Embedded Files
7 February 2021.
10. SOMALIA AMATEUR RADIO UNIVERSAL ALL FREQUENCY DATABASE INDEX.
Frequencies and wavelengths.
Direct Current DC,
Telluric current (Earth electricity),
Infrasound,
Audio,
Ultrasound,
Radio,
Infrared,
Light,
Ultraviolet,
X-rays,
Gamma rays,
Cosmic rays, (Cosmic particles from space),
Astronomy.
First section: Broadcasting (1 – 6).
Legal and illegal Radio broadcasting.
Legal and illegal TV broadcasting.
Legal no license (licence) AM hobby radio stations.
Legal no license (licence) FM hobby radio stations.
Legal no license (licence) Experimental radio stations.
Legal no license (licence) UHF Outer Space broadcasting.
Mono and Stereo AM radio.
Mono and Stereo FM radio.
Digital radio.
Clandestine radio stations.
Illegal pirate radio stations.
Illegal pirate TV stations.
Legal licensed (licenced) Amateur TV stations.
Analog (Analogue) TV.
Digital TV.
Second section: Communications and emissions (7 – 33).
Air Force radio.
Aircraft radio.
Airport radio.
Amateur radio.
Amateur space satellites.
Ambulance radio.
Army radio.
Aviation radio.
Broadband Internet over Power lines (BPL).
Boat radio.
CB radio.
Cosmic Microwave Background Radiation (CMBR) from outer space.
Cosmic ray astronomy (Cosmic particle astronomy).
Drift net radio bouys,
Drift net radio buoys.
Earthquake detection.
Emergency radio.
Experimental radio.
Fishing radio beacons.
Gamma ray astronomy.
Global Positioning System (GPS).
Industrial, Scientific and Medical (ISM).
Infrared astronomy.
Laser communications.
Local Area Networks (LAN).
Marine radio.
Medical radio.
Military radio.
Meteor scatter radio communications.
Meteorology radio.
Moon radio communications.
Morse code radio stations.
Man made radio emissions.
Narrow Band Television.
Natural radio emissions from the Earth.
Natural radio emissions from the Sun.
Natural radio emissions from Jupiter.
Natural radio emissions from Outer Space.
Navy radio.
Non Directional Beacons (NDB).
Non Directional radio beacons (NDB).
Online Police radio receivers.
Online Police radio scanners.
Online Radio scanning receivers.
Online Scanning radio receivers.
Online Short Wave radio receivers.
Optical astronomy.
Over the Horizon radar (OHR)
Fire radio.
Police radio.
Radar.
Radio astronomy.
Radio communications from Earth to Space.
Radio communications from Space to Earth.
Radio Jamming stations.
Radio navigation.
Satellite Radio.
Satellite TV.
Search for Extraterrestrial Intelligence (SETI).
Search for Life outside the Earth (Extra terrestrial Intelligence).
Ship radio.
Space radio.
Submarine radio.
Sub millimetre Astronomy (Sub millimeter Astronomy).
Time signal radio stations.
Ultraviolet astronomy.
Unknown and unexpected radio emissions.
Wireless Internet networks.
X-ray astronomy.
Introduction to the Somalia Amateur Radio Universal All Frequency Database index.
IF YOU HAVE A COMPUTER OR A RADIO OR BOTH THIS IS WHAT YOU CAN DO TODAY.
A hobby that only needs a computer or a radio or both.
The hobby of listening to radio signals reflected by the Moon.
The hobby of listening to space radio communications.
The hobby of listening to natural radio emissions from the Earth.
The hobby of listening to natural radio emissions from the Sun.
The hobby of listening to natural radio emissions from Planets.
The hobby of listening to natural radio emissions from the Universe.
The hobby of listening to Army radio communications.
The hobby of listening to submarine radio communications.
The hobby of listening to Navy radio communications.
The hobby of listening to ship radio communications.
The hobby of listening to aircraft radio communications.
The hobby of listening to Air Force radio communications.
The hobby of listening to man made radio emissions.
The hobby of listening to BPL Broadband Internet over Power line radio emissions.
The hobby of listening to Over the Horizon radar radio emissions.
The hobby of listening for unknown and unexpected radio emissions.
DX listening is the hobby of looking for unusual and unexpected radio signals.
A DX radio listener is a person who listens for long distance radio signals.
DX is long distance radio signals.
