9A4ZM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving 9A4ZM, decoded by SO8OO in southeastern Poland. 25,925 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 107 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.
These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.
SO8OO decoded 25,925 FT8 messages attributed to 9A4ZM as the transmitting token by decoded message structure across 107 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (43%), followed by 20 m (21%) and 80 m (21%). Most decodes (53%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -1.3 dB.
Overview
Bands
Last attributed message: 2026-09-20 11:47 UTC
Observed FT8 message patterns
- Attributed sample
- 25,925 messages
- Active dates
- 107 UTC dates
- Estimated median S/N
- -1.3 dB
- Estimated 10th-90th percentile
- -13 to +10 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,583, moderate (-15 to -9 dB) 4,557, strong (≥ -8 dB) 19,785.
WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with 9A4ZM in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to 9A4ZM
The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.
- Attributed locator
- JN86 · 17,260 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 521 km (approx.)
- Last such locator decoded
- 2026-09-20 11:47 UTC
Other locator fields attributed to this token: JN61 (1).
A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.
Observed FT8 exchanges
S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.
| Time UTC | Band | 9A4ZM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-20 11:47 | 40m | 0 / - | DH2FW | - / - | 2 | Partial capture |
| 09-20 11:14 | 40m | -2 / - | SP6PST | - / - | 2 | Partial capture |
| 09-20 11:08 | 40m | -7 / -26 | UR5KJA | -10 / -15 | 6 | ✓ Full exchange observed |
| 09-20 11:04 | 40m | -4 / - | OP4F | - / - | 2 | Partial capture |
| 09-20 10:35 | 40m | -6 / - | DF3AS | - / - | 2 | Partial capture |
| 09-20 10:33 | 40m | -2 / - | DM6MK | - / - | 2 | Partial capture |
| 09-20 10:21 | 40m | -5 / - | DD3ZZ | - / -5 | 2 | ✓ Closing fragment |
| 09-20 10:18 | 40m | 0 / - | DA1XX | - / - | 2 | Partial capture |
| 09-20 10:06 | 40m | -8 / - | DM6MK | - / - | 2 | Partial capture |
| 09-20 10:04 | 40m | +2 / - | SN100PKP | -12 / -10 | 4 | ✓ Closing observed |
| 09-20 09:25 | 40m | -1 / - | IU8VUX | - / - | 2 | Partial capture |
| 09-20 09:19 | 40m | -6 / - | IU8VUX | - / - | 2 | Partial capture |
| 09-20 08:41 | 40m | -2 / - | F5SYC/P | - / - | 2 | Partial capture |
| 09-20 08:10 | 40m | 0 / - | SP8OBQ | - / - | 2 | Partial capture |
| 09-20 07:37 | 40m | - / +1 | GJ0KYZ | -12 / - | 2 | Partial capture |
| 09-20 07:35 | 40m | +6 / - | OE2AFX | - / -15 | 3 | ✓ Closing fragment |
| 09-20 07:32 | 40m | -1 / - | RI1FJZ | - / - | 2 | Partial capture |
| 09-20 07:28 | 40m | +1 / - | RI1FJZ | - / - | 2 | Partial capture |
| 09-20 07:00 | 40m | 0 / - | HK4OK | - / - | 2 | Partial capture |
| 09-20 06:40 | 40m | -2 / - | SP8LWA | - / - | 3 | Partial capture |
| 09-20 06:09 | 40m | +2 / - | F5NBU | - / - | 2 | Partial capture |
| 09-20 05:42 | 40m | - / - | SP9D | -4 / - | 2 | Partial capture |
| 09-20 05:41 | 40m | +3 / +10 | S58ET | -11 / -11 | 3 | ✓ Full exchange observed |
| 09-20 05:40 | 40m | +4 / - | 5S6SZW | - / -6 | 2 | Partial capture |
| 09-20 05:26 | 40m | -2 / - | RC3DN | - / - | 2 | Partial capture |
| 09-20 05:16 | 40m | +6 / - | F5NBU | - / - | 2 | Partial capture |
| 09-20 04:58 | 60m | +4 / - | OH1CMV | - / - | 2 | Partial capture |
| 09-20 04:52 | 40m | +10 / - | F5NBU | - / - | 2 | Partial capture |
