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VS: [DX] Digitaali Stereo AM? Fwd) Re: WOR 710 heard in Finland
Joo, monet AM asemat jenkkilässä
ovat IBOCia testailleet tai testaavat
parhaillaan. Näiden lähetysten aiheuttamista
häiriöistä analogisille lähitaajuuksien
asemille on peistä taitettu jenkeissä
ahkerasti. Hauserin DXLD bulletiineissa
on viimeaikoina ollut melko laajalti
kannanottoja tähän asiaan.
Noita bulletiineja löytyy
http://www.worldofradio.com
73 JSA
>-----Alkuperäinen viesti-----
>Lähettäjä: dx-bounces@xxxxxxxxxxxxxxxx
>[mailto:dx-bounces@xxxxxxxxxxxxxxxx]Puolesta Jyrki Hytönen
>Lähetetty: 30. tammikuuta 2003 16:09
>Vastaanottaja: dx@xxxxxxxxxxxxxxxx
>Aihe: [DX] Digitaali Stereo AM? Fwd) Re: WOR 710 heard in Finland
>
>
>Sain juuri vastauksen WOR 710:ltä (alla). V/s kertoo aseman
>testanneen digitaalilähetyksiä, jonka vuoksi kaistanlevys on
>kapeampi ja kuuluvuus täälläpäin parempi. Mutta onko kenelläkään
>tietoa AM-asemien siirtymisestä (steereo)digitaalilähetyksiin?
>Ensimmäiset radiot tulevat kuulema markkinoille tänä kesänä.
>Jäävätkö jenkit kohta vain muistoksi menneiltä vuosilta ja
>tasaataajuuksilla kuulemme vain kohinaa?
>Utelee. JHY
>------- Forwarded message follows -------
>Send reply to: "Kerry Richards" <krichards@xxxxxxxxxx>
>Date sent: Thu, 30 Jan 2003 08:28:13 -0500
>
>Yes, you have in fact DX 'd WOR-AM.
>
>For the past several months we have been testing a new Digital
> transmission scheme by Ibiquity. This has reduced our analog
>bandwidth to 5khz, therefore we are much louder on the dial and
>now get out farther, which ends up helping far away listeners like
>yourself.We frequently get reports from the UK and as far away as
>Russia. This is due to the WOR directional antenna, which pushes
>about 250kw ERP, into the Atlantic Ocean and beyond. Our
>antenna is designed to cover the US eastern seaboard, and your
>reception is a by-product of the design of our antenna.
>With the internet, DX'ing is now becoming almost a thing of the past,
>and with the US getting into an In Band On Channel (IBOC) digita
> transmission scheme for AM broadcasters, you may have even more
> difficulty getting a lot of US stations. Right now we are not operating
> this system at night but we expect IBOC will eventually be on at night
>. There are digital carriers on each side of the analog signal, and
>sound like white noise, and presently go off at sunset and on at
>sunrise NY local time. Time will tell on this one.
>
>The new HD radio's will be out here in the US this summer, we are
> excited about it because it allows us to deliver a stereo digital signal
> to our listeners. The new radios we have tested make WOR sound like FM.
>You can keep in touch via our website www.wor710.com, thanks for
> your interest in WOR.
>
>Kerry Richards
>Chief Engineer
>WOR-AM
>Buckley Broadcasting Corporation
>
>
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THE INFORMATION IN THIS ARTICLE IS FREE. It may be copied, distributed
and/or modified under the conditions set down in the Design Science License
published by Michael Stutz at http://dsl.org/copyleft/dsl.txt