[cma-l] AM community radio

[Ian Hickling]

PhilI'm not denying at all that AM has its advantages and uses - and believe me I wasn't being negative - just very down-to-earth practical
We've run AM RSLs with a guyed 18m pole with a top hat - and we have one CR running with the £3500 classic Radica hinged plastic flagpole antenna.But we're talking here about a minimum £15,000 investment a for a 5-year contract with the absolute requirement of being able to sell lots of airtime on a robust reliable signal.
So - if you can produce a 1kW transmitter that will perform to Ofcom's satisfaction and an ATU that will handle that - you have a customer sitting here waiting.

Ian Hickling
Partner

Office: 01635 578435  (7am-11pm UK time)Carphone: 07530 980115 (only responds when driving)6 Horn Street, Compton, NEWBURY, RG20 6QS

> Date: Tue, 15 Sep 2015 13:52:18 +0100
> From: office at fantasyradio.co.uk
> To: cma-l at mailman.commedia.org.uk
> Subject: [cma-l] AM community radio
> 
> Afternoon all,
> 
> For what it's worth, my own experience with AM is that you can get some 
> astonishing results! For several RSLs I have used a wire antenna, (an 
> inverted L) to great effect. The Earth mat consisting of wire netting 
> laid on the ground. Height is might as always, but even with only 20 
> metres, we were getting into Europe! I have reception reports to prove 
> it. I have also used a single 1 1/4" tube steel mast, with a 'top hat' 
> to increase top capacitance. I believe Radica used to do AM antennae 
> using a lamp post. (you can get a lamp post for about £300)  The 
> standard RSL AM licence is for 1 watt. This gives a similar coverage to 
> FM at 25watts. Oh yes, and I designed and built my own transmitters, 
> using valves!
> 
> Within the specified 5km radius for community radio, AM will do the job 
> nicely. (very important to get some good audio processing though) Also, 
> with fewer stations now on AM it could get better!
> 
> Anybody want to know more? mail me at phildawson at lemonmail.co.uk.
> 
> Phil Dawson
> FANTASY RADIO97FM
> Devizes
> Wiltshire.
> 
> 
> 
> On 15/09/2015 12:00, cma-l-request at mailman.commedia.org.uk wrote:
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> > Today's Topics:
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> >     1. Re:  AMCR - SDR (Associated Broadcast Consultants)
> >     2.  AMCR - SDR (Ian Hickling)
> >     3. Re:  Confession (Two Lochs Radio)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Tue, 15 Sep 2015 10:33:45 +0100
> > From: Associated Broadcast Consultants <info at a-bc.co.uk>
> > To: The Community Media Association Discussion List
> > 	<cma-l at mailman.commedia.org.uk>
> > Subject: Re: [cma-l] AMCR - SDR
> > Message-ID:
> > 	<CAG9-nrYO5ZHtH6B54QmMBYS1VZqzLaSJD39dX4W_jqJ_g95C3A at mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > If anyone is interested I have Software Defined Radio for sale on Ebay at
> > the moment.  I've used the same type of unit to run a DAB test multiplex.
> > I'm pretty sure I've recall that someone has already written the code to
> > run it as a DRM transmitter.
> >
> > http://www.ebay.co.uk/itm/HackRF-One-Software-Defined-Radio-NEW-Unopened-FREE-Postage-BARGAIN-/271983417851?hash=item3f537999fb
> >
> > I can't help feeling though that the SDR is the "easy" part.  The difficult
> > part is getting an efficient aerial system.
> >
> > Glyn
> >
> 
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