Roberts DAB Radios

We have recently bought two new DAB radios.

The first was a Roberts Ecologic 1. We bought this for the house we own in Wells-next-the Sea in Norfolk.

This is an area where we are told that DAB radio signals are not available (http://www.ukdigitalradio.com/images/coverage-map.gif) but with the Ecologic 1 we are able to get good signals from two multiplexers and one more when the radio is upstairs. By comparison, my older Sony XDR-S55 radio does not get anything there on DAB.

The Ecologic 1 is a small DAB/FM radio with ½ Watt audio output. This is fine for normal listening, but is not really powerful enough for use in the kitchen when there is lots of background noise. Otherwise, it is a very good radio with excellent mono (stereo with headphones) sound quality. It is well designed and very easy to use. The only thing I don’t like is that it has push-button volume control, but this is a matter of personal preference.

The Roberts Unologic DAB / FM radio is a bit larger but with 1 Watt audio output it is better for use in normal areas. This radio also has excellent sensitivity, but I have not yet done a side-by-side comparison. The Unologic has an analogue volume control, which I like. The controls are large and easy to use so it would be suitable for old or infirm people.

DAB radios eat batteries, but at long last, a DAB radio designer has realised that we don’t want to run our radios from mains power or change the batteries every 10 hours or so. The Roberts Ecologic 1 and Unologic both have built-in battery chargers so can be run on AA alkali batteries (if you are very rich) or rechargeable batteries. The only criticism I have of the design is that it is not possible to charge the batteries while listening.

All round, these are both excellent radios and well worth the recommended price of £60. It is particularly suitable if you want to use it in a poor signal area.

DAB Radio - Switching off FM and AM.

I have responded to OFCOM's consultation on the UK Government's Digital Radio Action Plan. (DRAP) - see the 12th July blog entry here.

Sony S55 FM/DAB Radio

Essentially, the Government wants to switch off FM radio, so they can sell the spectrum. The planning document makes it very clear that DAB radio will never cover as well as FM and millions of people will loose radio services they currently enjoy. For example, if you get Classic FM now on FM, but you are 'not supposed to' (whatever that means), then you may not get it on DAB after switch over.

Another example: if you get stations on FM radio from an adjacent area (for example Radio Kent in SE London) you will loose that. This is important if you are a commuter and want to know what's happening in the area you are travelling in to as well as your own area.

The OFCOM DAB radio consultation closes on 14th September 2011 so, if you care about your broadcast radio service, download the form now and send it back to OFCOM. http://stakeholders.ofcom.org.uk/consultations/dab-coverage-planning/

Dave

FM Radio Switch Off

OFCOM are now planning the FM radio switch off (and AM radio switch off) and turning the whole of radio broadcasting in UK over to DAB. Their consultation is tucked away on an obsure part of their web site:

http://stakeholders.ofcom.org.uk/consultations/dab-coverage-planning/

This is clearly a cynical ploy to make sure they only get comments from industry insiders who want the switch over to go ahead. If you are opposed to the FM switch off, you should comment on this consultation and here are a few reasons why you should:

• DAB does not work - the UK has chosen the wrong system (DAB Plus is better, but far from perfect) so you are likely to wind up with a poorer radio service than you currently enjoy on FM.
• DAB radios eat batteries, so it will cost you far more and we will damage the environment.
• If you enjoy local radio coverage from an adjacent area, that does not officially cover where you are, you will loose this (that's what OFCOM say).
• Extending DAB nationally requires lots of new transmitters. This is never going to happen so large areas will be left with no coverage. Spend on new transmitters will be based on population covered, fine if you live in a big city, but what happens when you go on holiday?
• Speaking of which, UK DAB does not work in foreign countries and few countries are following UK to rush headlong into digital broadcasting.

Go to the OFCOM site now and let them know your thoughts. I am not opposed to DAB, it has some merits, but I am opposed to switching off FM and AM broadcasting in UK.
Dave

DAB Radio

Just to make a change from Amateur Radio topics, this post is about domestic digital, DAB Radio.

Those of you listening to the BBC, in UK, can hardly have missed the adverts encouraging us all to rush out and buy a DAB radio for Christmas. There is of course a hidden agenda - the Government is just itching to grab back the FM broadcast band so it can sell it off. The have set a threshold of 50% of all households owning a DAB radio so they can name a date when FM transmissions can cease - even this very low criterion has not been met yet. These are my thoughts:

• The UK Government have chosen the wrong system for DAB. They should have chosen the newer DAB Plus, which is used elsewhere in Europe. DAB and DAB Plus are not compatible so if they try to adopt DAB Plus, then all existing radios will be useless.
• In my experience, DAB offers no better quality than FM, provided the signal strength is good.
• DAB radios eat batteries so realistically have to be run from a mains power supply (My Sony XDR-S55 DAB radio is particularly bad, it runs off AA batteries and draws 200mA, which means about a 6-hour battery life. To make matters worse, this radio has an FM band but it continues to draw 200 mA even when switched to FM).
• Most of the country, by area, either cannot receive any DAB signal or can only get a few stations. So it is not clear to me how DAB can be viable for car radios or those who live in remote areas. I did not find much evidence of a plan to improve this coverage rapidly.
• Your DAB radio will not work abroad, apart from in a very few countries that use the UK system.

I do not want to be totally negative about DAB - there are some positives. If you live in a good signal area then you will get a lot more stations. Whether they are worth listening to is a matter for you! Some radios also give a text display, giving limited information about the programme you are listening to.

So should you ask Santa for a DAB radio in your stocking? If you are sure you live in a good signal area, you want the extra stations and you don't mind running the radio from the mains, then go ahead. BUT - do make sure your retailer will give you a refund if your radio does not receive the stations you expect - the coverage maps can sometimes be optimistic. You also need to be prepared for DAB to be phased out in favour of DAB Plus. This is not likely, in the short term, but you will almost certainly need to invest in a new radio if this happens.

I do not have any experience of DAB car radios, but I would be quite sceptical about their performance if you ever travel far from the large urban centres. Please post a reply if you use DAB in your car.