TM21TFR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France

Receiver-side FT8 activity involving TM21TFR, decoded by SO8OO in southeastern Poland. 442 FT8 messages attributed to this token as transmitter, on 80m, 60m, 20m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-02 and 2026-08-08.

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 442 FT8 messages attributed to TM21TFR as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (49%), followed by 80 m (39%) and 20 m (8%). Several six-hour UTC windows tied for the largest share (63%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

442

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 171 60m · 218 20m · 37 10m · 16

First attributed message: 2026-08-02
Last attributed message: 2026-08-08 15:46 UTC

Observed FT8 message patterns

Attributed sample: 442 messages
Active dates: 5 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -19 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 137, moderate (-15 to -9 dB) 146, strong (≥ -8 dB) 159.

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 TM21TFR in decoded directed-looking exchanges:

ON6LR · Belgium W5XO · United States IU8VJU · Italy 8S7DL · Sweden

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.

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	TM21TFR S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-08 15:44	10m	-7 / -	<...>	- / -	3	✓ Closing fragment
08-08 15:38	10m	-7 / -	9A4ZM	- / +6	3	Partial capture
08-08 15:30	10m	-9 / -	<...>	-8 / -	3	✓ Closing fragment
08-08 14:15	20m	-3 / -	<...>	- / -	4	✓ Closing fragment
08-08 14:14	20m	-3 / -	RK6OG	- / -24	2	Partial capture
08-08 14:12	20m	-4 / -	<...>	- / -	2	✓ Closing fragment
08-08 14:07	20m	-6 / -	<...>	-9 / -	3	✓ Closing fragment
08-08 13:58	20m	-4 / -	OH7FQH	- / -22	2	Partial capture
08-08 13:58	20m	-3 / -	<...>	- / -	5	✓ Closing fragment
08-08 13:53	20m	-8 / -6	LZ2VQ	-24 / +9	2	Partial capture
08-08 05:59	60m	-16 / -	<...>	- / -	2	✓ Closing fragment
08-08 05:55	60m	-18 / -	F4CGN	-23 / +5	3	Partial capture
08-08 05:54	60m	-16 / +1	DK4RH	-16 / +9	3	Partial capture
08-08 05:48	60m	-16 / -	<...>	-10 / -	10	✓ Closing fragment
08-08 05:44	60m	-20 / -	<...>	-14 / -	2	✓ Closing fragment
08-08 05:44	60m	-20 / +8	F4AGZ	-16 / -	2	Partial capture
08-08 05:39	60m	-17 / -2	PA0EBG	-23 / -	2	Partial capture
08-08 05:36	60m	-20 / -	<...>	-17 / -	7	✓ Closing fragment
08-08 05:24	60m	-13 / -	<...>	-19 / -	9	✓ Closing fragment
08-08 04:54	80m	-16 / -	<...>	-4 / -	3	✓ Closing fragment
08-08 04:41	80m	-13 / -19	SP5GEO	+2 / -11	3	Partial capture
08-08 04:39	80m	-15 / -	<...>	-10 / -	10	✓ Closing fragment
08-08 04:38	80m	-17 / -	DC2SF	-15 / -	3	Partial capture
08-08 04:36	80m	-16 / -	F1NYF	- / -7	4	Partial capture
08-08 04:33	80m	-13 / -	<...>	-11 / -	4	✓ Closing fragment
08-08 04:28	80m	-12 / -4	DO2BBC	-14 / +7	4	Partial capture
08-08 04:25	80m	-12 / -	<...>	-19 / -	7	✓ Closing fragment
08-08 04:25	80m	- / -	F5PXF	-22 / -	2	Partial capture
08-08 04:25	80m	-12 / +1	PA3FRX	-19 / +4	5	Partial capture
08-08 04:16	80m	-15 / -	<...>	-7 / -	6	✓ Closing fragment
08-08 04:14	80m	-16 / -	F1NYF	- / -4	2	Partial capture
08-08 04:11	80m	-9 / -6	SP9UPH	+16 / -	4	Partial capture
08-08 04:07	80m	-9 / -	<...>	+6 / -	9	✓ Closing fragment
08-08 04:06	80m	-16 / -	ON6LR	- / -	3	✓ Closing fragment
08-07 05:39	60m	-18 / -	<...>	-11 / -	3	✓ Closing fragment
08-07 05:26	60m	- / -3	PA0EBG	-17 / -	4	Partial capture
08-07 05:22	60m	-19 / -	<...>	-17 / -	10	✓ Closing fragment
08-07 05:01	80m	- / -10	SP6FME	+10 / -	2	Partial capture
08-07 05:01	80m	-20 / -	<...>	+6 / -	2	✓ Closing fragment
08-07 04:57	80m	-21 / -	<...>	-22 / -	2	✓ Closing fragment
08-07 04:51	80m	-19 / -	<...>	- / -	3	✓ Closing fragment
08-07 04:47	80m	- / -	F6FTB	-16 / -	6	Partial capture
08-07 04:43	80m	-20 / -	EA7KUH	- / -12	2	Partial capture
08-07 04:39	80m	-15 / -	HB9MZI	- / -17	2	Partial capture
08-07 04:33	80m	- / -10	SP1TJ	-6 / -	5	Partial capture
08-07 04:33	80m	-12 / -	DO5OT	-15 / +1	2	Partial capture
08-07 04:29	80m	-16 / -	<...>	-8 / -	19	✓ Closing fragment
08-07 04:22	80m	-14 / -5	DO5SB	-12 / +6	3	Partial capture
08-07 04:17	80m	-10 / -16	DG0JJH	-17 / -17	5	Partial capture
08-07 04:16	80m	-11 / -	<...>	-13 / -	12	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
153200  -8 2639  <...> TM21TFR RR73 (x2)
153330  -9 2642  <HK3W> TM21TFR
153430  -6 2643  CQ TM21TFR (x3)
153830  -9 2654  9A4ZM TM21TFR +06 (x3)
154200  -8 2658  <...> TM21TFR RR73
154300  -6 2658  F4BJR TM21TFR -25
154400  -7 2658  YO3IHG TM21TFR -12
154430  -8 2658  <...> TM21TFR RR73 (x3)

