Olivia MFSK Ver.1
(Olivia by SP9VRC - VK2DSG)
New hybrid MFSK & FEC; Signal sounds like bubbles
under the water; Signal looks like Dots on a waterfall
Olivia MFSK with Walsh FEC
mode was developed for ionosphere made distortions and weak signal.
Digital mode approval: http://www.arrl.org/FandES/field/regulations/techchar/
Hardware:
A RIGblaster (1ea), Soundcard speaker
cables: Radio Shack-42 2387 (3ea).
RIGblaster:
Strap P1 to match your radio's
Microphone. (i.e. RJ45 IC706 page 9). Set Audio Level
Control full clockwise.
Swith VOX/AUTO to AUTO, apply
power. Cable RIGblaster to
radio and
computer, as shown in RIGblaster manual’s hookup diagram; (PC Speaker Out to
Rigblaster In; PC Aux. In
to Rigblaster
Out). The RIGblaster interface will allow computer
speakers to continue to operate for music etc.
Note: Don't use low impedance un-amplified
speakers.
Computer Downloads: http://n1su.com/olivia/
OliviaAid-8-jan-05.zip
OliviaAid
13-jan-05.zip
Olivia-Aidhelp.doc
Install to Olivia folder:
Program Files/OliviaAid
1. Unzip OliviaAid 8-jan
2. Unzip OliviaAid
13-jan
3. In the Olivia\CYGFIX folder:
4. Click on CYGWIN.zip
and unzip to C:\
5. Click on CYGWIN.REG and register -
YES.
Create a shortcut Icon
Download and Install: WinDRM 18-dec-06
zip into WinDRM folder OR the
Spectrogram (gram
v517.zip) into Gram folder and unzip.
Reboot computer
Windows Sound card setup:
Master Volume: Master Volume to 1/3 of
the way up - Balance slider to the center
Wave Volume to 1/3 of the way up - Balance slider to the
center
Line In
Volume to 2/3 of the way up - Balance slider to the center
Microphone Volume to 1/3
of the way up
PC Speaker Volume to 2/3
of the way up
Recording Controls: Line In SELECT -
Volume to 1/3 of the way up - Balance slider to the center
Note: Turn the computer speaker volume control
knob most of the way, but not all of the way down.
Radio setup:
Set the IF Filter to 2.7KHz
Set Audio RF to MAX
Set VFO to: 14107.5
Set
Transmitter output power to ¼ manufacturer’s rated RF power output, 25 watts or
less is a good
operating setup for a 100 watt transmitter, to provide linear performance.
Set Mode to USB
Set Processor to OFF and SWR ON
Speak into Mic. Adjusting Mic. Gain so that ALC
doesn’t occur above the ALC Zone indicator.
Adjust Tuner for 1:1
Set ALC to ON and SWR OFF
ALC can remain (on) to control drive
limit.
Click on TX button (transmission starts).
Adjust RIGblaster
Audio Level Control, stopping as transmitter output power reaches MAX
(ie. 25 watts)
keep an eye on your ALC so that ALC does not occur; run with NO ALC
indicating
occurring; any ALC indicating, results in your TX Signal being distorted,
and causing
harmonics.
Note: The RIGblaster
Audio Level Control is the most precise way to adjust the
Soundcard output voltage into the
radio. The Microsoft Volume controls were
designed to
vary the voltage, through a range of reasonable outputs for Speakers;
They were not designed to be adjusted
so precisely as to be reliable set to
5 millivolts.
Recommended frequencies: USB
KHz
KHz
Tone Hz
1.838
1.838.5 8 500
1.838
1.838.5 16 500
1.840
1.840.5 16 500
1.840
1.840.5 32 1000
3.584 (Net
3.582 3.583.5 3.586.5
7038.5 7072.5
10136.5 10137.5 10138.5
14.104.5
14107.5
14108.5 14111.5
18102.5 18103.5 18104.5
21129.5
Clusters: 14.070 14.105.5 14.106.5
14.108.5
The European
bandplan.
Frequencies Should be the same in
Standard Frequency and Parameters
KHz
KHZ
Tone
Hz
7038,5 7039
16/32
500/1000
10138.5 10139 16/32
500/1000
14108,5 14109
32
1000 Call Frequency
14107,5 14108
32
1000
14106,5 14107
32
1000
14106,5 14106
32
1000
14076,5 14077
8/16
250/500 Alternative DX Channel
14090,5 14091
8
250 Narrow Band - Frequency
21129,5 21130
32
1000
To Setup:
Click on OlivaAid
Icon
Modes:
Set Number of Tones to: T32 (default) or
(T2 T4 T8 T16 T64 T128 T256 (spaced by 31.25Hz)
(32 Tones spaced by 31.25 Hz at a
rate of 31.25 Baud results in 1000Hz of Band Width).
Set Band Width Hz: BW1000 (default) or
BW125 BW250 BW500 BW2000
32/1000 for Bad
Conditions 8/500 16/500 for bad
conditions
Set Tune Tolerance Hz: M16 (default) (for
T32 & BW1000 ONLY Set: 2 4 8 16 32 64 128)
M20 = 32/1000 M30 = 8/500
Right Click on TX and type in COMM a Port
number
Click on RX (RX window turns green, is
activated, ready to RX)
S/N: 3.0 is not good; very good is S/N:
>6,
Freq: +78.1/125.0 Hz (receiver is tuned 78Hz too high; but
margin is 125Hz, you are still safe)
Time: 0.224/2.048 sec. (time offset
between transmitter & receiver soundcard sampling)
Locate an Olivia Signal with the downloaded Spectogram program
To Operate
To Transmit:
Click TX (TX window is activated)
(Olivia starts transmission)
Type your message in TX window
Click Ctrl + R (Olivia goes into RX) to
end transmission
To Type ahead from Buffer window:
Right Click on “T” to bring up Buffer
window
Type your message in Buffer window
Click SEND READY FOR TX
Click TX (TX window activates and Buffer
file is transmitted)
TX window deactivates when Buffer in
empty.
TX a File ie CQ CQ
CQ from Buffer:
Right Click on "T" to bring up
Buffer window
Select: LOAD - Select a file (ie. CQ file)
Click OPEN
Click SEND READY FOR TX
Click TX (File is transmitted)
Click ENTER to end transmission
Click X to Exit buffer
TX a Message from Buffer:
Right Click on "T" to bring up
Buffer window
Type your message in Buffer window
Click SEND READY FOR TX ("M"
turns pink)
Click TX (message is sent)
Click ENTER to stop transmission
Click X to Exit buffer
Find Olivia Stations: DX-SPOT
Connect to Internet with the Olivia MFSK
Online Finder page
http://n1su.com/olivia_online.html
to see Stations
on Olivia, & show others you are operating Olivia.
type: Call -
Freq. - Locator - Text ie. T32 BW1000 M16 - Click Submit
Other Stations will answer on Online
Table over Internet with their: Call, Freq,
location and
text message.
Use the Update Form Data Text message
window to pass-on any additional information:
before, during
or after QSO.
MUF Charts: http://www.arrl.org/qst/propcharts/
DX Summit: http://oh2aq.kolumbus.com/dxs/
DX Spots: http://hamcall.net/dxspots (input from DX Summit)
DX-Telnet v5.2 http://www.golist.net
DX Spot: http://www.ng3k.com/misc/cqc2005.html
DX Scape:
http://www.dxscape.com/ww.html
DX ers:
http://www.dxers.info/index.php
Reflector: http://groups.yahoo.com/group/oliviadata/
TQSLCert v1.11 ARRL.632 © 2001-2005 TrustedQSL
Library v2.0 wxWindows 2.4.2
SACMan Cabrillo manual log v2.11
Characteristics:
Doesn't tollerate coherant interferance & non-uniform freq.response.
Good with weak signals
S/N: Decodes signals that are 10db below
noise (w/1000Hz bandwidth).
MFSK 15 wpm FEC: Welsh 64 point, to represent
7-bit ASCII
Tones: 2, 4, 8, 16, 32, 64, 128, 256
(increase for bad propagation)
Bandwidth set: 125, 250, 500, 1000, 2000
M (auto-tune): 2 (+/- 31.2 Hz) , 4, 8, 16, 32, 64, 128, 156
For the Signal to Noise performance,
transmissions can still be
decoded when the
signal is 10 db below the Noise, where the Noise
power is measured
within the 1000Hz bandwidth.
