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[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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