GM0MAK — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving GM0MAK, decoded by SO8OO in southeastern Poland. 100 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-09-14.

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 100 FT8 messages attributed to GM0MAK as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (47%), followed by 80 m (31%) and 40 m (22%). Most decodes (75%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -5 dB.

Overview

100

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 31 40m · 22 20m · 47

First attributed message: 2026-06-15
Last attributed message: 2026-09-14 22:10 UTC

Observed FT8 message patterns

Attributed sample: 100 messages
Active dates: 12 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -12 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 72.

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 GM0MAK in decoded directed-looking exchanges:

AC9XW · United States G6XJU · England JA7BXS · Japan KE2BLG · United States KJ5PTH · United States WB8JUI · United States TA7MMI · Asiatic Turkey TN8GD · Republic of the Congo 9A4ZM · Croatia D2UY · Angola F6BHK · France RA3TOS · European Russia

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 GM0MAK

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 · 53 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,821 km (approx.)
Last such locator decoded: 2026-09-14 22:10 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	GM0MAK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-14 22:09	40m	-2 / -	VU3IHK	- / -	2	Partial capture
09-14 22:05	40m	-13 / -	JY5IB	- / -	2	Partial capture
09-14 22:03	40m	-7 / -	TN8GD	- / -13	3	✓ Closing fragment
09-14 19:54	40m	- / -3	TA7MMI	-8 / -	2	✓ Closing fragment
09-04 08:18	40m	- / -	DL9ATW	+9 / -	4	Partial capture
09-04 08:16	40m	- / -	PD1AC	-18 / -	3	Partial capture
09-03 20:22	40m	+1 / -	TT1GD	- / -	4	Partial capture
09-03 20:20	40m	- / -	PE1NPS	-1 / -	4	Partial capture
08-28 14:51	40m	- / -6	DK7ZT	-14 / -	3	Partial capture
08-27 21:10	40m	-2 / -	VU3IHK	- / -	5	Partial capture
08-22 23:00	80m	-1 / +2	F6BHK	-7 / -2	4	✓ Full exchange observed
07-24 10:06	20m	- / -	PD1ADA	-21 / -	4	Partial capture
07-24 10:06	20m	- / -5	RZ3EM	-15 / -	4	Partial capture
07-23 22:18	80m	-2 / -	VK6XT	- / -	2	Partial capture
07-23 22:16	80m	-2 / -	VU2NKS	- / -	4	Partial capture
07-23 22:14	80m	+1 / -	9A4ZM	+16 / +5	4	✓ Closing observed
07-23 22:13	80m	0 / -19	RA3TOS	-17 / -13	4	✓ Full exchange observed
07-23 22:10	80m	+2 / -	D2UY	- / -1	6	✓ Closing fragment
07-21 15:15	20m	- / -	F4HSB	-22 / -	2	Partial capture
07-21 15:15	20m	-10 / -	SM3JBO	- / +1	2	Partial capture
07-21 15:12	20m	-10 / -	KE6HVE	- / -9	2	Partial capture
07-21 10:39	20m	- / +1	9A4ZM	+11 / -	3	Partial capture
07-21 09:46	20m	-2 / -	YC1GDF	- / -	2	Partial capture
07-20 22:04	80m	-6 / -	TN8GD	- / -	2	Partial capture
07-20 22:03	20m	- / -2	YO4NF	-1 / -	2	Partial capture
07-20 22:01	20m	-7 / -	AC9XW	- / -13	4	✓ Closing fragment
07-20 21:55	20m	-10 / -	WA2HMM	- / -4	2	Partial capture
07-20 21:53	20m	-8 / -	KE2BLG	- / -5	4	✓ Closing fragment
07-20 21:52	20m	- / -	IW2DNI	-6 / -	6	Partial capture
07-20 21:51	20m	-8 / -	WB8JUI	- / -	2	✓ Closing fragment
07-20 21:49	20m	-9 / -	KJ5PTH	- / -19	4	✓ Closing fragment
07-20 19:41	20m	- / -	IU5HIU	-10 / -	3	Partial capture
07-20 19:35	20m	- / -	DJ0MAB	-11 / -	3	Partial capture
07-20 19:35	20m	- / -	IU5HIU	-7 / -	3	Partial capture
07-20 19:35	20m	- / -19	JA7BXS	-9 / -	3	✓ Closing fragment
06-30 18:40	20m	-8 / -	W6C	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
081830  +6  616  GM0MAK DL9ATW JO61 (x4)
195415  -7 2030  GM0MAK TA7MMI -03 (x2)
220115 -14 1644  K3GIL GM0MAK IO87
220345  -3  594  TN8GD GM0MAK IO87 (x3)
220545  -8 1398  JY5IB GM0MAK IO87 (x2)
220945  -2  574  VU3IHK GM0MAK IO87 (x2)
140315  -3 1394  GM0MAK HF100PKP -09

80m

UTC    dB Audio  Message
221430 +17 2527  GM0MAK 9A4ZM JN86
221445  -3 2530  9A4ZM GM0MAK +05
221530 +16 2526  GM0MAK 9A4ZM 73
221545  +5 2530  9A4ZM GM0MAK 73
221630  -1 2529  VU2NKS GM0MAK IO87 (x4)
221830  -4 2070  VK6XT GM0MAK IO87 (x2)
230015 -10  854  GM0MAK F6BHK JN24
230045  -5  854  GM0MAK DA6CGN JO31
230100  -1  854  F6BHK GM0MAK -02
230115  -4  855  GM0MAK F6BHK R+02 (x2)

20m

UTC    dB Audio  Message
151415 -19 2224  GM0MAK SM5MRW R+04
151530  -9 1178  SM3JBO GM0MAK +01
151545 -22 1734  GM0MAK F4HSB JN37 (x2)
151630 -11 1178  SM3JBO GM0MAK RRR
100030 -22 1505  NM3B GM0MAK IO87
100345 -17 2036  GM0MAK PD1ADA JO21
100600 -16 2375  GM0MAK RZ3EM -05
100615 -21 2035  GM0MAK PD1ADA JO21
100630 -17 2376  GM0MAK RZ3EM -05
100645 -24 2035  GM0MAK PD1ADA JO21
100700 -12 2377  GM0MAK RZ3EM -05
100715 -21 2036  GM0MAK PD1ADA JO21
100730 -16 2377  GM0MAK RZ3EM -05
100745 -19 2036  GM0MAK PD1ADA JO21

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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