Yes Dale, look below.
I would say that the consensus is that one would need 1 GB
to be on the safe side.
I was just after rough figures, i e if we are talking a few
hundred MBÂs or 1 or 2 GBÂs, 2 Gigs would be on the super
safe side I guess.
73 Jim SM2EKM
----------------------------------------------------------------
Can you compile/summarize and share the responses you received with the rest of
us, Jan?
:-)
73,
dale, kg5u
-------------------------------------------------------------------------------
You can try the Ogg Vorbis compression codec that is better than mp3.
http://en.wikipedia.org/wiki/Vorbis
http://plus24.com/mp3-howto/mp3-howto.html
And programs like SOX to record an compress in background, in linux it's
easy cake, just a script.
73, fede.
-----------------------------------------------------------------------------
Hi Jim -
I use Writelog to record the contests. The setting I use is MPeg-3 32kbs/24000
hz 3kb/sec.
This will record a 48 hour contest in less than 800Mb and can fit on a CD.
In Writelog, you can click on a QSO and it will play. However, I seldom listen
to the recordings at any length. Mostly, people want to hear how they sound.
I use an 800Mhz machine, but not the one I use for logging/dvk/etc.
GL and 73,
Tom W2SC 8P1A
-------------------------------------------------------------------------------
From Tips and tricks page:
 Recording is done at 11025 Hz, 8 bit, mono (30 seconds = 250 kB, maximum 30
MB/hour).
Recording uses about 1 GB per 24 hours (40â50 MB per hour). There are
programs
which can compress these wav files to MP3 files but if this can be done at the
same time when giving CQ depends a lot on the computer used. A clunker will
surely not do it. There is of course the possibility to do this after the
contest. Enough harddisk space during the contest is necessary.
--------------------------------------------------------------------------------
Using typical MP3 compression Writelog uses about 350MB for a 48 hour
contest... I can look up my settings if you need them..but you can easily store
a full 48 hours on a CD...
The qualtiy is adequate to hear things you missed real time..which is very
disturbing when you review your UBN file.
73 Chas K3WW
---------------------------------------------------------------------------
Jim,
Maybe someone replied already, but if not, here with WL I recorded the whole
of last years CQWW PHONE and it used about 200 Mbit.
73
Steve
GW4BLE
----------------------------------------------------------------------------
Hi Jim,
Depends on your compression routine. Using mp3, it is 3 MB/hour and
the number of QSOs doesn't matter because recording is on all the
time. Without compression it is BIG file.
73,
Barry W2UP
-----------------------------------------------------------------------------
Hi Jan,
I use about 15 meg per hour for stereo, good quality recording for 720 meg,
which fits on one CD-R.
73, Ken, K6LA / VY2TT
-----------------------------------------------------------------------------
I use a computer running linux. I use sox and lame
to do the recording. The lame setting I have been
using that gives me the quality that I like uses a little
under 21 Mb/hour. I restart the recordings at the top
of each hour using a cron job. I have found it is
much eaiser to deal with 24 or 36 or 48 21Mb files
than it is to mess with one big file.
I am not an expert with lame ... but here is what I have been
using most recently with very good results.
sox -t ossdsp -w -s -r 44100 -c 2 /dev/dsp -t cdr - | \
lame --verbose -r -b48 --scale 3.5 - contest.mp3
Here is the IARU contest first hour:
http://www.kkn.net/~k5tr/audio/contests/IARU/2005/2005-IARU-K5TR_2005-07-09-12:00.mp3
There are more contests here:
http://www.kkn.net/~k5tr/audio/contests/
If you poke around in there you will notice that there are some
smaller and maybe larger file sizes - this is because I have been
playing with the lame settings. Some use VBR and one or two are
mono recordings because I did not notice that I was not recording
in stereo. I use stereo most of the time since I want to record
the two radio audio.
-- George Fremin III - K5TR
------------------------------------------------------------------------
Ett par gigas: ca 8kHz, 8 bit.
48x3600x8000x8 = 11.059.200.000 bits per channel per contest.
Divide by 8 to get Bytes.
Some 1.4 G/ channel.
73,
Jukka OH6LI
--------------------------------------------------------------------------
Actually it is just the time the recording is on not by the QSO. The
program just runs in the background.
In Sweepstakes last year I used a program called Audacity. I don't recall
exactly how much space it took up but it was not staggering.
You need to adjust the sampling rate and bits to a reasonable rate so the
file is not huge but readable. I will try to find the file size and repost
the size but I want to say around 200mb.
Mike
W0MU
----------------------------------------------------------------------------
Dale L Martin wrote:
>
>>
>> Jan Erik Holm wrote:
>>
>>> IÂm woundering about how much HD space that might
>>> be needed to record a 48 hour contest, N1MM or WL
>>> software.
>>> I know it depends on how many QÂs one makes but if
>>> someone with experience just could give some ball
>>> park figures.
>>>
>>> 73 Jim SM2EKM
>>>
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