Re: Turn Your Radio On ...

On Sun, 2 Feb 2025 10:20:29 +0000, The Natural Philosopher wrote:

PAL crystals were used in some markets to be compatible with the TVs
but never had the off label reach.

 
I don't actually understand that statement

Several home computers had US and European versions and would use the PAL
or NTSC crystals to be able to generate video. However, at least in the
US, NTSC crystals were dirt cheap and used in applications that had
nothing to do with TVs. One example is DTMF decoders.

https://www.electronics-diy.com/dtmf-decoder-using-mt8870.php

Unless you had some compelling reason when building a Z80A board using a
crystal you could pick up at RadioShack was the way to go. It was also a
handy frequency for the 80M ham band, and 40M with a doubler.

Maybe PAL crystals were used like that in Europe. No clue.