Below is my log for 17-20 Sept. All times UTC (local minus 8 hours).
Equipment, hand-held Yupiteru MVT-7100 scanner with approx.
1.5 metre loaded whip antenna (Diamond RH-205) a few metres above sea
level.
chA6 audio (87.75) was rendered inaudible by a local FM station on
88.0 MHz
17 Sept
0750-
up to 37.5 Asian comms.
0930
49.75 C1 video
evening TEP
1100-
49.75 C1 video (strong !)
50.018 CW beacon, JA6YBR
1109-
57.75 C2 video (2nd strongest)
1120-
55.249 A2 video (60 Hz)
1155-
65.752 C3 video
65.750 C3 video
(after 1155 UTC all signals with rapid fade, "sleigh-bell" sound)
1200
56.25 C1 audio
48.250 E2 video
1206
64.25 C2 audio
1208- 1245
77.250 C4 video
1222-
48.2499 E2 video
1222- 1318
85.2507 C5 video (weak)
1227
61.250 A3 video (60 Hz)
1245- 1318
77.25 A5 video (60 Hz) overriding C4!
81.75 A5 audio: Chinese! (Taiwan? Korea ??)
1252
83.2498 A6 video (60 Hz) (?)
55.2396 E3 video
55.2495 E3 video
55.2499 E3 video (main tx)
55.2604 E3 video
1300
48.2512 E2 video, Limbang, E. Malaysia
48.2396 E2 video
48.2604 E2 video
1318
67.250 A3 video (60 Hz)
72.25 C3 audio
1415
only 49.75, 57.75 and 65.75 still in.
(also 33.00 continuous data tx, JA)
18 Sept
0100
33.00 continuous data tx, JA
35.58 AM, BBC harmonic Thailand
0340
49.75 C1 video (gone by 0540)
48.2500 E2 video (main tx)
48.2396 E2 video
48.2604 E2 video
0820, 0930
49.75 C1 video (gone by 0945)
1100
no DX - some magnetic disturbance
evening TEP
1415 -1450
49.75 C1 video back, with
rapid fade, "sleigh-bell" sound
19 Sept
0030
37.4
MUF to Asia
0137 -0941
49.75
C1 video (in all day and strong!)
0137
35.58
AM, BBC WS
0250
36.68
FM, "2 tone" Costa Rican pager
0500
49.750 very unstable tx
in mess of C1 video
50.010 CW beacon, JA2IGY
50.018 CW beacon, JA6YBR
0510
49.75 briefly faded out
but JA beacons still in.
0713
34.505 AM?, OM EE accent
(Indian?)"...alpha...over"
0727-
35-39MHz wall-to-wall Asian comms.
0739
46.172 RTQ0 video, weak
(F2 b/s)
0811
55.249 video, weak
0823
50.010 CW beacon, JA2IGY
50.018 CW beacon, JA6YBR
50.024 CW beacon, JA1ZYK,
weak
50.027 CW beacon, JE7YNQ,
weak
evening TEP (all signals with rapid
fade, "sleigh-bell" sound)
1059-
49.75 C1 video, strong
55.2492 ? video
55.2498 ? video
56.25 C1 audio
57.75 C2 video (2nd strongest)
61.250 A3 video (60 Hz)
64.25 C2 audio
67.25 A3 video (60 Hz)
77.250 C4 video
85.25 C5 video (very weak)
1107
59.2500 R2 video (very weak)
48.2396 E2 video
48.2604 E2 video
67.2502 A3 video (60 Hz)
67.2600 A3 video (60 Hz)
1116
71.75 A3 audio
1119- 1354
77.250 C4 video (also 77.240, 77.246, but
no 77.260)
1125 -1304
85.250 C5 video (very weak) - also 85.2507
1127
55.2501 A2 video (60 Hz), main tx, strong
55.2486 A2 video
1131
65.75 C3 video (may have been in earlier):
65.7431, 65.7439, 65.7459,
65.7476, 65.750 (mess),
65.7524, 65.7598.
1145
72.25 C3 audio
48.250 E2 video, slow fade
55.2498 A2 video (60 Hz) main,55.2506, 55.2483,
55.2511
59.75 A2 audio: drama in
Asian language; at 1158 two programs, one in US EE.
61.2498 A3 video
55.73 FM STL in JA, OM in
JJ
1206
48.2512 E2 video, Limbang, E. Malaysia
48.2498 E2 video, strong
1215
62.2499 E4 video
53.75 E2 audio
50.010 CW beacon, JA2IGY
50.018 CW beacon, JA6YBR
1239
55.2395, 55.2484, 55.2604, video
1245
53.75 E2 audio: Thai
62.2392, 62.2488, 62.2498, 62.2598 & 62.2601 strong, E4 video
60.75 E3 audio
67.75 E4 audio
1258
60.75 E3 audio: Thai, 2 programs,
@1301 one parallel to 53.75.
1304
55.73 FM STL in JA,
OM in JJ
57.47 FM STL in JA,
weak
1307
59.2559 ? R2, weak
1354 -1409
77.25 A5 video (60Hz)
81.75 A5 audio
60.75 E3 audio: drama,
Thai
62.2392, 62.2399, 62.2489, 62.2497 E4 video
1404
55.250 (2 txs) E3 video, strong, also 55.2395, 55.2603.
1409
still 48.25, 49.75 strong!, 55.25, 57.75, 64.25, 65.75
1520
only 48.25, 49.75, 55.25, 57.75, 65.75
1555
49.75 still in
20 Sept
0100
36.68 FM, "2 tone" Costa Rican pager, MUF to Asia 38 MHz
0220 -0250
49.75 C1 video
0250
36.68 FM, "2 tone" Costa Rican pager, strong.
Relative signal strengths of evening TEP DX, at the base of the scanner
antenna:
| 48.25 | E2, Thailand | 32 dB |
| 49.75 | C1 | 32 dB |
| 55.25 | A2/E3 | 20 dB |
| 57.75 | C2 | 20 dB |
| 65.75 | C3 | 10 dB |
| 67.25 | A4 | 3 dB |
| 77.25 | C4/A5 | 10 dB |
| 85.25 | C5 | 0 dB |
I think it's a reasonable bet that, except for large magnetic disturbances
(A
index > 40), evening TEP MUFs near 80 MHz are a nightly occurrence
in northern
Australia during the equinoxes when the solar flux reaches 170-200.
So rather
than wait for that rare intense Es link-up in October or November I
would
encourage other interested Australian DXers to take a short vacation
to the
tropics during the equinox to sample this otherwise rare phenomenon.
I also logged an FM station in Denpasar, Bali on 99.15 MHz via tropo
at
1345 UTC on 19 Sept, at a distance of 800 miles. The receiver was a
Panasonic RF-B65 PLL portable with just its own whip antenna 1.5 metres
above ground.