DAB Rig ?

Everything technical about radio can be discussed here, whether it's transmitting or receiving. Guides, charts, diagrams, etc. are all welcome.
Post Reply
XXL
no manz can test innit
no manz can test innit
Posts: 183
Joined: Mon Sep 02, 2019 11:06 am

DAB Rig ?

Post by XXL » Tue Oct 27, 2020 3:56 pm

Is a DAB tx possible?

Iv seen a few threads talking about cheap dab gear. obviously the range is no where near as good as FM, but is it possible ?

Albert H
proppa neck!
proppa neck!
Posts: 1710
Joined: Tue Apr 05, 2016 1:23 am

Re: DAB Rig ?

Post by Albert H » Thu Oct 29, 2020 12:05 pm

It's possible, but probably not worth doing. There are six "bouquet" frequencies possible at present. In most bigger cities, all six are in use, so there's nowhere to add an additional bouquet. Each bouquet is 6 MHz wide - the width of an old analogue TV channel - and can convey several stations (the number is decided by the bandwidth / data rate that each station wants to use). If you're going to do it, you need to get together with a bunch of other stations to provide the content.

The "open source" DAB solution that's freely available requires multiplexer hardware, good quality sound cards, a pile of Raspberry Pis, and a moderately powered PC to assemble the data stream to be conveyed to the transmitter. The cheap transmitters that are available are in the region of £600 for 50mW, and amplifying it requires a highly linear amplifier with a very precisely defined RF bandwidth and precise filtering. Your average rig-building solder-jockey wouldn't have a clue.

To be honest, DAB should stand for "Dead And Buried". It's a 40-year-old technology, using MP2, and it's surpassed in coverage and quality by simple web streams. You can put your station on the 'net, using one of the "unlimited" services (about £30 - £40 per month), and get listeners all over the world. If you broadcast live, and have a means of the listeners getting in touch with the studio, you can generate quite a following.

My 'net station has huge audience figures, globally, and isn't illegal - we even pay the Performing Rights fees. If someone chooses to put our web stream into a transmitter, that's fine by us - it's nothing to do with us, so we can't be touched for it! We also provide content for a couple of American radio networks (and charge them for it), and it's still fun to do!
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

TGillies
who u callin ne guy bruv
who u callin ne guy bruv
Posts: 46
Joined: Sat Feb 14, 2015 1:28 pm

Re: DAB Rig ?

Post by TGillies » Thu Oct 29, 2020 3:20 pm

Albert H wrote:
Thu Oct 29, 2020 12:05 pm
My 'net station has huge audience figures, globally, and isn't illegal - we even pay the Performing Rights fees. If someone chooses to put our web stream into a transmitter, that's fine by us - it's nothing to do with us, so we can't be touched for it! We also provide content for a couple of American radio networks (and charge them for it), and it's still fun to do!
Link?

radium98
proppa neck!
proppa neck!
Posts: 514
Joined: Fri Aug 26, 2016 7:01 pm

Re: DAB Rig ?

Post by radium98 » Thu Oct 29, 2020 7:23 pm

100%

User avatar
g33ky
no manz can test innit
no manz can test innit
Posts: 165
Joined: Tue Dec 03, 2019 10:39 am
Location: Wirral

Re: DAB Rig ?

Post by g33ky » Fri Oct 30, 2020 3:12 pm

FreeDAB did this, so it's possible if you have the effort to do it. Hit up http://wiki.opendigitalradio.org/Main_Page for some information, it's an open-source DAB project. But like Albert said, it's only really worth it for tinkering value, since a) covering a wide area isn't as simple as FM and b) no-one re-tunes their DAB that often, if at all, so next to no-one would pick you up.
FM for lyfe!

XXL
no manz can test innit
no manz can test innit
Posts: 183
Joined: Mon Sep 02, 2019 11:06 am

Re: DAB Rig ?

Post by XXL » Fri Oct 30, 2020 9:27 pm

Yeh Albert what’s the link for your radio ?

