GM5G — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Scotland Most frequent locator attributed to this token: IO87

Receiver-side FT8 activity involving GM5G, decoded by SO8OO in southeastern Poland. 56 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-29 and 2026-08-30.

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 56 FT8 messages attributed to GM5G as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (54%), followed by 80 m (45%) and 40 m (2%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

160m · 30 80m · 25 40m · 1

First attributed message: 2026-08-29
Last attributed message: 2026-08-30 06:35 UTC

Observed FT8 message patterns

Attributed sample: 56 messages
Active dates: 2 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -16 to -6 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 37, strong (≥ -8 dB) 12.

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 GM5G in decoded directed-looking exchanges:

DK7QJ · Fed. Rep. of Germany DL8LE · Fed. Rep. of Germany DO3VE · Fed. Rep. of Germany F5RRS · France G4DDL · England G8OO · England OH5CY · Finland SP6IHE · Poland UX1UA · Ukraine CE2SV · Chile LZ2VQ · Bulgaria M9KER · England

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 GM5G

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: IO87 · 22 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,821 km (approx.)
Last such locator decoded: 2026-08-30 06:35 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	GM5G S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 06:35	40m	- / -	PD1AC	-13 / -	4	Partial capture
08-30 06:35	40m	- / -	DF8RU	+14 / -	4	Partial capture
08-30 02:57	80m	-12 / -8	R1BED	-12 / -	4	✓ Closing observed
08-30 02:55	80m	-9 / -	CE2SV	-22 / -	4	✓ Closing observed
08-30 02:53	80m	-13 / -	WK2M	- / -	3	Partial capture
08-30 02:52	80m	- / -	SP1TP	+2 / -	2	Partial capture
08-30 02:52	80m	- / -	DO5PY	-1 / -	3	Partial capture
08-30 02:52	80m	- / -	OH3EVO	-10 / -	2	Partial capture
08-30 01:45	80m	- / -	YL2EA	+5 / -	2	Partial capture
08-30 01:30	80m	-10 / -3	F5BRF	-20 / -	3	Partial capture
08-30 01:28	80m	-10 / -	W4KFC	- / -	5	✓ Closing fragment
08-30 01:25	80m	-8 / -	LZ2VQ	0 / -	4	✓ Closing observed
08-30 01:25	80m	-9 / -	RZ6ALZ	-4 / -	4	Partial capture
08-30 01:24	80m	-6 / -	UA4FKT	+10 / -	4	✓ Closing observed
08-29 22:17	160m	-10 / -	DK7QJ	-13 / -	4	✓ Closing observed
08-29 22:17	160m	-11 / -	OH5CY	- / -	2	✓ Closing fragment
08-29 22:15	160m	-10 / -	F5RRS	-8 / -	4	✓ Closing observed
08-29 22:13	160m	-14 / -	DO3VE	- / -	2	✓ Closing fragment
08-29 22:12	160m	-10 / -	UX1UA	+6 / -	4	✓ Closing observed
08-29 22:10	160m	-11 / -	G4DDL	- / -	2	✓ Closing fragment
08-29 22:10	160m	-12 / -	G8OO	-24 / -	5	✓ Closing observed
08-29 20:46	160m	-16 / -	DL8LE	+8 / -	4	✓ Closing observed
08-29 20:45	160m	-15 / -	SP6IHE	+7 / -	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
063500  -4  624  CQ WW GM5G IO87
063515 +10  624  GM5G DF8RU JN68
063545 -15 2152  GM5G PD1AC JO22
063545 +15  624  GM5G DF8RU JN68
063615 -10 2152  GM5G PD1AC JO22
063615 +15  624  GM5G DF8RU JN68
063645 -15 2152  GM5G PD1AC JO22
063645 +14  624  GM5G DF8RU JN68
063715 -12 2151  GM5G PD1AC JO22

160m

UTC    dB Audio  Message
221600  -9  945  F5RRS GM5G 73
221630 -10  945  CQ WW GM5G IO87
221700 -12  945  OH5CY GM5G R IO87 (x2)
221745 -13  945  GM5G DK7QJ JO41
221800 -11  945  DK7QJ GM5G R IO87
221815 -13  946  GM5G DK7QJ RR73
221830  -9  945  DK7QJ GM5G 73
221900 -10  945  CQ WW GM5G IO87 (x2)
222000  -6  945  DK9JC GM5G IO87
032830 -19 1604  WB8SCG GM5G IO87
032900 -16 1604  CQ WW GM5G IO87 (x2)
033000 -17 1604  ZW5B GM5G IO87

80m

UTC    dB Audio  Message
025345 -12 1670  WK2M GM5G R IO87 (x3)
025500 -24 2509  GM5G CE2SV FF47 (x2)
025615  -5 1668  GM5G SP1TP RR73
025630 -22 2509  GM5G CE2SV RR73
025645  -9 1670  CE2SV GM5G 73
025715 -12 1670  R1BED GM5G R IO87
025730 -12 2433  GM5G R1BED -08
025745 -12 1670  R1BED GM5G 73
025800 -13 2433  GM5G R1BED -08
025815  -7 1670  PY4QQ GM5G R IO87
025915 -14 1670  CQ WW GM5G IO87
030000  -5  651  GM5G OH3EVO KP11

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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