Mark Thompson wrote:
Digital Radio Century Club JT65A New Years Crawl
Updated rules and new operating times below...
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Default
Digital Radio Century Club JT65A New Years Crawl
Date: Monday December 31, 2007
Time: 6:00 pm - 7:00 pm
Location: JT65A ONLY on 20M or 40M ONLY (suggested frequencies - 14074.077
7035.40)
Notes: Announcing the Digital Radio Century Club New Years Crawl
Date : January 1 2008
Time : Z
] Digital Radio - Well
Broadcast
This has been going on for over 25 years that I know
of.
But I don't think it was digital. AM and FM radio
had a
service for the blind that was a sub carrier. Sounds
very
close to it.
At 06:29 PM 11/12/2007, you wrote:
In the U.S. the FCC has approved
Hi All,
Most likely a little off topic, but it is still to do with Digital Radio.
With the advent of Digital TV, I am surprised that there has not been more work
done on the Broadcast side for normal radio.
I would of thought that this would of been easier to implement and install,
don't have
digital radio
receivers in stores yet.
73,
John
KD6OZH
- Original Message -
From: Kevin Natalia
To: digitalradio@yahoogroups.com
Sent: Monday, November 12, 2007 20:13 UTC
Subject: [digitalradio] Digital Radio - Well Broadcast
Hi All,
Most likely a little off topic
Sent: Monday, November 12, 2007 20:13 UTC
Subject: [digitalradio] Digital Radio - Well Broadcast
Hi All,
Most likely a little off topic, but it is still to do with Digital Radio.
With the advent of Digital TV, I am surprised that there has not been more
work done on the Broadcast side
This has been going on for over 25 years that I know of.
But I don't think it was digital. AM and FM radio had a
service for the blind that was a sub carrier. Sounds very
close to it.
At 06:29 PM 11/12/2007, you wrote:
In the U.S. the FCC has approved a system called IBOC (In-Band On Channel)
: [digitalradio] Digital Radio - Well Broadcast
This has been going on for over 25 years that I know of.
But I don't think it was digital. AM and FM radio had a
service for the blind that was a sub carrier. Sounds very
close to it.
At 06:29 PM 11/12/2007, you wrote:
In the U.S. the FCC has
The SCA (Subsidiary Communications Authority) was a sub-carrier quite a
distance from the main carrier and was not detected by the standard FM
receiver. The audio quality was very low. I think the maximum was only
8000 Hz or something relatively modest but worked well for speech.
The IBOC (In
On 7/25/07, Rick [EMAIL PROTECTED] wrote:
We then switched to MFSK16 and had much better copy.
Definitely agree with that. mfsk-16 is the only digital mode i like
to use for skeds (for rag-chewing on a sked that is).
For random contacts, psk-31 is just fine. But if i want nearly
error-free
Just curious, is anyone on this list using the
Digital Radio Interactive Sked Page
(http://www.obriensweb.com/drsked/drsked.php)
for anything other than HFLINKNET / ALE stuff?
Or has anyone seen any activity there lately for other
than ALE testing?
Just checking.
Orrin wn1z
in northeast Calif.
I just used it in the past day or so for trying to coordinate a DEX
contact on 20 meters. We couldn't quite do it though, even when we
switched to another mode:(
A short time later I heard a Pactor 1 FEC station from New England
calling CQ not far from my 20 meter frequency, but the Pactor
Somehow it seems that the spirit of amateur radio that is supposed to
advance the radio art, has left the ham shack, and been replaced by a
fear of anything that might challenge the status quo.
Digital radio is exciting, because in the world of surface mount
technology, its one of the last
FLDIGI is good software, available from Dave w1hkj ( w1hkj.com).
FLDIGI needs hamlib, but that available from debian apt-get. Kbuntu
will retrieve and install hamlib for you. Dave also has a precompiled
binary , makes installation easy.
I have used 3 of his other pgms- all work fine-
WinDRM - HF Digital Radio Mondiale
http://n1su.com/windrm/ WinDRM is a digital mode on HF that lets you do
digital voice, image and data. You can transfer data at almost 1KB/s
without using proprietary hardware!
SDR1000 http://www.flex-radio.com/ is a product of FlexRadio Systems and is
I was wondering if anyone is producing, or is
interested in producing occasional podcasts related to digital amateur
radiomodes ? Just an idea, but I thought a podcast of some strange
modes, sample signals, latest news, etc, etc, might be a good idea.
Andy K3UK
The K3UK DIGITAL MODES
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