Albert H
proppa neck!
proppa neck!
Posts: 1710
Joined: Tue Apr 05, 2016 1:23 am

Re: DAB Rig ?

Post by Albert H » Sat Oct 31, 2020 3:06 am

XXL wrote:
Fri Oct 30, 2020 9:27 pm
Yeh Albert what’s the link for your radio ?
It's not mine - I just make it work!
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

User avatar
Undercover Neckz
no manz can test innit
no manz can test innit
Posts: 230
Joined: Thu Aug 21, 2014 11:23 am
Location: Northolt

Re: DAB Rig ?

Post by Undercover Neckz » Sat Oct 31, 2020 3:28 am

Albert H wrote:
Thu Oct 29, 2020 12:05 pm
My 'net station
Albert H wrote:
Sat Oct 31, 2020 3:06 am
It's not mine
:tup :roll: :tup

Dennis99
who u callin ne guy bruv
who u callin ne guy bruv
Posts: 20
Joined: Sun Feb 01, 2015 4:05 pm

Re: DAB Rig ?

Post by Dennis99 » Sat Oct 31, 2020 8:42 am

I've done it to show another forum, but as was said I only tinkered. :whistle


XXL
no manz can test innit
no manz can test innit
Posts: 183
Joined: Mon Sep 02, 2019 11:06 am

Re: DAB Rig ?

Post by XXL » Sat Oct 31, 2020 5:10 pm

Albert H wrote:
Sat Oct 31, 2020 3:06 am
XXL wrote:
Fri Oct 30, 2020 9:27 pm
Yeh Albert what’s the link for your radio ?
It's not mine - I just make it work!

Ok then. What’s it called. I’ll have a listen.

LeeCavanagh
who u callin ne guy bruv
who u callin ne guy bruv
Posts: 49
Joined: Sat Feb 18, 2017 5:56 pm

Re: DAB Rig ?

Post by LeeCavanagh » Sat Oct 31, 2020 10:08 pm

Albert H wrote:
Sat Oct 31, 2020 3:06 am
XXL wrote:
Fri Oct 30, 2020 9:27 pm
Yeh Albert what’s the link for your radio ?
It's not mine - I just make it work!
D0nt you also present an album show on it?
Yes, what’s the link, either way.
be yourself on purpose

radium98
proppa neck!
proppa neck!
Posts: 514
Joined: Fri Aug 26, 2016 7:01 pm

Re: DAB Rig ?

Post by radium98 » Sun Nov 01, 2020 7:02 am

Undercover Neckz wrote:
Sat Oct 31, 2020 3:28 am
Albert H wrote:
Thu Oct 29, 2020 12:05 pm
My 'net station
Albert H wrote:
Sat Oct 31, 2020 3:06 am
It's not mine
:tup :roll: :tup
hhhhhhh :lol: :shock: :roll:

Albert H
proppa neck!
proppa neck!
Posts: 1710
Joined: Tue Apr 05, 2016 1:23 am

Re: DAB Rig ?

Post by Albert H » Mon Nov 02, 2020 1:08 am

It's partially mine!

My voice appears occasionally......
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

SD-E1102
Neckmin
Neckmin
Posts: 96
Joined: Tue Aug 26, 2014 11:19 pm

Re: DAB Rig ?

Post by SD-E1102 » Mon Nov 02, 2020 2:14 pm

Can I add it to the internet stations list we have?
Pirate Radio's not a problem, it's a solution

ronald001
big in da game.. trust
big in da game.. trust
Posts: 67
Joined: Sun Jan 17, 2016 1:49 pm
Location: Netherlands

Re: DAB Rig ?

Post by ronald001 » Mon Nov 02, 2020 3:10 pm

It can be done easily - all you need is an EasyDAB modulator, Raspberry pi with MMB tools installed.
An simple amplifier can be build with for example an Aliexpress board and a mitsubishi mosfet


Post Reply