SP1HN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO73

Receiver-side FT8 activity involving SP1HN, decoded by SO8OO in southeastern Poland. 268 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-27.

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 268 FT8 messages attributed to SP1HN as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (45%), followed by 40 m (34%) and 80 m (17%). Most decodes (56%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (71%); the estimated median was -3 dB.

Overview

268
Messages attributed
23
UTC dates decoded
45
Active 15-min windows
-3 dB
Estimated median S/N

Bands

160m · 12 80m · 45 40m · 90 20m · 120 10m · 1
First attributed message: 2026-06-07
Last attributed message: 2026-08-27 20:48 UTC

Observed FT8 message patterns

Attributed sample
268 messages
Active dates
23 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-16 to +10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 46, strong (≥ -8 dB) 190.

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 SP1HN 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 SP1HN

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
JO73 · 206 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
613 km (approx.)
Last such locator decoded
2026-08-27 20:48 UTC

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 UTCBandSP1HN S/NCounterpartCounterpart S/NMsgsCapture
08-27 20:45 80m -6 / - RI1FJL - / -10 7 Partial capture
08-27 20:38 80m -6 / - RI1FJL - / - 4 Partial capture
08-27 20:28 80m -8 / - RI1FJL - / - 9 Partial capture
08-26 21:27 40m +11 / - S57CT - / -4 2 ✓ Closing fragment
08-26 21:23 40m +14 / - OK2VCR - / +5 2 ✓ Closing fragment
08-26 21:22 40m +12 / -8 D2ACE -15 / -18 3 Partial capture
08-26 21:20 40m +15 / - LB9ZG - / -10 3 ✓ Closing fragment
08-26 21:18 40m +12 / -2 YT2FA -14 / -10 4 ✓ Full exchange observed
08-25 18:51 40m +5 / - RI1FJL - / - 23 Partial capture
08-20 21:22 20m - / -23 VE9JMC -14 / - 2 Partial capture
08-20 21:12 40m -16 / - <...> - / -18 2 Partial capture
08-20 21:08 40m -22 / - OJ0JR - / - 2 Partial capture
08-20 21:06 40m -14 / - <...> - / -17 2 Partial capture
08-20 16:42 20m +11 / - <...> - / - 5 Partial capture
08-20 15:26 20m +9 / - <...> - / -1 14 Partial capture
08-18 19:04 40m -9 / - DL8MAK/P - / - 3 Partial capture
08-18 19:02 40m -7 / - 3B9/SQ9UM - / - 5 Partial capture
08-17 23:07 40m -24 / - OJ0YL - / - 2 Partial capture
08-17 23:01 40m -18 / - OJ0YL - / - 2 Partial capture
08-17 22:56 40m -20 / - OA4ENG - / -18 2 ✓ Closing fragment
08-16 22:33 60m - / +6 SM0EJR -10 / - 2 Partial capture
08-15 22:35 80m -14 / -5 HF9T -1 / -9 8 ✓ Full exchange observed
08-15 22:34 80m -16 / -3 F1PBZ +5 / +8 6 ✓ Full exchange observed
08-15 22:34 80m -16 / -3 TF3VS +1 / - 5 ✓ Full exchange observed
08-15 22:21 40m -12 / - TF4M - / +8 2 Partial capture
08-15 22:19 40m -9 / - D2UY - / - 2 Partial capture
08-08 18:52 20m - / -10 CR7BRV -10 / - 2 ✓ Closing fragment
08-06 21:58 20m +2 / - D2ACE - / - 4 Partial capture
08-06 21:31 20m -6 / - BH8NNU - / -4 2 ✓ Closing fragment
07-25 20:01 80m -2 / -15 SV3CKF -12 / 0 5 ✓ Full exchange observed
07-25 20:00 80m +2 / - PH7KLM - / -7 2 ✓ Closing fragment
07-25 19:57 80m +2 / +4 SP5DFK 0 / +2 4 ✓ Full exchange observed
07-25 19:57 80m - / -6 F1PBZ +5 / - 2 Partial capture
07-25 19:57 80m +2 / -12 R5AV 0 / +10 4 ✓ Full exchange observed
07-25 19:51 160m -12 / +1 OM2WQ -2 / -12 8 ✓ Full exchange observed
07-25 19:50 160m -13 / -18 R2EA -10 / -19 5 Partial capture
07-25 19:48 160m -11 / - OM2WQ - / - 2 Partial capture
07-25 19:47 160m -10 / - OK1DXR - / - 2 Partial capture
07-24 11:19 20m 0 / - TA2AI - / - 2 ✓ Closing fragment
07-05 19:51 80m -11 / -17 DO2XU -3 / -16 4 Partial capture
07-05 19:47 80m - / -8 YT5DL +6 / - 3 ✓ Closing fragment
07-05 19:47 80m - / - SP5JET -12 / - 2 Partial capture
07-04 17:11 40m - / - DJ0MAB -9 / - 3 Partial capture
07-04 17:09 40m - / - IQ4JO +4 / - 2 ✓ Closing fragment
06-27 20:45 20m -5 / - A91LD - / -8 3 Partial capture
06-27 16:41 10m - / -3 F4FSY -14 / - 2 ✓ Closing fragment
06-27 16:09 20m -10 / - DL1R -5 / -1 7 Partial capture
06-26 07:07 20m -5 / - 3G0YM - / -3 17 Partial capture
06-26 07:02 20m -5 / - 3G0YM - / - 5 Partial capture
06-26 06:45 20m -2 / - 3G0YM - / - 20 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

