Klingenfuss Publications

Klingenfuss Radio Monitoring

www.klingenfuss.org


"Secret" frequencies for perfect SDR fun
Up-to-date frequencies, schedules, and codes for 2019
Decoding of professional digital data systems on Kiwi-SDR and Web-SDR

For 50+ years, we've been the world's leading publisher of books and databases for professional shortwave (HF) radio monitoring. Click here for dozens of sample pages of our latest products and here for hundreds of fascinating live radio monitoring screenshots. Read our illustrated introduction to digital data decoding via internet-controlled Software-Defined Receivers • Kiwi-SDR • Web-SDR • Open Web RX here!

Convenient HF radio monitoring on superb remote receivers

In urban areas all over the world, the radio spectrum is polluted, and that makes HF reception impossible in certain places. Fortunately, hundreds (!) of Kiwi-SDRs worldwide covering the complete 0-30 MHz spectrum have been made accessible via Internet here.


HFDL transmission with perfekt PSK aggregates - note the pilot tone! -
via brandnew station Muan Air, South Korea, activated 27 MAR 2019,
up to and down from aircraft via a Kiwi-SDR in ... Japan
Click to enlarge!

What's more, many radio amateurs, radio clubs, researchers, and universities have made available their SDRs e.g. here.


Decoding of navigational warnings in Vietnamese in SITOR-B
with the well-known digital modes program FLDIGI by W1HKJ
Click to enlarge!


State-of-the-art remote monitoring
of a complex STANAG 4285 PSK aggregate signal
received on a powerful Kiwi-SDR in Las Cruces NM
connected via a 768 kB/s DSL Internet access to Hagelloch
and perfectly decoded - see the FEC quality! -
with free digital data decoding software SIGMIRA!
All those fascinating digital data signals published on this webpage
are perfectly identified and listed in our latest publications ...
Click to enlarge!


Perfect reception of a satellite picture
transmitted by the Japan Meteorological Agency
received on a powerful Kiwi-SDR in South Korea
Typhoons Krosa and Lekima ...
Zoom on Krosa
Click to enlarge!

Contrary to the situation in the decreasing world of HF broadcasting, professional worldwide communication on shortwave - i.e. digital data transmissions of utility radio stations! - has been a superb success for decades. Global technical standards have been agreed upon many years ago, and innovative procedures and protocols resulted in a strong increase in the intelligent use of worldwide shortwave frequencies. Just think of ACARS/HFDL that currently handles more than 170,000 messages - per day! Then, there are thousands of HF networks using ALE. What's more, we've got hundreds of CODAN and PACTOR networks worldwide. For maritime traffic on MF and HF there is worldwide NAVTEX, DSC, and NBDPT. And so on ...


Real radio monitoring using the very latest digital data decoding software
The new go2monitor / go2signals decoder - at a cost of some 30,000+ EUR -
runs up to 32 classification / recognition / decoding / recording channels
within a large 1,600 kHz bandwidth of e.g. the Perseus SDR
Synchronization to professional PSK modes such as MIL-STD-188-110 A/B is very fast
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI
Click to enlarge!

HF is the only worldwide communications medium that is totally free of transmission time charges - an important factor today in the era of bankrupt economies, tight budgets and heavy cost control. It saves companies and organizations a major portion of their communications budget every year to use on more important things, because - once the equipment is installed - there are virtually no on-going costs.


Full digital radio broadcast on HF received on a state-of-the-art SDR
Pretty strong PSK aggregate signal carrying a DRM broadcast
Brandnew 2019 edition of our Perseus Frequency Database
Click to enlarge!

There is not - and there will never be! - Internet access available all over the world. Says Horst Weise DL4SBK after his recent trekking trip to Ecuador: "I have been able to keep me very well informed with my 40 Euro portable shortwave receiver!" Now consider the absurd decision by leading international broadcasters to drastically reduce their worldwide shortwave transmissions ... or to shut down HF completely! Just how do BBC, Deutsche Welle, Voice of America and the like get their message - and mission! - across the border to the poor people that is most in need of independent information - and international support?


State-of-the-art digital data signals have been tested since 2013
by innovative broadcast stations such as the Voice of America ...
This screenshot zooms on a MFSK emission on 6067.1 kHz
Center frequency of the ISB transmission was 6070.0 kHz
Click to enlarge!

