FreeDAB

A place to discuss the latest on the airwaves across Ireland, history & everything in-between

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biggiedan
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Re: FreeDAB

Post by biggiedan » Wed Nov 06, 2019 3:05 pm

mixfm wrote:
Tue Nov 05, 2019 6:47 pm
mixfm wrote:
Tue Nov 05, 2019 6:46 pm
how about in england,,
They are based out of Ireland so i doubt they have any operations in England. With that being said, i wonder how long it will be until a London mux starts up.

drumandbasshead010
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Re: FreeDAB

Post by drumandbasshead010 » Wed Nov 06, 2019 8:04 pm

biggiedan wrote:
Wed Nov 06, 2019 3:05 pm
mixfm wrote:
Tue Nov 05, 2019 6:47 pm
mixfm wrote:
Tue Nov 05, 2019 6:46 pm
how about in england,,
They are based out of Ireland so i doubt they have any operations in England. With that being said, i wonder how long it will be until a London mux starts up.
I'm no expert on this and I'm living in the UK - nor have I ever done- but I wouldn't imagine the current pirates have any interest in setting up a mux. The attitude towards DAB isn't very positive from the pirates' perspective from what I can tell.

drumandbasshead010
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Re: FreeDAB

Post by drumandbasshead010 » Sat Nov 09, 2019 5:12 pm

I meant to say I'm not living in the UK.
It also looks like, unless UCB and Maria somehow manage to stay on the RTÉ mux, the FreeDAB mux may be the only DAB mux in the country soon enough. RTÉ are turning off their digital stations and DAB broadcasts in a bid to reducing costs.

house-every-weekend
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Re: FreeDAB

Post by house-every-weekend » Sat Nov 09, 2019 6:54 pm

No, the UK pirates don't have any interest in DAB. The reception is poor, the range limited and the bitrates very low, so it sound pants audio quality. There is also no clear spectrum in the DAB band since it is clogged up with legal MUXes only. At least in Ireland there is plenty of clear spectrum, but the question is .... who is listening? Not many know about it in Ireland and why would they when FM is superior in all respects anyway

Albert H
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Re: FreeDAB

Post by Albert H » Sun Nov 10, 2019 11:20 pm

London has 5 of the possible 6 "bouquets" in use, so a pirate mux could be possible. My trial sites used a laptop, a few Raspberry Pi with Audio Injector cards, a HackRF One, a filter, a power amplifier (actually an old Band III TV amplifier), and several receivers to take Band II audio off air to stuff into the mux. It's really NOT hard to do these days!

However - the coverage of DAB is sporadic and OFCOM insist on cramming stations in, so their audio quality is abysmal.

I think Stephen Moss was right all those years ago - DAB stands for "Dead And Buried"!
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

biggiedan
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Re: FreeDAB

Post by biggiedan » Mon Nov 11, 2019 3:03 pm

Band 3 is from 174 - 239MHz, London wise the frequencies being used are:

U.DAB (Trial London Minimux): 9A - 202.928 MHz
SDL National: 11A - 216.928 MHz
Digital Radio Group (London 3): 11B - 218.640 MHz
D1 National: 11D - 222.064MHz
Switch Digital (London 2): 12A - 223.936 MHz
BBC National DAB: 12B - 225.648 MHz
CE Digital (London 1): 12C - 227.360 MHz

So correct me if I’m wrong, But to me it seems like there is plenty of spectrum available for quite a few different pirate muxes to start up.

Albert H
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Re: FreeDAB

Post by Albert H » Mon Nov 11, 2019 6:06 pm

Sadly, it looks like all the Bouquets are now in use - any pirates would have to add their own....

It's the same problem as FM pirates had with digitally tuned radios. Listeners used to discover the pirates as they found something "extra" as they manually tuned between stations. When digital tuning arrived, most people would have their radio programmed to the two or three stations they listened to, and wouldn't ever think of scanning the band for anything else....

Adding an extra Bouquet could be done - you'd need a good site and a fair amount of power - but persuading the clueless listeners to re-scan their DAB radios is unlikely to yield many results. The average punter is scared of the idea of tuning a radio - they might "lose" their regular stations! Remember - 95% of the population is pretty stupid.
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

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