The hobby of DX Long distance radio transmission.
The hobby of DX Long distance radio reception.
The hobby of hunting for Amateur Radio (Ham Radio stations).
The hobby of hunting for Citizen’s Band Radio (CB Radio stations).
The hobby of hunting for Pirate Radio stations.
The hobby of hunting for long distant Radio broadcasts.
The hobby of hunting for long distant TV broadcasts.
The hobby of hunting for Utility Radio stations includes listening to aircraft, ships and unknown stations.
The hobby of hunting for man made or natural radio emissions from Earth, outer space, the Sun, the Planets and the Universe.
The following information will help you enjoy the hobby of DX (long distance) radio listening.
There are many radio frequencies and radio signals to explore.
The following navigation will help you start in the hobby of DXing (long distance listening) using a radio or an on-line radio.
The FIRST part BROADCAST STATIONS (1 - 6) covers radio broadcast stations and television broadcast stations including legal unlicenced (unlicensed) hobby radio broadcasts, legal unlicenced (unlicensed) hobby TV broadcasts, illegal pirate radio broadcasts, illegal pirate TV broadcasts and legal amateur TV broadcasts.
The SECOND part RADIO COMMUNICATIONS (7 - 29) covers listening to radio communications stations and radio emissions including civilian radio communications, police radio and emergency radio services, military radio communications, space radio communications, man-made radio emissions, natural radio emissions, amateur radio communications and legal unlicenced (unlicensed) experimental radio transmissions.
THE ALL FREQUENCY DATA BASE INDEX.
First section: Radio broadcast stations (1 – 6).
BROADCAST STATIONS.
RADIO BROADCAST STATIONS.
TV BROADCAST STATIONS.
1.
Long Wave radio broadcast stations.
1.1 LW AM radio broadcast stations.
1.2 LW DRM digital radio broadcast stations.
1.3 LW Clandestine radio broadcast stations (see in Short Wave broadcasting).
1.4 LW Pirate radio broadcast stations (see in Short Wave broadcasting).
2.
Medium Wave radio broadcast stations.
2.1 MW AM radio broadcast stations.
2.2 MW STEREO AM radio broadcast stations, MW AM STEREO radio broadcast stations.
2.3 MW AM digital radio.
2.3a. MW HD radio broadcast stations.
2.3b. MW DRM digital radio broadcast stations.
2.4 MW Clandestine radio broadcast stations (see in Short Wave broadcasting).
2.5 MW Pirate radio broadcast stations (see in Short Wave broadcasting).
2.6 MW legal unlicensed AM radio stations, MW legal unlicenced AM radio stations
3.
Short Wave radio broadcast stations.
3.1 SW AM radio broadcast stations.
3.2 SW DRM radio broadcasting.
3.2a. SW digital radio for International radio broadcasting.
3.2b. SW digital radio for local radio broadcasting.
3.3 SW SSB radio broadcast stations.
3.3a Amateur radio broadcast stations.
3.3b CB radio broadcast stations.
3.4 SW Clandestine radio broadcast stations (including LW, MW and FM Clandestine radio).
3.5 SW Pirate radio broadcast stations (including LW Pirate radio, MW Pirate radio and FM pirate radio).
3.6 SW radio studio link broadcast stations.
3.7 Listen to Short Wave radio using online radio receivers.
4.
VHF radio broadcast stations.
4.1 FM radio broadcast stations.
4.2 FM HD Radio (IBOC radio, IBOC digital radio) see VHF digital radio.
4.3 FM Clandestine radio broadcast stations (see in Short Wave broadcast stations).
4.4 FM Pirate Radio broadcast stations (see in Short Wave broadcast stations).
4.5 Legal unlicensed FM radio stations, Legal unlicenced FM radio stations.
4.6 VHF Digital radio broadcasting.
4.6a. DAB digital radio.
4.6b. DMB digital radio with TV built-in.
4.6c. DMB digital radio.
4.6d. ISDB digital radio.
4.6e. HD digital radio.
4.6f. DRM digital radio.
5.
UHF Radio broadcast stations.
5.1 UHF legal unlicensed FM radio stations, legal unlicenced FM radio stations.
5.2 UHF Digital Radio (terrestrial, earth based).
5.3 UHF Digital Satellite Radio.
5.3a. World space radio.
5.3b. DSB satellite radio trial.
5.3c. SIRIUS XM Radio.