HF spectrum monitoring and control of harmful interference has been neglected for a long time. Today, up-to-date information on real spectrum occupancy - especially when it is based on real-time data such as ours - is invaluable for the planning of modern HF radio systems. Within living memory, bureaucratic government authorities - and, in particular, the International Telecommunication Union - have had absolutely nothing to offer in this field. The best data quality has been supplied from locations where we held instruction courses, e.g. Singapore (Yio Chu Kang monitoring station). By consequence, leading radio monitoring services routinely come back to us because we have been monitoring the HF spectrum continuously for 50 years.


Decoding with a professional WAVECOM W-CODE system
of a complex STANAG 4285 PSK aggregate signal from Martinique
received on a powerful Kiwi-SDR in South Africa
Click to enlarge!

Right from the start in 1968, we have strived for the Asian approach to company qualities:

By consequence, our products have been distributed - for decades! - by leading professional equipment manufacturers and amateur radio organizations worldwide - see our worldwide dealers list here.

American Radio Relay League
ARRL Store DEC 2018

The selection from our long list of professional customers reads like the Who is Who? in this fascinating field. The continuous correspondence with our worldwide reading public ensures our manuals to continue to be the standard references of both professional monitoring services and non-professional radio listeners.

A few products from our 1968-2019 archives

Click to enlarge!

A few products from our 1968-2019 archives

Click to enlarge!

We are a truly international publisher and, by consequence, all our products are in English. We do business worldwide and we do speak several languages: you may write us in Creole, English, French, German, Indonesian, Italian, Malay, Portuguese, or Spanish. The global coverage of our data bank is secured by regular overseas monitoring missions to the more interesting places in this world such as Alaska, Azores, Brunei, Canada, Djibouti, Dominica, Guadeloupe, Guatemala, Indonesia, Madagascar, Malaysia, Martinique, Mauritius, Philippines, Reunion, Rodrigues, Sabah, Saint Lucia, Sarawak, Singapore, Somalia, Venezuela, and Yemen!

Japan Shortwave Monthly
By Takahito Akabayashi
Report in Japanese on our brandnew 2019 editions

Where we are ...

GPS UTM 32U
0500.886 5376.376

Klingenfuss Publications and Klingenfuss Radio Monitoring are located in the countryside, far away from industrial noise and pollution ...

Panoramic view of Hagelloch
A superb remote location like this one is a basic prerequisite
for excellent HF reception conditions - and for a good life!
The mountains in the background are the Schwaebische Alb,
peaking around 1,100 metres altitude
Position Em Knui, altitude 472 metres
18 OCT 2014, 1553 UTC

Click to enlarge!

Winter
17 JAN 2016, 1158 UTC
Click to enlarge!

Spring
9 APR 2011, 0920 UTC
Click to enlarge!

Summer
11 AUG 2018, 0554 UTC
Click to enlarge!

Autumn
16 OCT 2016, 0901 UTC
Click to enlarge!

... a few kilometres outside of Tuebingen, the most beautiful city in Germany with the highest percentage of young people - and always on the very top of the quality-of-life index throughout the nation!

Tuebingen
Neckar riverside
Medieval centre with Stiftskirche, founded in 1188
7 JUL 2012, 1200 UTC
Click to enlarge!

Tuebingen
Market square and town hall
23 MAY 2007, 0613 UTC
Click to enlarge!

Tuebingen
View from the Count Palatine Castle, dominating the medieval town centre
22 NOV 2014, 1104 UTC
Click to enlarge!

Autumn
Vineyard in the countryside near Wendelsheim
In this extremely sunny region, we experience a Mediterranean climate
and wine has been grown for centuries
26 OCT 2019, 1251 UTC
Click to enlarge!

Chapel of Wurmlingen
One picture per month
Times here are local times, not UTC
Click to enlarge!

Cherry tree in the Hirschau vineyard
One picture per month
Times here are local times, not UTC
Click to enlarge!

Latest pictures and digital panoramas

Ammer valley and Chapel of Wurmlingen
26 OCT 2019, 1154 UTC
Click to enlarge!

Wine grower's hut in the Wendelsheim vineyard
17 OCT 2019, 1322 UTC
Click to enlarge!

Autumn colours in the Hirschau vineyard
17 OCT 2019, 1317 UTC
Click to enlarge!

Neckar river near Hirschau
29 SEP 2019, 0940 UTC
Click to enlarge!

Damson tree in the Wendelsheim vineyard
28 SEP 2019, 0914 UTC
Click to enlarge!

Lake of Fairytales in the Pfaffenberg Nature Reserve
25 AUG 2019, 0843 UTC
Click to enlarge!

Boating on the Donau river near Inzigkofen
22 AUG 2019, 1146 UTC
Click to enlarge!

