[cma-l] UK-wide AM Applications

[Associated Broadcast Consultants]

Overall I don't have a big problem with it - it's reasonably balanced.  I
guess if we are being picky, if they want to talk about multipath fading on
FM, then it ought to also be balanced with night-time ionospheric fading on
AM.

I saw someone mention that they were considering allowing extra power on
AM, which may help viability a bit.  But I did not see it in writing.
Anyone else know for sure?

Glyn

-- 
Glyn Roylance - Principal Consultant
Associated Broadcast Consultants <http://www.a-bc.co.uk/>




On 7 July 2016 at 13:55, Ian Hickling <transplanfm at hotmail.com> wrote:

> Can I draw your attention to Ofcom's  Licence Application announcement of
> yesterday:
>
> http://licensing.ofcom.org.uk/binaries/radio/community/1602026/July16_Invitation_for_CR_applications_on_AM.pdf
> Have a careful read of Section 2, Technical matters - where Ofcom outlines
> some of the differences between the AM service it is offering and the
> better-know FM platform.
> It's pleasing to see that some of the disadvantages of AM against FM that
> we have been flagging up have been accepted and laid out by Ofcom.
> These two sections are particularly interesting:
>
> *2.5 These factors have led to a general move from AM to FM listening.
> Listeners prefer the better audio quality; stereo with a much wider audio
> bandwidth and less impulse noise. Transmitting aerials are much smaller, a
> few metres at most, and can be sited more easily on existing structures and
> rooftops.Broadcasters can process the signal in order to produce the
> ‘sound’ of their station. In addition, other services such as RDS can be
> broadcast within the FM signal. There is also no loss of coverage due to
> night-time interference. Many new radios, especially those with DAB, now no
> longer have the ability to demodulate AM signals. *
>
> *2.6 FM is not a panacea and its more line-of-sight signal propagation can
> lead to areas of poor or no coverage, especially in hilly terrain. In many
> such cases AM services will give much more contiguous coverage. FM can also
> suffer from signal reflections which can cancel out the wanted service. *
>
> The first is a very far appraisal, but doesn't really go far enough.
> The second I feel is more like a knee-jerk reaction to all this irritating
> anti-AM opinion.
> Views?
>
> Ian Hickling
>
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