for? You have to make some slight modifications get them into the Ham Bands (or buy a new one, apparently a thing!) but after that it’s just 512 baud FSK.

[MobiusHorizons]

Fascinating! Is there overlap of some equipment with a ham band or do you have to modify the frequency of the equipment? What band do you use? Now I want to try this.

[topspin]

> Is there overlap of some equipment with a ham band or do you have to modify the frequency of the equipment?

There are many cases of overlap. The "upper" pager band is 929-931 MHz. There is a lot of adaptable commercial 900 MHz equipment knocking around. There are also agile transceivers ICs like STM32WL than can tune 150-960 MHz continuous, for example. The lower pager bands are at the lower end of VHF. You can make transceivers at those frequencies from through-hole parts and cheap tools.

The great thing that has emerged recently is low cost RF tools. You can get cheap, hobbyist grade RF instruments for a song today. NanoVNC, TinySA, affordable antenna analyzers and more can do things that cost thousands of dollars only 10 years ago.