Silver-Washed Frillary (Argynnis paphia)
and two species of Jersey Tiger
Location Spitzberg Nature Reserve
9 AUG 2019, 1223 UTC
Click to enlarge!

Jersey Tiger (Euplagia quadripunctaria)
Location Spitzberg Nature Reserve
9 AUG 2019, 1221 UTC
Click to enlarge!

Grass Snake (Natrix natrix)
Location Spitzberg Nature Reserve
9 AUG 2019, 1204 UTC
Click to enlarge!

Mating pair of Ruddy Darter (Sympetrum sanguineum)
Location Spitzberg Nature Reserve
6 AUG 2019, 1106 UTC
Click to enlarge!

Tuebingen
Stand-up paddling on the Neckar river
4 AUG 2019, 0836 UTC
Click to enlarge!

Wheat field under the Chapel of Wurmlingen
19 JUL 2019, 1131 UTC
Click to enlarge!

Tuebingen
Locality Unterjesingen (left) and Chapel of Wurmlingen (right)
31 MAY 2019, 1052 UTC
Click to enlarge!

Tuebingen
Neckar riverside with Hölderlin Tower and typical punt boats
20 APR 2019, 1059 UTC
Click to enlarge!

Orange Tip (Anthocharis cardamines)
Location Hirschau vineyard
11 APR 2019, 1222 UTC
Click to enlarge!

Tuebingen
Neckar riverside
23 MAR 2019, 1319 UTC
Click to enlarge!

Tuebingen
Neckar riverside and medieval old town
with Stiftskirche, founded in 1188
16 FEB 2019, 1123 UTC
Click to enlarge!

Chapel of Salmendingen
14 FEB 2019, 1140 UTC
Click to enlarge!

Neckar valley - Wurmlingen - Ammer valley
Position Chapel of Wurmlingen
31 JAN 2019, 1233 UTC
Click to enlarge!

8 minutes after sunset
16 JAN 2019, 1603 UTC
Click to enlarge!

Locality Hirschau (left) and Chapel of Wurmlingen (right)
14 NOV 2018, 1344 UTC
Click to enlarge!

Chapel of Wurmlingen
14 NOV 2018, 1326 UTC
Click to enlarge!

Tuebingen
Chapel of Wurmlingen (left) and Locality Unterjesingen (right)
14 NOV 2018, 1322 UTC
Click to enlarge!

Morning colours over the Neckar valley
The mountains in the background are the Schwäbische Alb,
peaking around 1,100 metres altitude
Location Hagelloch
10 NOV 2018, 0646 UTC
Click to enlarge!

Chapel of Wurmlingen (right) and Locality Wurmlingen (left)
07 NOV 2018, 1258 UTC
Click to enlarge!

Schönbuch Tower near Herrenberg
Spectacular construction
6 NOV 2018, 1107 UTC
Click to enlarge!

Sunset over the Black Forest
Position Dreifaltigkeitsberg
21 OCT 2018, 1555 UTC
Click to enlarge!

Thyssen-Krupp Tower near Rottweil
The tallest elevator test tower in the world: 246 metres!
Germany's highest viewing platform at 232 metres ...
Position Dreifaltigkeitsberg
21 OCT 2018, 1426 UTC
Click to enlarge!

Just above the sea of fog ...
21 OCT 2018, 0939 UTC
Click to enlarge!

Just above the sea of fog ...
21 OCT 2018, 0934 UTC
Click to enlarge!

Thyssen-Krupp Tower near Rottweil
The tallest elevator test tower in the world: 246 metres!
Germany's highest viewing platform at 232 metres ...
200,000+ visitors since opening in October 2017!
Panorama Schwäbische Alb - Alps - Black Forest
21 OCT 2018, 0924 UTC
Click to enlarge!

Schwäbische Alb
Position Chapel of Salmendingen
11 OCT 2018, 0950 UTC
Click to enlarge!

Zoom into paradise ... Peaches (Prunus persica) near Hagelloch
11 AUG 2018, 0854 UTC
Click to enlarge!

Zoom into paradise ... Cherries near Hagelloch
16 JUN 2018, 1058 UTC
Click to enlarge!

Tuebingen
Neckar valley - Wurmlingen - Ammer valley
Position Chapel of Wurmlingen
17 APR 2018, 1113 UTC
Click to enlarge!

Chapel of Wurmlingen (barely visible) and Hagelloch
Location Rauter Roi
7 APR 2018, 0557 UTC
Click to enlarge!