5.3d. ISDB direct by satellite.
5.3e MSS direct by satellite.
6.
Television broadcast stations.
6.1a. VHF and UHF TV.
6.1b. UHF TV.
6.1c. SHF TV.
6.2a. VHF low power hobby TV broadcast stations.
6.2b. UHF low power hobby TV broadcast stations.
6.2c. SHF low power hobby TV broadcast stations.
6.3 Community TV free-to-air.
6.4 Cable TV.
6.5 Public access cable TV.
6.6 Pirate TV.
6.7 Satellite TV.
6.8 Amateur Television (Amateur TV, ATV).
THE ALL FREQUENCY DATA BASE INDEX.
Second section: Radio communications stations and radio emissions (7 – 33).
Radio communications stations.
Communications stations.
Radio emissions.
Astronomy.
Data.
7 – 10.1 Experimental Radio below 9 kHz, Frequencies below 9 kilohertz.
7.
Telluric current (Earth electricity) frequencies at 0 Hz (Direct Current) and near 0 Hz AC (Alternating Current).
8.
Infrasound pressure wave frequencies from 0.001 Hz – 20 Hz.
8c.
Audio sound pressure wave frequencies from 20 Hz – 20 kHz.
9.
Ultrasound pressure wave frequencies above 20 KHz.
10.
Radio wave frequencies from 0 – 9 kHz.
10.1 Experimental Radio below 9 kHz.
11.
TLF Radio Communications and Emissions.
Tremendously Low Frequency TLF radio from 0 Hz – 3 Hz.
11.1 TLF Earthquake detection.
11.2 TLF Experimental Radio.
11.3 TLF Submarine radio broadcasts.
11.4 24 hour TLF continuous monitoring.
12.
ELF Radio Communications and Emissions.
Extremely Low Frequency ELF radio from 3 Hz – 30 Hz.
12.1 ELF Experimental Radio
12.2 ELF Schumann resonances.
12.3 ELF Submarine radio broadcasts.
13.
SLF Radio Communications and Emissions.
Super Low Frequency SLF radio 30 Hz – 300 Hz.
13.1 SLF Experimental Radio.
13.2 SLF Schumann resonances.
13.3 SLF Submarine radio broadcasts.
13.4 SLF Power line noise.
14.
ULF Radio Communications and Emissions.
Ultra Low Frequency ULF radio from 300 Hz – 3000 Hz.
14.1 ULF Amateur Radio.
14.2 ULF Experimental Radio.
14.3 ULF Nuclear magnetic resonance detection.
14.4 ULF Submarine radio broadcasts.
15.
VLF Radio Communications and Emissions.
Very Low Frequency VLF radio from 3 kHz – 30 kHz.
15.1 VLF Amateur Radio and Experimental Radio.
15.2 VLF Earth research.
15.3 VLF Experimental Radio.
15.4 VLF Submarine naval broadcasts.
15.5 VLF Machine Transmitter.
15.6 VLF Military radio.
15.7 VLF Natural radio wave emissions.
15.8 VLF Radar.
15.9 VLF Radio navigation.
15.10 VLF Time Signal stations.
16.
LF Radio Communications and Emissions.
Low Frequency (Long Wave) LW radio from 30 kHz – 300 kHz.
16.1 LF Amateur Radio.
16.2 LF DGPS Radio.
16.3 LF Experimental Radio.
16.3w LF Marine Radio.
16.4 LF Military radio.
16.5 LF NDB Radio.
16.6 LF Radio Astronomy
16.7 LF Radio navigation.
16.8 LF Time Signal radio stations.
17.
MF Radio Communications and Emissions.
Medium Frequency (Medium Wave) MW radio from 300 kHz – 3 MHz.
17.1 MF Amateur Radio.
17.2 MF Experimental Radio.
17.3 MF Fishing radio beacons, MF Drift net radio buoys.
17.4 MF Marine Radio.
17.5 MF Military radio.
17.6 MF Morse code radio stations.
17.7 MF Meteorology radio.
17.8 MF NDB Radio.
17.9 MF Time Signal radio stations.
18.
HF radio Communications and Emissions.
High Frequency (Short Wave) SW radio from 3 MHz – 30 MHz.
