During a brief stay in Broome, Western Australia (18 S, 122 E), about 1000
miles north of my usual QTH, I logged some evening TEP VHF DX up to 85.25
MHz, mostly from China (channels C1, C2, C3, C4, C5). There were also, as
yet unidentified, system M signals as high as chA5 (77.25/81.75) and chA6
video (83.25), and Thailand on channels E2, E3 and E4.

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.