POSTBAG

by Dan Robinson

During the golden days of shortwave broadcasting, there were more than a dozen stations on the air in Angola, in addition to the main government station in the capital Luanda. In the 1978 WRTH, 14 regional stations are listed, and one of them Emisora Regional da Cabinda, broadcasting from the enclave between Democratic Republic of the Congo and Congo Republic. This station was among the most rarely heard by listeners in North America, but occasionally atmospheric conditions permitted some decent reception of its 5,033 khz frequency which varied quite a bit. This reception took place in Levittown, Pennsylvania using a Hammarlund HQ-180A receiver — the recording has had a bit of noise reduction applied. You can hear the steady interval signal that the station used, consisting of a drum, before a national anthem and sign on announcements as “Aqui, Republica popular da Angola, Emisora Regional da Cabinda….”

by Dan Robinson

Not as much has been written about the history of broadcasting in Sierra Leone in comparison with other countries in Africa — see Wikipedia for this summary. The SLBC broadcast on shortwave on 3,316 khz, one of those odd frequencies that one remembers. Although the power of the station was 50 kw as of 1978 it was exceedingly difficult to hear, with the best time being in the afternoon/early evening in eastern North America. According to the World Radio TV Handbook of that year, the 250 KW transmitter that had been installed for use as a relay of international broadcasters was designated for 5,980 khz but it’s hard to recall any DX’ers ever reporting that frequency. Normal sign off according to the WRTH was 2335 UTC, a bit later on Saturdays.

This reception occurred in Pennsylvania, where I used a Hammarlund HQ-180/A receiver which had numerous capabilities for dragging difficult DX signals out of the mud due to its fine vernier tuning, notch filter, and multiple crystal filter bandwidths. You can hear “Leaving On a Jet Plane” and some talk by an announcer. There was heavy CW interference on the frequency — the 90 meter band in these days was no picnic and always presented a challenge in hearing the African countries that used it. Sierra Leone verified with an aerograme type letter, similar to verifications received from Voice of Kenya over in eastern Africa.