G4RRM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: England Most frequent locator attributed to this token: IO83

Receiver-side FT8 activity involving G4RRM, decoded by SO8OO in southeastern Poland. 168 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-08 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 168 FT8 messages attributed to G4RRM as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (49%), followed by 80 m (33%) and 20 m (17%). Most decodes (89%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -6 dB.

Overview

168

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 56 40m · 83 20m · 29

First attributed message: 2026-06-08
Last attributed message: 2026-09-19 18:55 UTC

Observed FT8 message patterns

Attributed sample: 168 messages
Active dates: 26 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -13 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 40, strong (≥ -8 dB) 118.

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 G4RRM in decoded directed-looking exchanges:

IZ0ZIP · Italy 4O4DB · Montenegro DG1ASD · Fed. Rep. of Germany DL6RS · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany G6LEE · England HK3X · Colombia IN3LHF · Italy M0KDZ · England R1BQC · European Russia RN6MA · European Russia SP1EG · Poland

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 G4RRM

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: IO83 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,744 km (approx.)
Last such locator decoded: 2026-09-15 06:52 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	G4RRM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 07:43	40m	- / +1	OE8PIT	-1 / -	5	Partial capture
09-15 06:50	40m	-14 / -	ZL3AAU	- / -19	3	Partial capture
09-05 07:58	40m	- / -11	UT4PA	0 / -	2	✓ Closing fragment
09-05 07:54	40m	- / -6	SP5EXA	+19 / -	3	✓ Closing fragment
09-05 07:54	40m	- / -	UT4PA	0 / -	2	Partial capture
08-31 23:52	40m	+2 / -	RI1FJL	- / -20	2	Partial capture
08-30 21:28	40m	-5 / -	R1BQC	- / -17	2	✓ Closing fragment
08-29 23:05	40m	-5 / -	8Q7PR	- / -17	2	Partial capture
08-15 17:22	40m	-8 / -	IN3LHF	- / -15	2	✓ Closing fragment
08-09 20:46	80m	-9 / -	DO5PY	- / -11	3	✓ Closing fragment
08-09 20:44	80m	-6 / -10	DO1OAS	+1 / -9	4	✓ Full exchange observed
08-07 09:49	10m	- / -14	LZ1JZ	-16 / -	2	Partial capture
08-05 22:14	80m	- / -2	DO9JTR	-8 / -	2	Partial capture
08-05 22:12	80m	-10 / -12	RO2X	+9 / -8	5	✓ Full exchange observed
08-05 21:51	40m	- / -2	DL9KM	-14 / -	6	✓ Closing fragment
08-05 17:32	20m	-16 / -	R3PMW	- / -23	2	Partial capture
07-29 22:32	40m	- / -3	F1PBZ	-9 / -	2	Partial capture
07-29 21:45	20m	-21 / -	YV5AEZ	- / -20	2	Partial capture
07-29 20:49	10m	- / -12	IZ0ZIP	-2 / -	2	✓ Closing fragment
07-16 20:41	40m	- / -	DG4LXM	-4 / -	2	Partial capture
07-16 20:20	80m	-6 / -	<...>	- / -5	2	Partial capture
07-16 20:17	80m	-10 / -21	YO4GIY	-4 / -	5	✓ Closing observed
07-14 21:10	80m	+3 / +2	GM1TGY	-6 / -	3	✓ Closing observed
07-14 21:08	80m	0 / -1	RC6OD	+9 / -9	4	✓ Full exchange observed
07-14 20:21	40m	-9 / -	G6LEE	-8 / -4	2	✓ Closing observed
07-04 00:11	80m	+4 / -	TN8GD	- / -24	3	Partial capture
07-04 00:02	80m	-4 / +2	TM2WWA	-3 / -10	5	✓ Full exchange observed
07-03 23:55	40m	-13 / -	HK3X	- / -15	3	✓ Closing fragment
07-03 22:23	80m	-10 / -	Z31B	- / -19	2	Partial capture
06-28 20:04	40m	- / -1	G4DBW	-17 / -	2	Partial capture
06-28 19:56	40m	- / -14	SP1EG	-12 / -	2	✓ Closing fragment
06-28 19:54	40m	- / -13	4O4DB	-11 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
194600  +5 2380  G4RRM YO1BRANCUSI R-21
204345  -1 2726  CQ G4RRM IO83 (x2)
204430  -1 2726  G4RRM DO1OAS -10
204445  -4 2726  DO1OAS G4RRM R-09
204500  +3 2726  G4RRM DO1OAS RR73
204515  -7 2726  DO1OAS G4RRM 73
204545  -8 2726  CQ G4RRM IO83
204615  -9 2726  DO5PY G4RRM -11 (x3)
203215 -12 2095  UX1AA G4RRM -13
203330 -13 2095  EA5KT G4RRM RR73
221515  -7 2806  RI1FJZ G4RRM -14
185515 -17 2831  V51WH G4RRM -15

40m

UTC    dB Audio  Message
075500 +18 2679  G4RRM SP5EXA R-06 (x2)
075600  +0 2890  G4RRM UT4PA KO20 (x3)
092930  +3 2430  G4RRM OE6OCG JN77
065030 -16 2372  ZL3AAU G4RRM -19 (x3)
065230 -16 2372  CQ G4RRM IO83
074300  -1  342  G4RRM OE8PIT JN66 (x5)

20m

UTC    dB Audio  Message
214545 -21 2181  YV5AEZ G4RRM -20 (x2)
173200 -17 2501  R3PMW G4RRM -23 (x2)
171700 -16 2551  BV2NF G4RRM -16
172230  -9 2623  BI6AN G4RRM -15
135330 -17 1370  G4RRM DD7EE JO41
085815  -2 2800  CQ G4RRM IO83
085915  -1 2800  DL1R G4RRM -11

10m

UTC    dB Audio  Message
204630  -7 2131  G4RRM IZ0ZIP -14 (x3)
094900 -21 2196  G4RRM LZ1JZ R-14 (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