The received signal parameters
S/N: is calculated by the Walsh function
decoder: at the last stage, 64-bit Walsh functions are decoded into 7-bit
characters (like in MT63). The decoder performs a fast Hadamard
Transform on each vector and then picks up the strongest value – this is called
signal. The RMS (Root Mean Square) of the other 63 values are
the measure of the noise. Signal divided by (the RMS of) the noise makes the
number that is displayed on the screen. Actually, signal and noise are being
averaged over several characters for a fairer representation of the signal.
The important thing is that critical S/N is
around 3: when you see 3.5-4 you are at the limit. But when you see 6 or more,
(300+ is not uncommon) you are safe, the copy will
most likely be perfect. Use the S/N indication to improve your reception setup:
antenna, preamplifier, filter, notch, AGC, etc.
Frequency offset tells you the frequency
difference between the transmitter and the receiver. The current code provides
only a rough measure: to within half the tone spacing, that
is 15 Hz for the default mode of 32 tones in 1000 Hz.
The mfsk_trx
displays it this way: +78.1/125.0 Hz and this means: your receiver is tuned 78
Hz too high but the margin is 125 Hz thus you are still safe. But when you see
+125 Hz/125Hz this means: you are 125 Hz up and at the limit, thus you may
loose the transmission is your mistune increases for any reason. In such case
you may try to tune your receiver down very slowly (like 1 Hz/second) but
better retune your receiver quickly in a pause between transmissions or when
you are switching between receive and transmit.
Time offset is there to monitor the timing
stability that is basically whether the sampling rates of the transmitter or
receiver soundcards are same. Observe this number for like 20-30 seconds and
see by how much is moved. If it is same all the time, then your card has same
sampling rate as the one at the transmitter. But if the number moves like by 30
ms during 30 seconds this means that your card is off by 30 ms/30 sec = 0.001 =
0.1% (actually it can be the other card that is off or both). You can the
correct the sampling rate with the –R option.
For the default mode (32 tones, 1000 Hz) the
difference like 0.1% is still OK, but 0.5-1.0% is already bad and it needs
correction, otherwise you will see very bad S/N and lot of errors on receive.
As well your correspondent(s) will see low S/N and receive errors on his
screen. Soundcards can be very much off the nominal frequency: mine is like
8100 Hz !
References:
http://n1su.us/olivia (a how to)
http://n1su.us/olivia_online.html
(find others on Olivia)
http://members.aol.com/f6cte/index_anglais.htm
(Multipsk v3.9)
http://www.hharc.org/amsftware.htm
(test software)
MixW v2.16b8.exe http://mixw.net/beta/beta8/MixW216b8.exe
MixW Modes http://mixw.net/beta/modes.zip
VK2DSG [email protected] (ver. 1 Beta)
Olivia/Multipsk
v3.11: http://multipsk.eqth.org/index.html
DominoEX http://www.qsl.net/zl1bpu/domino/index.htm
US Packet: http://www.uspacket.org/plan_a.html
Hamshack LINUX-Knoppix operating system 528MB CD $5.00 http://www.cheapbytes.com/
Identify Digital Radio Sounds:
http://det.biehu.es/~jtpjatae/sound.html
http://home.teleport.com/~nb6z/audio.htm
Signals Analysis/Decoding/Demodulation:
Monteria http://www.montariallc.com/company.htm
RFSPACE http://www.rfspace.com/sdr14.html
HOKA Code300-32 http://www.hoka.com/
Test equipment software:
WinDRM 18-dec-06 zip http://n1su.com/windrm/download.htm
Audio Signal Analyser:
SpectrumLab v2.4 b29 (speclab24b29.zip) www.xs4all.nl/~nl9222/software.htm
Oscilloscope, Dual-trace: WinScope 2.51 ( osc251.zip) www.electronicsaustralia.com.au/cgi-bin/downloads.pl?area=5
Spectrogram v5.0.8 (gram517.zip) http://neasmn.org/ben/software/software.htm
Spectrogram v4.2.6 (gram426.zip)
GSpec v1.0 http://wwww.ozemail.com.au/~jwsamin
Analyzer 2000 v5.04 (Pay for) www.dxzone.com
WinDRM setup:
Click Setup – Display - Waterfall
Spectrogram
setup:
Click on GRAM4264 Icon (spectrogram
window is activated)
Click FILE
Click F3 Scan Input (set Scan Input
parameters)
Click OK (view signals on frequency) set
VFO that receive signal to start at 400Hz
To Exit: Click STOP - FILE - EXIT
Joe AA3EU