| 09-20 04:47 | 60m | -5 / - | EA8DQE | - / -15 | 5 | ✓ Closing fragment |
| 09-20 04:43 | 40m | -3 / - | N0BUZ | - / - | 2 | Partial capture |
| 09-20 04:41 | 40m | -2 / -9 | UT0EP | -4 / - | 5 | Partial capture |
| 09-20 04:03 | 40m | -12 / - | F5NBU | - / - | 2 | Partial capture |
| 09-20 03:55 | 60m | -6 / - | IU5SCG | 0 / - | 4 | ✓ Full exchange observed |
| 09-20 03:19 | 80m | +8 / -19 | HI8R | -3 / -10 | 5 | ✓ Full exchange observed |
| 09-20 03:10 | 80m | +6 / - | HI8R | - / - | 3 | Partial capture |
| 09-20 02:48 | 80m | +8 / -19 | HI8R | -6 / -9 | 6 | Partial capture |
| 09-20 02:36 | 80m | +12 / - | HI8R | - / - | 2 | Partial capture |
| 09-20 02:30 | 60m | +5 / - | J48S | - / - | 2 | Partial capture |
| 09-20 02:23 | 60m | +6 / - | J48S | - / - | 2 | Partial capture |
| 09-20 02:10 | 60m | +4 / - | J48S | - / - | 2 | Partial capture |
| 09-20 02:01 | 60m | +2 / - | J48S | - / - | 2 | Partial capture |
| 09-20 01:59 | 80m | +8 / - | HI8R | - / - | 3 | Partial capture |
| 09-20 01:50 | 40m | - / -6 | RQ3H | -1 / - | 2 | ✓ Closing fragment |
| 09-20 01:44 | 80m | - / -12 | EC3A | -6 / - | 2 | Partial capture |
| 09-20 01:43 | 80m | +13 / - | RZ3BP | - / -12 | 3 | ✓ Closing fragment |
| 09-20 01:35 | 60m | +4 / - | J48S | - / - | 2 | Partial capture |
| 09-20 01:25 | 60m | +4 / - | J48S | - / - | 2 | Partial capture |
| 09-20 01:15 | 60m | +2 / - | J48S | - / - | 2 | Partial capture |
| 09-20 01:07 | 40m | - / -9 | R3PMW | -1 / - | 3 | Partial capture |
| 09-20 01:03 | 60m | +3 / - | J48S | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 103400 -6 1098 DM6MK 9A4ZM JN86 103515 -2 1637 DF3AS 9A4ZM JN86 (x2) 110445 -5 1762 OP4F 9A4ZM JN86 (x2) 110845 -9 1522 UR5KJA 9A4ZM JN86 (x2) 110930 -11 1526 9A4ZM UR5KJA -26 110945 -3 1522 UR5KJA 9A4ZM R-15 111000 -8 1526 9A4ZM UR5KJA RR73 111015 -7 1522 UR5KJA 9A4ZM 73 111400 -5 921 SP6PST 9A4ZM JN86 (x2) 114700 -1 752 DH2FW 9A4ZM JN86 (x2)
UTC dB Audio Message 022415 +6 581 J48S 9A4ZM JN86 (x3) 035515 -8 1737 IK7TOE 9A4ZM JN86 035545 +0 529 9A4ZM IU5SCG +16 035600 -5 1737 IU5SCG 9A4ZM R+17 035615 +0 529 9A4ZM IU5SCG RR73 035630 -7 1737 IU5SCG 9A4ZM 73 044700 -6 1753 EA8DQE 9A4ZM JN86 (x5) 045845 +5 1160 OH1CMV 9A4ZM JN86 (x2)
UTC dB Audio Message 025030 +6 2393 HI8R 9A4ZM R-09 (x2) 025215 +12 2234 G1CEC 9A4ZM JN86 031030 +6 1427 HI8R 9A4ZM JN86 (x4) 031945 -3 1431 9A4ZM HI8R -19 032000 +8 1427 HI8R 9A4ZM R-10 032015 -3 1430 9A4ZM HI8R RR73 032030 +6 1427 HI8R 9A4ZM 73 032245 -18 1551 9A4ZM ON1JP +06 034000 +19 2687 E73Y 9A4ZM JN86 034030 +10 2233 G1CEC 9A4ZM JN86 042545 -5 2237 9A4ZM G1CEC -12
UTC dB Audio Message 234030 -1 1922 9A4ZM F5RRS JN36 (x13) 004915 +0 992 DL1KDA 9A4ZM JN86 011330 -1 1382 UT2UB 9A4ZM JN86
UTC dB Audio Message 103845 -4 865 9A4ZM HB9HST -09 (x2) 115800 -11 1411 9A4ZM HB9FBG -04 (x3) 120100 -20 1484 9A4ZM IW1PRT RR73 120315 -17 1229 9A4ZM DL2UR RR73 130800 +8 1234 9A4ZM LZ1EV -14 (x2) 080645 -20 1855 9A4ZM DL9KAR +03 (x2) 081545 -1 2502 9A4ZM IK1MNJ RR73 115815 -11 853 9A4ZM F4FKT +14 (x2) 090630 -12 2166 9A4ZM <...> -12
UTC dB Audio Message 115300 -7 1429 9A4ZM CT7AUT IM67 115315 -6 1080 IT9KHY 9A4ZM R-19 115330 -10 1429 9A4ZM CT7AUT IM67 115345 -6 1080 IT9KHY 9A4ZM R-19 115400 -7 1429 9A4ZM CT7AUT IM67 115415 -5 1080 IT9KHY 9A4ZM R-19 120600 -13 718 9A4ZM IT9KHY RR73 170630 -10 1220 9M2DGA 9A4ZM JN86 170745 -12 1224 9A4ZM 9M2DGA -09 (x2) 185700 -8 1279 9A4ZM IU2UFF -12 (x5)
Decoder S/N history by band
Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.
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