80m 
UTC    dB Audio  Message
203415  -6 1250  RI1FJL SP1HN JO73 (x15)
40m 
UTC    dB Audio  Message
211900 +16 2607  YT2FA SP1HN R-10 (x2)
212030 +17 2606  LB9ZG SP1HN JO73 (x3)
212200 +12 2607  D2ACE SP1HN JO73
212215 -15 2282  SP1HN D2ACE -08
212230 +11 2607  D2ACE SP1HN R-18
212300 +10 2607  OK2VCR SP1HN +05 (x2)
212515  +9 2607  IU8PYW SP1HN JO73
212615 +13 2607  CQ SP1HN JO73 (x2)
212715 +13 2607  S57CT SP1HN -04 (x2)
20m 
UTC    dB Audio  Message
153245 +11  571  <...> SP1HN JO73 (x11)
174600  -3  369  SP1HN JH3KCW +08
212230 -13 1313  SP1HN VE9JMC -23 (x2)
161545 +20 1933  8A397KBM SP1HN JO73
60m 
UTC    dB Audio  Message
223315 -10 1590  SP1HN SM0EJR +06 (x2)
160m 
UTC    dB Audio  Message
195030 -10 2510  R2EA SP1HN JO73
195130 -15 2097  CQ SP1HN JO73
195145  -1 1018  SP1HN OM2WQ JN88
195200 -12 2097  CQ SP1HN JO73
195215 -10 2481  SP1HN R2EA -18
195215  -3 1018  SP1HN OM2WQ JN88
195230 -12 2097  OM2WQ SP1HN -12
195245  +0 1018  SP1HN OM2WQ R+01
195300 -13 2097  OM2WQ SP1HN RR73
195315  -1 1018  SP1HN OM2WQ 73
195330 -15 2097  R2EA SP1HN R-19
195345  -5 1018  SP1HN OM2WQ JN88
195400 -16 2097  R2EA SP1HN R-19
195415  -1 1018  SP1HN OM2WQ R-05
195430 -12 2097  R2EA SP1HN R-19
10m 
UTC    dB Audio  Message
192300 -13  421  SP1HN T77RN +13 (x2)
164115 -17 1702  SP1HN F4FSY -03 (x2)
164645 -10  702  SP1HN SV2CLJ KN10
085930  +1  494  SP1HN OH3OJ -18

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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