20m

UTC    dB Audio  Message
141200  -2  376  <...> TM21TFR RR73
141230  -5  377  UT5MB TM21TFR -05
141300  -7  377  <...> TM21TFR RR73
141330  -6  376  CQ TM21TFR
141400  -4  376  RK6OG TM21TFR -24 (x2)
141530  -3  376  <...> TM21TFR 73
141600  -5  376  CQ TM21TFR
141630  -6  377  OH3CD TM21TFR +03
141700  -2  376  <...> TM21TFR RR73
141730  -5  376  9A4ZM TM21TFR +04
141800  -2  377  <...> TM21TFR RR73
141830  -3  377  CQ TM21TFR
141900  -4  377  IZ4JMA TM21TFR -05
141930  -4  377  <...> TM21TFR RR73

60m

UTC    dB Audio  Message
055400 -21 1772  CQ TM21TFR
055415 -15 1772  TM21TFR DK4RH JO31
055430 -16 1771  DK4RH TM21TFR +09
055445 -18 1772  TM21TFR DK4RH R+01
055530 -20 1771  CQ TM21TFR
055545 -23 1771  TM21TFR F4CGN JN26
055600 -18 1771  F4CGN TM21TFR +05 (x2)
055700 -21 1771  <...> TM21TFR RR73
055730 -20 1771  CQ TM21TFR (x3)
055900 -17 1771  F4CKR TM21TFR +11
055930 -16 1771  <...> TM21TFR RR73 (x2)

80m

UTC    dB Audio  Message
044900 -15 1755  CQ TM21TFR
044930 -17 1755  F5OYA TM21TFR -02
045100 -16 1754  <...> TM21TFR RR73
045130 -19 1754  CQ TM21TFR (x4)
045400 -19 1755  DL5CK TM21TFR -08
045445  -5 1328  TM21TFR <...> 73 (x2)
045730 -16 1755  <...> TM21TFR RR73
045800 -18 1754  CQ TM21TFR (x4)

40m

UTC    dB Audio  Message
135100 -17 2389  TM21TFR <...> 73
135400 -19 2388  TM21TFR UX7QV R-18
072545 -17  912  <TM21TFR> OK4RQ JN69
072545 -10  359  TM21TFR <...> 73
072615 -15  912  TM21TFR OK4RQ JN69 (x8)
075045 -20 1488  TM21TFR <...> RR73
075215 -21 1488  TM21TFR ON2KMJ -10
075345 -24 1488  TM21TFR <...> RR73

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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