Tübingen in the afternoon sunlight
The mountains in the background are the Schwaebische Alb,
peaking around 1,100 metres altitude
Position Steinenberg Tower
5 APR 2018, 1538 UTC
Click to enlarge!

Tuebingen
Chapel of Wurmlingen (left) and Locality Unterjesingen (right)
21 FEB 2018, 1301 UTC
Click to enlarge!

Hagelloch
25 DEC 2017, 1039 UTC
Click to enlarge!

Schwäbische Alb
Position Chapel of Salmendingen
13 MAY 2017, 1539 UTC
Click to enlarge!

Local carnival in Hirschau
Perfect weather, as usual ...
27 FEB 2017, 1338 UTC
Click to enlarge!

43 traditional groups and thousands of spectators
27 FEB 2017, 1249 UTC
Click to enlarge!

Red and green smoke makes you cough
27 FEB 2017, 1209 UTC
Click to enlarge!

Awful witch
27 FEB 2017, 1307 UTC
Click to enlarge!

Big fun - and sweeties! - for the kids
27 FEB 2017, 1308 UTC
Click to enlarge!

Pretty girl
27 FEB 2017, 1321 UTC
Click to enlarge!

Sleepy girl
27 FEB 2017, 1348 UTC
Click to enlarge!

Common Buzzard on his lookout point
In North America, this chap is called a "Hawk"
Location Hirschau vineyard
16 FEB 2017, 1336 UTC
Click to enlarge!

Hagelloch
Position Em Knui
22 JAN 2017, 1122 UTC
Click to enlarge!

Tuebingen
Chapel of Wurmlingen (left) and locality Unterjesingen (right)
5 JAN 2017, 1312 UTC
Click to enlarge!

Neckar valley - Wurmlingen - Ammer valley
Position Chapel of Wurmlingen
15 DEC 2016, 1317 UTC
Click to enlarge!

Red Squirrel (Sciurus vulgaris)
This funny chap fills his caches for the winter
Location Em Knui
16 OCT 2016, 0834 UTC
Click to enlarge!


Arising Anvil Cloud - Cumulonimbus capillarus incus
after an extremely hot day (38° Celsius)
Location Schäufelesäcker, near Hagelloch
28 AUG 2016, 1350 UTC
Click to enlarge!

Zoom on the astronomical clocks
27 FEB 2016, 0902 UTC
Click to enlarge!

Tuebingen town hall
The bottom clock shows the time
The middle is an astronomical clock with the zodiac signs
The upper clock shows the phase of the moon
Built by mathematics and astronomy professor Johannes Stoeffler in 1511 -
about 100 years before Johannes Kepler studied at Tuebingen University! -
his world-famous clock shows special astronomical events
such as solar and lunar eclipses as well
27 FEB 2016, 0901 UTC
Click to enlarge!

Schönbuch snow on the "short final approach" to Breitenholz
26 DEC 2014, 1102 UTC
Click to enlarge!

Family and friends - from 5 to 77 years old -
on the traditional 20 kilometres walk from Hagelloch
through the beautiful Schönbuch Forest National Park
to Breitenholz and back later in the dark,
for a four-hours feast on superb Swabian cuisine
26 DEC 2014, 1022 UTC
Click to enlarge!

Upper Donau valley
Gebrochener Gutenstein
Ruins of a medieval castle on top of a rock (centre)
23 DEC 2014, 1230 UTC
Click to enlarge!

Zoom on Gebrochener Gutenstein
23 DEC 2014, 1214 UTC
Click to enlarge!

Hohenzollern Castle
1 NOV 2014, 1302 UTC
Click to enlarge!

Hair ice
An extremely rare natural phenomenon ...
No - this is not a fungus!
It's simply frozen water!
These ice structures grow out of small pores in the wood
Hair ice grows only where there is no bark on a piece of rotten wood
Location Gehrenkopf near Hagelloch
18 JAN 2014, 1008 UTC
Click to enlarge!

Upper Donau valley
Ruine Gebrochener Gutenstein
14 OCT 2011, 1122 UTC
Click to enlarge!

11 minutes to sunset
4 JAN 2011, 1529 UTC
Click to enlarge!

Tuebingen
Locality Hirschau
24 DEC 2010, 1606 UTC
Click to enlarge!


Security information: This website does NOT use "cookies" and we do NOT cooperate with and/or link to data gangsters such as Facebook or Google Analyzer. We do NOT spy on our customers!


This website does not operate the sites that it links to, nor does it supply any of the pictures or content on those sites. Because of the dynamic nature of the Internet, we cannot be responsible for changes, misrepresentations, fraud or illegal content on the sites that we link.