18.1 HF Amateur Radio.
18.2 HF Aircraft radio.
18.3 HF BPL.
18.4 HF CB Radio.
18.5 HF Digital modes of transmission.
18.6 HF Experimental Radio.
18.7 HF Meteorology radio.
18.8 HF Marine Radio.
18.9 HF Meteor scatter communications.
18.10 HF Meteorology radio.
18.11 HF Military radio.
18.12 HF Morse code radio stations.
18.13 HF Narrow Band Television.
18.14 HF Radar.
18.15 HF Radio Astronomy.
18.16 HF Satellites.
18.17 HF Scanner Radio.
18.18 HF Space radio communications.
18.19 HF Time Signal radio stations.
18.20 HF Utility radio stations.
18.21 Listen worldwide on HF using online radio receivers.
19.
VHF Radio Communications and Emissions.
Very High Frequency VHF radio from 30 MHz – 300 MHz.
19.1 VHF Aircraft radio.
19.2 VHF Amateur Radio.
19.3 VHF Experimental Radio.
19.4 VHF Lightning radio echoes.
19.5 VHF Marine radio.
19.6 VHF Meteor scatter communications.
19.7 VHF Meteorology radio.
19.8 VHF Military radio.
19.9 VHF Police radio Fire radio, Medical radio. Listen to online Police radio scanners and receivers.
19.10 VHF Radio Astronomy.
19.11 VHF Radio direction finding.
19.12 VHF Railway Radio.
19.13 VHF Satellites.
19.14 VHF Scanner Radio.
19.15 VHF Severe weather radio communications.
19.16 VHF Space Cosmic Rays.
19.17 VHF Space radio communications.
20.
UHF Radio Communications and Emissions.
Ultra High Frequency UHF radio from 300 MHz – 3000 MHz.
20.1 UHF Amateur Radio.
20.2 UHF EME Moon radio wave communications.
20.3 UHF Experimental Radio.
20.4 UHF CB Radio.
20.5 UHF Family Radio Service (FRS radio)
20.6 UHF General Mobile Radio Service (GMRS radio).
20.6w GPS Global Positioning System.
20.7 UHF Marine radio.
20.8 UHF Meteorology radio.
20.9 UHF Military radio.
20.10 UHF Personal Radio Service Radio (PRS radio).
20.11 UHF Police radio, Fire radio, Medical radio. Listen to online Police radio scanners and receivers.
20.12 UHF Radio Astronomy.
20.13 UHF Radio meteor scatter.
20.14 UHF Space weather.
20.15 UHF Satellites.
20.16 UHF Scanner Radio.
20.17 UHF SETI (Search for Extraterrestrial Intelligence).
20.18 UHF Space broadcasts.
20.19 UHF Space radio communications.
20.20 UHF TV DX (long distance Television).
21.
SHF Radio Communications and Emissions.
Super High Frequency SHF radio from 3 GHz – 30 GHz.
21.1 SHF Amateur Radio.
21.2 SHF Cosmic Microwave Background Radiation from outer space.
21.3 SHF Experimental Radio.
21.4 SHF LAN (Wireless Local Area Network).
21.5 SHF Meteorology radio.
21.6 SHF Military radio.
21.7 SHF Radar.
21.8 SHF Radio Astronomy.
21.9 SHF Rain scatter communications.
21.10 SHF Satellites.
22.
EHF Radio Communications and Emissions.
Extremely High Frequency EHF radio from 30 GHz – 300 GHz.
22.1 EHF Amateur Radio.
22.2 EHF Cosmic Microwave Background Radiation from outer space.
22.3 EHF Experimental Radio.
22.4 EHF Military radio.
22.5 EHF Radar.
22.6 EHF Radio Astronomy.
22.7 EHF Satellites.
23.
THF Radio Communications and Emissions.
Tremendously High Frequency THF radio from 300 GHz - 3000 GHz (0.3 THz - 3 THz).
23.1 THF Amateur Radio experimentation.
23.2 THF Satellites, Earth and space exploration.
23.3 THF Radio Astronomy.
23.4 THF Laser communications and emissions.
24.
Infrared Communications and Emissions.
IR.
Infrared from 3 THz – 420 THz.
24.1 Experimental Infrared Radiation.
25.
Visible light.
Light.
Visible light from 420 – 750 THz.
26.
Ultraviolet.
UV.
Ultraviolet from 750 THz – 30,000 THz.
27.
X-rays.
X-rays from 30 PHz – 30 ZHz.
28.
Gamma rays.
Gamma rays from 300 PHz – 300 EHz.
29.
Cosmic rays.
Cosmic rays from 30 ZHz – 3000 YHz.
30.
Online measurement converters.
30.1 Calculate antenna ERP and calculate antenna EIRP.
30.2 Convert antenna ERP to antenna EIRP.
30.3 Convert dBm, dBu, voltage and S-units.
30.4 Convert dBW and Watts.
30.5 Convert dBm and dBW.
30.6 Convert dBm, power and voltage.
30.7 Convert length units and distance units.
30.8 Convert power units.
30.9 Convert frequency units.
30.10 Convert wavelength units.
30.11 Find full wavelength, three quarter wavelength, five eighths wavelength, half wavelength and quarter wavelength.
30.12 Convert frequency to wavelength and convert wavelength to frequency.
30.13 What is the International date? What are the local regional times in the USA? What is the Universal time?
30.14 What are the current local times around the world?
31. Magnetic field strength measurement.
32
Radio frequency allocation plans.
32.1 Electromagnetic spectrum chart.
32.1a The Solar System.
32.2 ITU and how radio frequencies are allocated?
32.3 ITU map showing the 3 world radio regions.
32.4 World radio frequency allocation plans.
32.5 Australian radio frequency allocation plans.
32.6 Canadian radio frequency allocation plans.
32.7 New Zealand radio frequency allocation plans.
32.8 Papua New Guinea radio frequency allocation plans.
32.9 UK radio frequency allocation plans.
32.10 USA radio frequency allocation plans.
33
Radio information and radio communication codes.
33.1 Information about Amateur radio clubs country by country.
33.2 Phonetic alphabet.
33.3 What is QSL?
33.4 What is RST?
33.5 What is SINPO?
33.6 What is the ten code? What is the 10 code?
33.7 What are the connections for XLR connectors?
33.8 What are Q codes?
This ALL FREQUENCY DATABASE was initiated as a result of the following email question from Andrés Alonso López in Spain asking where to find information about radio stations and radio signals.
25 July 2009
To- Somaliahamradio@yahoo.com
From- Andrés Alonso López, Spain.
Hello Sam,
My name is Andrés, 26 years old and I am from Southern Spain... yes, 45ºC today... uff. Well, in Somalia you will also know what is HOT...!!.
I just started in the hobby of radio a few months ago.
Everything started because I heard some Arab stations in the FM band on a normal kitchen radio one afternoon and I got shocked, WHAT IS THAT...??-, I thought.
I started reading and getting information on the Internet.
Soon I bought a portable receiver called DEGEN 1103 with which I started doing DX-FM (Listening to far away Distant FM stations) with a 5-element RKB logarithmic antenna.
I HEARD 33 DIFFERENT ALGERIAN STATIONS on one hot afternoon as a result of good tropospheric conditions in the Earth’s atmosphere.
HERE YOU CAN SEE TWO VIDEOS I MADE:
http://www.youtube.com/watch?v=IVCVpeEDuxU
http://www.youtube.com/watch?v=ABqS4DQkDyU
Recently I have been hooked by LW (Long Wave) NDB (Non Directional Beacon) hunting.
In my noisy environment I have heard 50 different Non Directional Radio Beacons from all over Spain and a few from Algeria.
Regarding Short Wave... well, that's where I've come to know your webpage.
Since I started this hobby it's always caught my attention to wonder about what are these noises I hear on radio?
Short Wave radio has sounds like helicopters or very fast Morse code etc.
Now I know they are RTTY (Radio Teletype) and other digital radio transmissions.
I was trying to get more information about utility radio listening (utility stations like ships, aircraft, military, navy, army, air force, space, two way commercial communications services, spy broadcasts, illegal communications, Non Directional Radio Beacons, unknown transmissions, satellites, Morse code transmissions) when I entered Somalia Ham Radio website and saw all this loads of information that you provide and I just had to try and I surprisingly got:
2680 kHz, 4331 kHz 4XZ Haifa Radio, Israel. On Morse code sending V V V DE 4XZ. Heard at 0233 UTC with reception report on 4331 kHz of SINPO 12111 and reception report on 2680 kHz of SINPO 22222 respectively.
3330 kHz CHU Ottawa (Canada). Time signal. Not difficult to hear the tics-tacs, but really difficult to understand a word of what the man say when they announce the station or time.
4219 kHz, 12 652 kHz, 12639 kHz TAH Istanbul Radio on Morse code (thank you for letting me know).
10000 kHz Call sign Observatorio Nacional de Rio de Janeiro (Brazil) Time signal station. I'm so glad I got this.
12614 kHz XSQ Guangzhou Radio, China. On Morse code at 2348 UTC, SINPO 11121
However, there are many many more that I don't know what they are. So, please I urge your help for if you can identify them and let me know. Like me, as you really like this, possibly it would not be a pain (aren’t I right...?. LOL). I enjoy everything that moves in Shortwave, and if I don't know what it is I get even more curiosity and enjoyment listening.
Can anyone help identify these?
2062 kHz unknown the very same as on 12701 kHz at 0141 UT.
2116 kHz unknown RTTY-like reaching S-3 out of 5 occasionally at 0143 UT.
2464 kHz unknown fast Morse-like digital mode repeating over and over the same (S-4) at 0145 UT.
3090 kHz unknown sound like a time signal S2 at 0210 UT but I can’t find anything for this frequency on the Internet.
4219 kHz LQW is below the signal of TAH and appears every 30 seconds or so a Morse saying "DE LQW". It does not belong to TAH apparently because it is in higher in frequency. I double checked.
4445 kHz pi-pi-pi-pi-piii, pi-pi-pi-pi-piii (like a time signal) and from time to time a long piiiiiiiiiiiiiiiiiiii, then again the same time signal-like sounds. I see the only time signal that has ever been there is from Philippines. But is it still active...?. Can you help, please?
7038 kHz dot-dot-dash, dot-dot-dash I hear this (dot-dot-dash, dot-dot-dash) over and over, or could be two dashes and very long SITOR tone. I have no idea of what it is. What I can assure you is that below that signal there was a weak ... (S) fading in and out, sometimes even impossible to hear.
8636 kHz UED or STD coastal station transmitting CQ DE UED or CQ DE STD, then SITOR tones for a couple of minutes or so, then again the identification.
12586 kHz WLO coastal station transmitting WLO, SINPO 12211 at 0029 UT.
12701 kHz unknown the very same as 12730 kHz at 2337 UT.
12730 kHz unknown fast Morse-like digital mode reaching S-4 out of 5 occasionally at 2336 UT.
AND NOW THE QUESTION OF THE MILLION DOLLARS, Sam, where do you get all this information, because I have been on Internet searching for a couple of days and... nothing.
Is there any websites where I can learn to identify the utility stations?
I have just bought a pa0rdt active antenna that I am about to receive soon with the purpose of NDB's in mind specially. I am also doubting which rig to buy an Icom R-7200 for its IF-DSP filtering or a Perseus SDR... would you like to comment about this?
Regards and best wishes
Andrés Alonso in Spain.
REPLY from Sam Voron VK2BVS, 6O0A in Sydney, Australia.
8 October 2009.
Hello Andrés,
Thank you for your question that has initiated this database project. It will direct you to the databases I know.
I welcome emails from readers who can answer any of Andrés questions.
You said you have heard 50 Spanish Non Directional radio beacons on a noisy long wave band.
I had a small noise between 200 – 300 kHz that came from a 240 volt to 13 volt switching power supply.
I now use a 240 volt to 13 volt transformer power supply with no noise and I was able to hear new Non Directional radio beacons in the middle of the day including the largest distance I heard so far at midday.
272 kHz LHI Lord Howe Island, Pacific Ocean, Australia at 12.50 pm Sydney local time, a distance of 779 km (484 miles) north east of Sydney, Australia. LHI Lord Howe Island uses a 200 Watt transmitter.
You asked about the Perseus SDR radio versus the Icom R-7200
The Perseus Software Defined Radio (SDR) receiver turns a computer into a radio receiver.
THE ADVANTAGE of the Perseus SDR Software Defined Radio receiver is it will receive as low as 10 kHz.
THE DISADVANTAGE of the Perseus SDR radio is outlined in a review of the Perseus Software Defined Radio (January 2008) “The SDR evolution is going at a fast rate nowadays but they can't match a conventional receiver in terms of sensitivity yet”.
“In the Perseus SDR the best sensitivity is achieved with Preamp Off and Preselector set to either on or off. Now 1.3 μV is not bad, but when DX-ing weak signals on Medium Wave in daytime in a very quiet location it simply isn't enough so an external 10dB preamplifier is needed. The Perseus is marginally more sensitive than the SDR-IQ (-102 dBm or 1.8 μV).” http://www.kongsfjord.no/bm/Perseus%20SDR.pdf.
THE ADVANTAGE of the Icom R-7200 conventional radio receiver is it also has a transmitter and the receiver preamplifier works on long wave.
THE DISADVANTAGE of the Icom R-7200 as a conventional radio receiver is it only goes down as low as 30 kHz (it does not cover the interesting radio signals between 0 – 30 kHz) and it does not have FM reception (FM is used on 25 – 26 MHz for radio station studio to transmitter FM links, 27 MHz FM for CB radio and 29 MHz FM for amateur radio). http://www.eham.net/reviews/detail/6933
Another question is how to start a radio station and that is answered by the photos on each page of the database. The first photo is below.
73,
Sam
26 October 2009.
Software Defined Radio (SDR) Receiver Review from Spain.
Andrés reviews the Perseus SDR radio receiver.
Sam, that's simply incredible!. All the job you have done to answer my beginner question. A GREAT THANKS TO YOU. Persons like you are the ones who encourage others to continue with their interest in the hobby. THANKS.
I'm glad to tell you that I am advancing in the hobby.
I have given up my life passion in amateur Astronomy.
I have sold my telescopes, eyepieces, equatorial mount and all that made me happy.
The reason is I now dedicate so much of my free time to radio (when my family obligations allow) and I don't want to be at night in the cold anymore, as simple as that.
Being at home, warm and enjoying distant signals from the whole world and expecting to find something special makes you enjoy nearly as much.
I finally bought the Perseus SDR receiver.
I will not regret that. Sam, it's an outstanding piece of equipment.
You can record 1600 kHz of the radio band on your computer and then examine the recording the next day, or whenever.
It doesn't record "what you hear" (on one frequency), it records the whole band (all the 1600 kHz bandwidth).
I can program the computer so when I am in bed, it switches the receiver on at 0500 UTC and the Perseus radio starts recording, and later the computer will switches off the Perseus radio receiver.
When I get up in the morning the laptop is off as if nothing had happened since I left it last night but when I open Windows there is it - a file recording from the radio (while I was sleeping).
I use that file to search for Trans-Atlantic signals on Medium Wave and Non-Directional Beacons (NDB).
Now I have heard about 200 different NDB's with the Perseus radio (the filtering capacity of 20 Hz and graphics on screen help a lot), including some trans Atlantic radio signals from Greenland, Canada and Puerto Rico.
I am also involved in Long Wave digital modes like DGPS and NAVTEX.
I am in a Yahoo group called NDB list where we include our results that are transferred to this page https://rxx.classaxe.com/en/reu/signals
On Shortwave I heard 12000 kHz CVC Christian Radio from Darwin, Australia on 18th October 2009 at 1453 UTC with three hours left of daylight which is my distance record up to now.
Well, Sam. I end by thanking you again for all this interest you have taken in your reply to me and I invite you to contact me with ANY question that you may have about radio in this part of the world or anything else where I can help. I will keep an eye on your webpage to see the future updates and information added, but now is very complete in regards to all my interests.
Great regards,
Andrés Alonso.
Cuevas del Almanzora, Spain.
How to start a radio station in Somalia.
Bosasso sea port, North East Somalia (known later as the Puntland State of Somalia).
The Sea Port of Bosasso in July 1993, North East Somalia.
Two Australian volunteers Sam Voron VK2BVS, 6O0A from Sydney, Australia and Abdikarim Nur Mohamud (who would qualify to gain the Somalia amateur radio call sign 6O0W) from Melbourne, Australia arrived in Bosasso, Somalia with donated short wave radio broadcasting equipment in July 1993.
The first task was to meet officials in Bosasso and then find the best place to build the radio station by surveying the towns along the North East Somalia highway from Bosasso in the north to Galkayo in the south.
There had never been a radio broadcast station in North East Somalia before 1993 (Known from the 1st August 1998 as the Puntland State of Somalia ).
This first radio station would result in many more in the years that followed.
The radio opened the path to a new media industry and in 2009 many new radio stations operate across Somalia.
(Photo Sam Voron 6O0A, VK2BVS).
Index https://sites.google.com/site/somaliaamateurradio/index1
Contact: Sam Voron VK2BVS, 6O0A.
Email somaliahamradio@yahoo.com
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