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[linrad] LF beacon Linrad S file
Kohjin and all:
There is another LF Linrad S file taken with the Time Machine hardware,
without the broadband noise at 60000 (360 KHz). It is at
http://www.qsl.net/w3sz/vlf3.bz2 . There is still broadband pulse noise
that Linrad is doing a GREAT job of eliminating in this file.
Look/listen with the smart and dumb filters on and then off; amazing!! I
listen / play with Linrad in WCW mode (A). This file is about 2 minutes
at 90 KHz-plus bandwidth. So it is 34.255 MB compressed. Thank
goodness for cable modems ;)
A gif file taken of Linrad screen shortly after the noise at 60000
disappeared is at http://www.qsl.net/w3sz/vlf3.gif
When you run the S file or look at the gif file you will note
Beacons at 27000 and 29080
55020 and 57070
62010 and 64060
86980 and 89080
This will be the last S file for a while unless there are special
requests, and unless I have time to get some EME files as Kohjin
After I recorded this band conditions improved and I was able to receive
in addition to the above LF Navaid beacons from Puerto Rico and Cuba, as
well as Sudbury, Canada. But I did not make an S file at that time.
2 Merrymount Road
Reading, PA 19609-1718
> -----Original Message-----
> From: owner-linrad@xxxxxxxxxxxxxxxxxxxxx
> [mailto:owner-linrad@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Kohjin Yamada
> Sent: Friday, October 11, 2002 8:53 PM
> To: linrad@xxxxxxxxxxxxxxxxxxxxx
> Subject: RE: [linrad] Linrad Questions
> Hi Roger good evening,
> I woke up a little late this morning and saw good news from both of
> you! I will try first download Leif's new one and next yours. I will
> give you informed shortly.
> Almost two years lovely grand son will visit us this week end so I'll
> be busy some, Hi:-)
> Also, I have recently finished the evaluation of RedHat 8.0 which
> ended up badly I will report this to the reflector. Maybe some chance
> with lir00-48?
> More later, thanks anyway,
> Kohjin - JR1EDE
> At 16:15 02/10/11 -0400, you wrote:
> >HI, Kohjin!
> >I have placed the following bzip'd Linrad S files on the web. These
> >are nothing special. I didn't wait till the bands were hot, or look
> >for special signals. I was working when I got your message,
> and it was
> >the middle of the night here, so I just took 'The Time
> Machine' to the
> >band in question and recorded 30-90 seconds (roughly) of a
> 90 KHz or so
> >swath of the band, at 0030 local time this a.m. while between work
> >duties. I just made sure there were some signals in each
> file and then
> >uploaded them to the web. The HF band files were obtained
> by hooking
> >up an R7 vertical to the input BNC connector of The Time
> Machine. The
> >VLF file was obtained by hooking up a 108 inch active antenna to the
> >AMRAD VLF converter, which was hooked up to the BNC input
> connector of
> >TTM. Output (I/Q) of TTM went directly to Linrad. Each file
> starts at
> >an even 100 KHz mark on the band in question and goes up 90 KHz from
> >there. I have lots of birdies, but there are interesting signals as
> >well. On the VLF file there are 3 or 4 beacons, which
> appear on Linrad
> >(when run at the proper waterfall speed) as pairs of vertical dashed
> >lines around a central carrier. The dashed lines are of course the
> >morse code identifiers of the beacons. All files were made with the
> >appropriate plug-in band filter supplied for that band by the folks
> >that make TTM.
> >The files are:
> >http://www.qsl.net/w3sz/vlf1.bz2 6.932 MB size 300-390 KHz VLF
> >Morse Beacons
> >http://www.qsl.net/w3sz/40m1.bz2 12.611 MB size 40 meter CW band
> >http://www.qsl.net/w3sz/40m2.bz2 17.936 MB size 40 meter DX phone
> >http://www.qsl.net/w3sz/20m1.bz2 19.620 MB size 20 meter phone
> >I checked the URL's and all of these are available for download.
> >Let me know your comments, and if you want something else I
> can try to
> >do it.
> >Roger Rehr
> >W3SZ FN20ah
> >2 Merrymount Road
> >Reading, PA 19609-1718
> >> -----Original Message-----
> >> From: owner-linrad@xxxxxxxxxxxxxxxxxxxxx
> >> [mailto:owner-linrad@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Kohjin
> >> Yamada
> >> Sent: Thursday, October 10, 2002 8:01 PM
> >> To: linrad@xxxxxxxxxxxxxxxxxxxxx
> >> Subject: RE: [linrad] Linrad Questions
> >> Hi Roger,
> >> Thanks for your nice input.
> >> At 18:47 02/10/10 -0400, you wrote:
> >> >With Leif's help I modified them to decrease 0 frequency
> >> noise, and I
> >> >also don't use their oscillator due to phase noise; I
> use external
> >> >oscillator.
> >> If I were, I would do the same.
> >> Did you use PTS or xtal osc?
> >> >If you want I can make and send you some gif files of the
> >> spectra with
> >> >them, or some Linrad S files. Just tell me what you want
> >> (band, mode,
> >> >file size, etc) and I can post them to my web site.
> >> I appreciate as huge as possible!
> >> Any band or mode but I prefer 144MHz EME of course.
> >> Thanks as always,
> >> Kohjin - JR1EDE