From: Ralf Baechle DL5RB <ralf@linux-mips.org>
To: G?nther Montag <dl4mge@darc.de>
Cc: linux hams news group <linux-hams@vger.kernel.org>,
-HFTERMHACKERS- <hfterm-hackers@lists.sourceforge.net>
Subject: Re: Norm Frequency beacon ?
Date: Thu, 27 May 2004 15:05:14 +0200 [thread overview]
Message-ID: <20040527130514.GB1166@linux-mips.org> (raw)
In-Reply-To: <200405271330.25402.dl4mge@darc.de>
On Thu, May 27, 2004 at 01:30:25PM +0200, G?nther Montag wrote:
> does someone know, is there something lik a beacon on the air on shortwave or
> medium wave, ham or radio band, which sends a known fixed exact frequency
> tone in AM, e.g. 1000 Hz or other, for calibration?`
> Something like DCF77 on longwave?
>
> We have a real-time pactor program which needs an exact frequency for
> calibration, and not everyone has an DCF77 receiver.
A few shortwave stations among them DW have a reputation for a highly
accurate carrier frequency. There are also the usual time stations such
as WWV on shortwave. Within Germany ZDF's signal makes a good timebase;
a few years ago description how to build a highly accurate frequency
normal based on this signal have been published.
73 de DL5RB op Ralf
--
Loc. JN47BS / CQ 14 / ITU 28 / DOK A21
next prev parent reply other threads:[~2004-05-27 13:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-27 11:30 Norm Frequency beacon ? Günther Montag
2004-05-27 12:53 ` Matti Aarnio
2004-05-27 17:56 ` Thomas Sailer
2004-05-27 20:17 ` Matti Aarnio
2004-05-31 10:30 ` Günther Montag
2004-05-31 17:24 ` BBS Software Dave Stubbs
2004-06-02 22:13 ` Bill Vodall
[not found] ` <40BF6052.30407@utoronto.ca>
[not found] ` <000601c4499a$74cb7aa0$6a7ea8c0@wa7nwp.ampr.org>
2004-06-03 19:21 ` Dave Stubbs
2004-06-03 21:44 ` Robin Gilks
2004-05-28 1:02 ` Norm Frequency beacon ? Tapio Sokura
2004-05-27 13:01 ` Dennis Boone
2004-05-27 13:05 ` Ralf Baechle DL5RB [this message]
2004-05-27 20:33 ` John Magliacane
-- strict thread matches above, loose matches on Subject: below --
2004-05-27 18:10 Dave Platt
2004-05-27 21:51 ` John Coppens
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040527130514.GB1166@linux-mips.org \
--to=ralf@linux-mips.org \
--cc=dl4mge@darc.de \
--cc=hfterm-hackers@lists.sourceforge.net \
--cc=linux-hams@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox