GM0MKM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Scotland Most frequent locator attributed to this token: IO75

Receiver-side FT8 activity involving GM0MKM, decoded by SO8OO in southeastern Poland. 71 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-22 and 2026-09-10.

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 71 FT8 messages attributed to GM0MKM as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (94%), followed by 80 m (6%). Most decodes (100%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was -6 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 4 40m · 67

First attributed message: 2026-06-22
Last attributed message: 2026-09-10 17:45 UTC

Observed FT8 message patterns

Attributed sample: 71 messages
Active dates: 4 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -10 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 59.

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 GM0MKM in decoded directed-looking exchanges:

DL6EL · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany EC3A · Spain F1PBZ · France F5LMJ · France G0AKH · England G6MTI · England IQ4JO · Italy M0SSK · England M7JTK · England OZ1SLS · Denmark PD2MAC · Netherlands

Most frequent locator attributed to GM0MKM

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: IO75 · 30 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,894 km (approx.)
Last such locator decoded: 2026-09-10 17:45 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	GM0MKM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 17:44	40m	0 / -	F5LMJ	- / -15	2	✓ Closing fragment
09-10 17:41	40m	-4 / -	F1PBZ	-12 / -9	3	✓ Closing observed
09-10 17:38	40m	-6 / -	G6MTI	-15 / -15	4	✓ Closing observed
09-10 17:37	40m	-8 / -20	UB6OCP	-3 / -17	9	✓ Full exchange observed
09-10 17:35	40m	-10 / -	PD2MAC	-17 / -5	3	✓ Closing observed
09-10 17:33	40m	-4 / -3	9A/DA1HM/P	0 / -7	2	Partial capture
09-10 17:30	40m	-8 / -13	R7ZS	+5 / -10	5	✓ Full exchange observed
09-10 17:30	40m	-8 / -	UT1EF	- / -11	2	✓ Closing fragment
09-10 17:29	40m	-4 / -	M7JTK	- / -6	2	✓ Closing fragment
09-10 17:27	40m	-5 / +3	DL6EL	-3 / -12	5	✓ Full exchange observed
09-10 17:25	40m	-10 / -	US3EW	-11 / -10	3	✓ Closing observed
09-10 17:24	40m	-5 / -	M0SSK	-14 / -7	4	✓ Closing observed
09-10 17:22	40m	-6 / -	G0AKH	- / -3	2	✓ Closing fragment
09-10 17:18	40m	-4 / -26	OZ1SLS	-9 / -20	8	✓ Full exchange observed
09-10 17:18	40m	-6 / -	DL9KM	- / -5	2	✓ Closing fragment
06-26 20:45	40m	-3 / -	<...>	- / -	3	Partial capture
06-26 19:49	40m	-6 / -	<...>	- / -7	2	Partial capture
06-23 22:35	40m	-6 / -3	IQ4JO	+7 / -4	4	✓ Full exchange observed
06-23 22:33	40m	- / -	SP9MOA	-16 / -	2	✓ Closing fragment
06-23 22:31	40m	-6 / -	EC3A	- / -5	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
173945 -15  940  GM0MKM G6MTI 73
174000  -4 3027  CQ GM0MKM IO75
174015  +6 1823  GM0MKM UB6OCP R-20
174030  +1 3027  CQ GM0MKM IO75
174045  +7 1917  GM0MKM UB6OCP R-20
174100  -4 3027  F1PBZ GM0MKM R-09
174115 -12 2241  GM0MKM F1PBZ RR73
174130  -5 3027  F1PBZ GM0MKM 73
174200  -5 3027  UB6OCP GM0MKM RR73
174300  -4 3027  CQ GM0MKM IO75 (x2)
174400  -3 3027  F5LMJ GM0MKM -15 (x2)
174530  +2 3027  CQ GM0MKM IO75
174545  -9 3027  GM0MKM R5AV +00

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