GB1HTC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: England Most frequent locator attributed to this token: IO73

Receiver-side FT8 activity involving GB1HTC, decoded by SO8OO in southeastern Poland. 211 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-12.

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 211 FT8 messages attributed to GB1HTC as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -8.6 dB; no usual signal pattern is inferred.

Overview

211
Messages attributed
1
UTC dates decoded
19
Active 15-min windows
-8.6 dB
Estimated median S/N

Bands

40m · 211
First attributed message: 2026-09-12
Last attributed message: 2026-09-12 21:05 UTC

Observed FT8 message patterns

Attributed sample
211 messages
Active dates
1 UTC dates
Estimated median S/N
-8.6 dB
Estimated 10th-90th percentile
-14 to -4 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 94, strong (≥ -8 dB) 105.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with GB1HTC 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 GB1HTC

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
IO73 · 63 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,876 km (approx.)
Last such locator decoded
2026-09-12 21:05 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 UTCBandGB1HTC S/NCounterpartCounterpart S/NMsgsCapture
09-12 21:05 40m - / - US2YW -19 / - 3 Partial capture
09-12 20:59 40m -15 / -11 EB3JT -8 / - 3 ✓ Closing observed
09-12 20:56 40m - / - UX5UO -20 / - 2 ✓ Closing fragment
09-12 20:53 40m -12 / -6 EA5OM -1 / 0 7 ✓ Full exchange observed
09-12 20:50 40m - / - EA5OM -1 / - 2 Partial capture
09-12 20:48 40m -11 / -16 4O4DB -6 / -22 11 ✓ Full exchange observed
09-12 20:46 40m - / -10 PE2K -5 / - 12 Partial capture
09-12 20:45 40m -9 / +1 PC2J -6 / -2 4 ✓ Full exchange observed
09-12 20:45 40m - / - RA6OY +1 / - 5 Partial capture
09-12 20:40 40m -6 / - SA6LDQ - / 0 3 ✓ Closing fragment
09-12 20:33 40m -8 / -16 SV1DZB -9 / -8 12 ✓ Full exchange observed
09-12 20:32 40m - / -1 DH1KU -13 / - 4 Partial capture
09-12 20:31 40m -5 / -2 OH3GKA -11 / -20 6 Partial capture
09-12 20:29 40m -9 / +4 SV1DZB -19 / +1 5 Partial capture
09-12 20:27 40m -10 / -1 DH1KU -17 / - 3 Partial capture
09-12 20:24 40m -10 / -4 PC2J +8 / +2 9 Partial capture
09-12 20:17 40m - / - RC5F +6 / - 5 Partial capture
09-12 20:14 40m -7 / - G6NLZ -5 / -15 13 Partial capture
09-12 20:10 40m -8 / -8 EA1KCN -9 / -11 11 ✓ Full exchange observed
09-12 20:09 40m - / -4 DJ3WF -4 / - 4 Partial capture
09-12 20:06 40m - / - LZ2BC -9 / - 3 Partial capture
09-12 20:06 40m -4 / -13 YO4NF +4 / -19 11 ✓ Full exchange observed
09-12 20:03 40m -4 / -4 DJ3WF -6 / -16 6 Partial capture
09-12 20:01 40m - / -15 YO4NF +7 / - 5 Partial capture
09-12 19:55 40m -8 / -10 R1BEO -2 / -20 2 Partial capture
09-12 19:52 40m -5 / - F4IFO - / +7 2 ✓ Closing fragment
09-12 19:51 40m -7 / - PD0SBH - / -9 3 ✓ Closing fragment
09-12 19:50 40m - / - OH1ZE -11 / - 5 Partial capture
09-12 19:48 40m -3 / +6 DL5KIM -2 / -16 4 ✓ Full exchange observed
09-12 19:44 40m -11 / - DL1YFS -8 / - 7 ✓ Closing observed
09-12 19:41 40m -6 / - PA3ATR -1 / - 4 ✓ Closing observed
09-12 19:38 40m -4 / - EA4RKC - / -3 2 Partial capture
09-12 19:38 40m - / - SQ2BXI -5 / - 5 Partial capture
09-12 19:35 40m -8 / - M8UKQ -15 / -21 4 Partial capture
09-12 19:35 40m - / - DL4CL 0 / - 3 Partial capture
09-12 19:34 40m - / -10 IU5VLR -9 / - 3 Partial capture
09-12 19:34 40m - / -10 YO4NF +10 / - 2 Partial capture
09-12 19:33 40m -7 / -15 DG2EBG -6 / -11 2 Partial capture
09-12 19:32 40m - / +9 DL5RDP +13 / - 4 Partial capture
09-12 19:31 40m - / - DL4CL 0 / - 2 Partial capture
09-12 19:27 40m -11 / -11 YO4NF +6 / -9 8 Partial capture
09-12 19:20 40m -10 / - SA0LSD -15 / -8 7 Partial capture
09-12 19:15 40m -14 / - EA7UW - / +1 7 Partial capture
09-12 19:09 40m -18 / -9 DL5YDA -14 / +3 2 Partial capture
09-12 19:08 40m -14 / -13 RC1C 0 / - 10 ✓ Full exchange observed
09-12 19:07 40m - / - RW1AI -1 / - 3 Partial capture
09-12 19:07 40m - / -12 YO4NF +1 / - 3 Partial capture
09-12 19:05 40m -11 / - EA5W -19 / +9 5 ✓ Closing observed
09-12 19:04 40m - / -8 PE1EXQ +12 / - 3 ✓ Closing fragment
09-12 18:56 40m -14 / -20 RV3X +3 / -5 5 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
205630 -23 1269  GB1HTC UX5UO KO50 (x2)
205815 -18  657  CQ GB1HTC IO73
205930  -5  658  GB1HTC EB3JT R-11
205945 -15  657  EB3JT GB1HTC RR73
210000 -10  658  GB1HTC EB3JT 73
210315 -11  657  CQ GB1HTC IO73 (x3)
210430  -5 2375  GB1HTC F4NFM IN97
210445  -9  657  CQ GB1HTC IO73 (x2)
210530 -19  658  GB1HTC US2YW KN28 (x3)

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