HB9TPW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN37

Receiver-side FT8 activity involving HB9TPW, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-07-12 and 2026-09-19.

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 68 FT8 messages attributed to HB9TPW as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (50%), followed by 20 m (29%) and 10 m (15%). Most decodes (94%) fell within the six-hour window 05:00-11:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

60m · 34 40m · 4 20m · 20 10m · 10

First attributed message: 2026-07-12
Last attributed message: 2026-09-19 05:44 UTC

Observed FT8 message patterns

Attributed sample: 68 messages
Active dates: 8 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -22 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 13.

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 HB9TPW in decoded directed-looking exchanges:

EI2KVB · Ireland DL6ZOG · Fed. Rep. of Germany DM3YBN · Fed. Rep. of Germany EC3A · Spain IZ5RKH · Italy LZ3BS · Bulgaria F6FHZ · France G0AZH · England OT4A · Belgium S52UF · Slovenia SP9UPH · Poland IZ3GOO · Italy

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 HB9TPW

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: JN37 · 42 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,116 km (approx.)
Last such locator decoded: 2026-09-19 05:43 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 UTC	Band	HB9TPW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 05:43	60m	-20 / -10	SP9UPH	+12 / -9	5	✓ Full exchange observed
09-19 05:40	60m	-18 / -	F6FHZ	- / -18	2	✓ Closing fragment
09-19 05:27	60m	-14 / -8	S52UF	-8 / -7	5	✓ Full exchange observed
09-19 05:25	60m	-20 / -	G0AZH	- / -20	2	✓ Closing fragment
09-18 06:28	60m	-13 / +9	IK2TPX	-10 / +6	3	Partial capture
09-18 06:27	60m	- / -	OK1BN	+9 / -	7	Partial capture
09-08 04:59	80m	- / -	DO8JB	-5 / -	11	Partial capture
09-08 04:54	80m	- / -4	IZ3GOO	+10 / -	4	✓ Closing fragment
09-08 04:53	80m	- / -20	DO1OAS	-6 / -	3	Partial capture
09-03 05:48	60m	-11 / -	MM0HVU	- / -	2	Partial capture
09-03 05:24	60m	-11 / +1	OT4A	+3 / -	5	✓ Full exchange observed
08-17 09:22	20m	-2 / -	M3TLJ	- / -	3	Partial capture
08-17 09:20	20m	-10 / -	HA3HZ	- / -	2	Partial capture
08-17 09:15	20m	-3 / -10	DM3YBN	-18 / +4	4	✓ Full exchange observed
08-17 09:10	20m	-6 / -1	DL6ZOG	-4 / -4	4	✓ Full exchange observed
08-15 16:54	20m	- / +10	F5NNN	-20 / -	2	Partial capture
08-15 16:37	20m	- / -12	EC3A	-12 / -	2	✓ Closing fragment
08-03 05:29	40m	- / -8	LZ3BS	-2 / -	4	✓ Closing fragment
08-03 05:29	40m	- / -2	OZ6P	-14 / -	2	Partial capture
07-25 15:20	20m	-22 / +3	IZ5RKH	-11 / +6	4	✓ Full exchange observed
07-19 09:07	10m	-23 / -	EI2KVB	- / -6	2	✓ Closing fragment
07-19 09:06	10m	-21 / -	YO8DHD	- / -23	2	Partial capture
07-19 09:01	10m	-14 / -	EA5AIM	- / -16	3	Partial capture
07-17 18:06	10m	- / -	SV2CLJ	-10 / -	2	Partial capture
07-12 06:41	40m	- / -	HF5A	-9 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
053630 -19 1336  CQ HB9TPW JN37 (x7)
054000 -18 1336  F6FHZ HB9TPW -18 (x2)
054300 -19 1336  CQ HB9TPW JN37
054315 +10  959  HB9TPW SP9UPH JO90
054330 -22 1336  SP9UPH HB9TPW -09
054345 +13  959  HB9TPW SP9UPH R-10
054400 -17 1336  SP9UPH HB9TPW RR73
054415 +12  959  HB9TPW SP9UPH 73

80m

UTC    dB Audio  Message
045445  +3 1050  HB9TPW DO1OAS -20
045645 +16 1297  HB9TPW IZ3GOO R-04 (x3)
045945  -4 1056  HB9TPW DO8JB JO32 (x11)

20m

UTC    dB Audio  Message
091045  -8 1233  DL6ZOG HB9TPW RR73
091315  +2 1233  CQ HB9TPW JN37 (x4)
091500 -17 1233  HB9TPW DM3YBN JO60
091515  +1 1233  DM3YBN HB9TPW +04
091530 -18 1233  HB9TPW DM3YBN R-10
091545  -7 1233  DM3YBN HB9TPW RR73
091945 -10 1233  CQ HB9TPW JN37
092015 -16 1233  HA3HZ HB9TPW JN37 (x2)
092215  -3 1233  M3TLJ HB9TPW JN37 (x3)

40m

UTC    dB Audio  Message
050715 -13 1204  CQ HB9TPW JN37
050745 -18 1204  MW9LQA HB9TPW JN37
050915 -21 1204  EA4IPN HB9TPW JN37
052615 -18 1205  DG1KFR HB9TPW JN37
064100  -8 2653  HB9TPW HF5A JO92 (x2)
052915 -14 1363  HB9TPW OZ6P JO55
052915  -4 2642  HB9TPW LZ3BS KN22
052945 -13 1363  HB9TPW OZ6P R-02
053045  -1 2659  HB9TPW LZ3BS R-08 (x3)

10m

UTC    dB Audio  Message
180600  -7  739  HB9TPW SV2CLJ KN10 (x2)
085930 -15 1398  CQ HB9TPW JN37
090100 -17 1397  EA5AIM HB9TPW -16 (x3)
090230 -16 1398  CQ HB9TPW JN37
090245 -13 1398  HB9TPW R7OV KN87
090300 -19 1397  UR4UT HB9TPW R-08
090600 -20 1397  YO8DHD HB9TPW R-23 (x2)
090700 -24 1397  EI2KVB HB9TPW -06 (x2)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee