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<DIV><FONT size=2 face=Tahoma>Again, you would think that if Ofcom wants to get
full value from this trial, it would be checking the performance of a few
different amplifiers in the field, rather than using only one sort of kit
throughout. Practical trials of performance and reliability
of a few off-the-shelf amplifiers is exactly the sort of
useful experience that could come from a trial like this, and be uneconomic
for any individual station to do. That would be a real service to the industry,
rather than insisting on multiple tests of proven technology such as feeding
multiple programmes sources to the transmitter site, which will probably yield
little that we don't already know.</FONT></DIV>
<DIV><FONT size=2 face=Tahoma></FONT> </DIV>
<DIV><FONT size=2 face=Tahoma>I guess one option for a potential pilot user who
successfully argues for higher power would be to use a multi-antenna array on
the end of the standard-issue Ofcom kit - eg if the kit is based
on a single dipole, you could use four stacked dipoles to take it up
to around 400-500W erp. That would probably be cheaper than a fresh higher power
amplifier, and would be cheaper to run, though it would be getting on
for 6 metres high, so it would need a decent sized support
structure!</FONT></DIV>
<DIV><FONT size=2 face=Tahoma></FONT> </DIV>
<DIV><FONT size=2 face=Tahoma>Alex</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=office@fantasyradio.co.uk
href="mailto:office@fantasyradio.co.uk">Fantasy Radio Office</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=transplanfm@hotmail.com
href="mailto:transplanfm@hotmail.com">Ian Hickling</A> ; <A
title=cma-l@mailman.commedia.org.uk
href="mailto:cma-l@mailman.commedia.org.uk">cma-l@mailman.commedia.org.uk</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, March 09, 2015 10:51
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [cma-l] DAB trials</DIV>
<DIV><BR></DIV>Thanks for your response Ian, but with respect, that's exactly
what I said - Ofcom have 'sourced' suitable transmitters. Whether they've
actually been built yet is of no consequence. I wouldn't expect there to be
ten units sitting on a shelf just waiting to be delivered.<BR><BR>I hope the
trials prove to be of benefit to the industry. <BR><BR>Phil Dawson<BR>FANTASY
RADIO 97FM<BR>Devizes ,<BR>Wiltshire<BR><BR>
<DIV class=moz-cite-prefix>On 09/03/2015 09:27, Ian Hickling wrote:<BR></DIV>
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<DIV dir=ltr>Not so I'm afraid Phil.
<DIV>The information that we have suggests that <SPAN
style="FONT-SIZE: 12pt">transmitters for the project will be produced
specifically by a UK manufacturer already producing similar equipment for
existing broadcasters.</SPAN></DIV>
<DIV><SPAN
style="FONT-SIZE: 12pt">Ian</SPAN></DIV></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>