Long Wave reception in Cork, Ireland (153-279 KHz)
approx 50 kms SE of Frankfurt
station is present at daytime but the signal is very weak.
Approx 40 kms E of Tours
a good signal, day and night.
Kaliningrad (Russian Baltic enclave)
only. Weak signal.
N coast of Morocco
only. Very weak.
just N of Berlin
||This station is present at daytime but the signal is very weak.|
a good signal, day and night.
SW of Birmingham
approx 50 kms NE of Munich
station is present at daytime but the signal is weak. Of the 3
German signals on the band, this seems to be the strongest one during
Monte Carlo / Trans World Radio
approx 50 kms NE of Marseilles
signal during the day. Good at night.
Kujawski, C Poland
signal day and night.
Co.Meath. Approx 40 kms NW of Dublin.
signal here on the South coast of Ireland. Suffers a lot at night from
interference from the Algerian station.
at night underneath the RTE signal.
Equipment - All signals
were heard using a Kenwood TS-140 radio and a 40 metre long wire
approx 5 m above ground level.
2) General Hi-Fi Radios - All signals heard on the Kenwood could also be heard on a small SONY 3-in-1 type Hi-Fi system. The SONY has an internal antenna (ferrite rod) which seems to work very well on Long Wave. This would suggest that perhaps any decent type of radio should be capable of giving good performance on Long Wave.
3) Noise - The biggest problem on Long Wave seems to be noise. Many of the signals are very strong but the amount of electrical and electronic noise can be very high. Computers, Televisions, some power supplies and some security systems can generate an awful lot of noise on the Long Wave band.
4) Daylight - The stations that can be heard during daylight hours (near midday) are shown in RED. The 3 German stations can also be heard but they are very weak and buried in the noise. If you live further East, like in the UK, then you may be able to hear them during the day. Near sunset, the stations shown in PURPLE start to appear and last until sunrise.
5) 252 khz - One of the most unusual features of the Long Wave band here in Cork is how strong the Algerian station is on 252 khz. Even though the RTE Radio 1 transmitter on 252 khz is only 260 kms away and has a very strong signal, the Algerian station can nearly always be heard underneath the RTE signal at night. It seems to be a lot stronger than other stations located approx 2000 kms away. One factor that may explain this is that most of the path from the transmitter in Algeria to Cork is over a sea path. Only 300 kms of the 1,900 kms is over land (NE of Spain) with the balance over the Mediterranean and Atlantic. (Note - Long Wave & Medium Wave signals travel a lot further over water paths due to the high conductivity of salt water).
6) 252 khz interference solution - If, for example, you live in the UK and you suffer from this interference problem on the RTE signal on 252 khz, there is a simple solution. Assuming that your radio has an internal antenna for Long Wave reception, then all you need to do is to rotate your radio. As you rotate it, you will find one point where the RTE signal will get weak. You will also find another point where the Algerian signal will get weak and the interference on the RTE signal should disappear.
© John Desmond 2007. Last Updated May 2007