Japan on MW has been an interesting target for me since I started to listen to MW-signals from Asia. My first QTH in the Center of Finland was rather good for Asia during dark wintertimes. In the era of reporting and QSL-hunting (70´s ... 80´s) I got about 30 QSL-cards and letters from Japanese MW-stations (NHK and commercial stations). Before the current mf-allocation they were pretty easy to hear on their 10 kHz spaced channels. It took about 20 years to get these 30 stations verified. I think in my old logbooks are about 40 stations heard. Some examples of the QSLs at the picture.
In December 2009 I tested how many of them can be heard in about month in this deep solar minumum. I recorded almost daily total mw-band at several TOH´s for 5-15 minutes (including several recordings around 1320 utc to get the NHK2-IDs). All recording were preprogrammed beforehand at my King´s Village QTH. Some days the program crashed because of the electricity problems (at rural areas there are sometimes short power blackouts - usually 1 seconds or so...) so there were some periods of several days without recording. I have now explored majority of the recordings. It seems conditions favoured Japan as was expected - during this deep minimum and almost total darkness even in Southern Finland, conditions towards North-West, North and North-East are going on daily. Example of these conditions is KUMU Hawaii which could be heard almost daily in Scandinavia.
The count of the stations heard from Japan (NHK´s partly IDed only as "NHK1/2", partly rather definite ID as being the only NHK on the channel). Commercial stations were IDed by the company initials (usually, as an example "KBC Radio" 1413 JOIF). So during about 20 days recordings at around 11,12,13 and 14 UTC totally about 55 stations were heard. I could estimated that during the best days (like 8th December for example) one could get an ID of 30-40 stations during about 3 hours containing 4 recordings of 5 minutes each at the TOH and 1 minute at 1320 UTC! That is a difference - during 1900´s I had a TRIO 9R59DS receiver and some longwire antennas - now a Perseus SDR-receiver and a BOG antenna. So one can not compare the results of 1970´s - 1980´s to todays captures!
The list of the stations: freq station remarks 567 JOIK NHK1, Sapporo no call id 594 JOAK NHK1, Tokyo/Shobu no call id 648 JOIG NHK1, Toyama no call id 666 JOBK NHK1, Osaka 693 JOAB NHK2, Tokyo/Shobu 729 JOCK NHK1, Nagoya no call id 747 JOIB NHK2, Sapporo no call id(* 774 JOUB NHK2, Akita 792 NHK1, tent. Embetsu (//Hokkaido NHK) no call id 828 JOBB NHK2, Osaka/Habikino 837 JOQK NHK1, Niigata no call id 864 JOXR ROK Radio Okinawa, Naha/Nanjo 873 JOGB NHK2, Kumamoto 927 NHK1 936 JOTR ABS Akita Hoso, Akita 954 JOKR TBS Tokyo Hoso, Tokyo/Toda 963 JOTG NHK1, Aomori local news 990 JORK NHK1, Kochi no call id 1008 JONR ABC Asahi Hoso, Kyoto 1017 JOLB NHK2, Fukuoka 1053 JOAR CBC Chubu-Nippon Hoso, Nagoya/Kuwana-Shi 1071 JOFK NHK1, Hiroshima no call id 1107 JOCF MBC Minami Nihon Hoso, Kagoshima 1107 JOMR MRO Hokoriku Hoso, Kanazawa 1116 JODR BSN Niigata Hoso, Niigata 1134 JOQR NCB Bunka Hoso, Tokyo/Kawaguchi 1179 JOOR MBS, Mainichi Hoso, Osaka 1197 JOFO RKB, RKB Mainichi Hoso, Kitakyushu Fukuoka 1224 JOJK NHK1, Kanazawa no call id 1233 JOUR NBC Nagasaki Hoso, Nagasaki 1233 JOGR RAB Aomori Hoso, Aomori 1242 JOLF NBS Nippon Hoso, Tokyo/Kisarazu 1260 JOIR TBC Tohoku Hoso, Sendai 1269 JOJR JRT Shikoku Hoso, Tokushima 1278 JOFR RKB Mainichi Hoso, Fukuoka 1287 JOHR HBC, Hokkaido Hoso, Sapporo 1314 JOUF OBC Radio Osaka, Osaka/Sakai-Shi 1332 JOSF Tokai Hoso, Nagoya 1368 JOHP NHK1, Takamatsu Kagawa no call id 1377 JOUC NHK2, Yamaguchi 1386 JOJB NHK2, Kanazawa 1386 JOKB NHK2, Okayama 1395 RKC, Kochi Hoso, Sukumo Kochi 1413 JOIF KBC-Kyushu Asahi Hoso, Fukuoka 1422 JORF RF, RF Radio Nippon, Yokohama 1431 JOZF GBS, Gifu Hoso, Gifu 1440 JOWF STV, Sapporo TV Hoso, Sapporo 1467 JOID NHK2, Oita / NHK2 Hokkaido (** no call id 1494 JOYR RSK, Sanyo Hoso, Okayama 1503 JOUK NHK1, Akita no call id 1512 JOZB NHK2, Matsuyama no call id 1521 JOTC NHK2, Aomori no call id 1584 JOQG NHK1, Fukaura Aomori no call id 1593 JOQB NHK2, Niigata 1602 JOSB NHK2, Kitakyushu Fukuoka 1602 NHK2, Embetsu //747 Sapporo
*) Sapporo NHK 747 nowadays no call at 1320 only "NHK" **) poss. Different relays diff. Days, one day //Hokkaido channels
Ids: NHK usually at 1320 after the weather Some NHK1 with local programs before 11 utc Some NHK-stations "Ided" being the only one on the frequency Commercial stations Ids with company inititials with some exceptions (like "Radio Kansai 1395") 56 stations logged Dec 1 - 31 2009 (updated list after check 15th Jan.) Perseus sdr + 250 m BOG (under snow) to NE
DXing since 1970. More active with QSLs&reporting back in 1970´s-80´s, now active in listening on MW (Asia-Pacific, Latin America).
This blog will focus on DXing at King´s Village QTH and related activities.
Contact info: tk (dot) sdxl (dot) org