Subj : Re: packet radio
To   : All
From : dotslash
Date : Tue Aug 30 2022 08:31 am

On 29/08/2022 18:00, Vk3jed wrote:
> -=> On 08-27-22 10:13, dotslash wrote to All <=-
> 
> Yeah they're turning up everywhere. :)  Wonder if some importer will ever get
> one type approved for UHF CB, they cartainly have the capabilities to run
> there. :)

I forgot that you have UHF CB in Oz. That is actually so cool! It would 
have been excellent if we could harmonize the used spectrum over the 
world, but 400-500 MHz is a busy place. Here in the UK 476-477 MHz (AU 
CB) is used for maritime radio, so no chance for us chewing off that 
spectrum for public use.

The closest we have would be PMR446, but the bandwidth is very narrow 
between 446.0-446.2 MHz for narrow-band FM use. This include analog (16 
channels only) and digital (32 channels), both business (high powered up 
to 5w) and private (max 500mw). You'll find baby monitors (illegal!) and 
blister-pack radio toys (possibly legal) also on this frequency range, 
so in cities this can be a cacophony. The only CB we have here is on 
11-meters, which now at least have wide-band FM as a mode in addition to 
AM and SSB.

I hope you in Australia use that bandwidth for UHF CB for all it is 
worth, so that there is no chance of it being withdrawn from public use! 
Big business have been chipping away at the spectrum over here in Europe 
for decades now, so we don't have what we used to have even as recently 
as 10 years ago.

73,
Jan (M7HNK)

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