GI4DOH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Northern Ireland Most frequent locator attributed to this token: IO74

Receiver-side FT8 activity involving GI4DOH, decoded by SO8OO in southeastern Poland. 923 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 41 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-03.

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 923 FT8 messages attributed to GI4DOH as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (58%), followed by 40 m (35%) and 160 m (6%). Most decodes (99%) 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 (69%); the estimated median was -4 dB.

Overview

923

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 58 80m · 535 40m · 319 20m · 10 10m · 1

First attributed message: 2026-06-06
Last attributed message: 2026-09-03 23:52 UTC

Observed FT8 message patterns

Attributed sample: 923 messages
Active dates: 41 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -14 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 73, moderate (-15 to -9 dB) 211, strong (≥ -8 dB) 639.

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 GI4DOH in decoded directed-looking exchanges:

ON4MAP · Belgium ×3 MM0HVU · Scotland ×3 RI1FJL · Franz Josef Land ×2 MM0KQC · Scotland ×2 YO5USA · Romania ×2 LB2YJ · Norway ×2 PY3SOL · Brazil ×2 UY7RR · Ukraine ×2 F5RRS · France ×2 R2EN · European Russia ×2 SP9MOA · Poland ×2 ON1BH · Belgium ×2

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 GI4DOH

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: IO74 · 404 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,881 km (approx.)
Last such locator decoded: 2026-09-03 23:50 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	GI4DOH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-03 23:52	160m	-14 / -	MM0HVU	- / -9	2	✓ Closing fragment
09-03 23:50	160m	-15 / -	RI1FJL	- / -18	3	✓ Closing fragment
09-03 21:34	80m	-4 / -	RI1FJL	- / -19	8	✓ Closing fragment
08-22 23:53	40m	-6 / -	N1ECP	- / -13	3	✓ Closing fragment
08-22 23:52	40m	-2 / -	PY2MTG	- / -21	2	✓ Closing fragment
08-22 23:49	40m	-8 / -	LZ3CB	-1 / -9	5	Partial capture
08-22 23:49	40m	-6 / -	PD0IFI	+14 / +1	6	✓ Full exchange observed
08-22 23:47	40m	-4 / -11	SV7SXE	+3 / -15	5	✓ Full exchange observed
08-22 23:47	40m	-4 / -	SP7NC	- / -9	2	✓ Closing fragment
08-22 23:45	40m	-4 / -7	UA4POO	-10 / -4	5	✓ Full exchange observed
08-22 23:45	40m	-4 / -	UN7PPV	-15 / -10	3	✓ Closing observed
08-20 23:17	80m	-11 / -	SP4WJ	- / -10	2	Partial capture
08-20 23:16	80m	-12 / +2	EA7L	-14 / -8	4	✓ Full exchange observed
08-20 23:15	80m	-7 / -	EA3FR	- / -15	2	✓ Closing fragment
08-19 23:09	80m	- / +3	LY1DY	+8 / -	3	✓ Closing fragment
08-19 23:08	80m	-8 / -	EA5XA	- / -19	2	✓ Closing fragment
08-19 23:06	80m	-12 / -	CE2SV	- / -16	2	✓ Closing fragment
08-18 22:52	80m	-18 / -	VU2MSA	- / -	4	Partial capture
08-18 22:51	80m	-16 / -15	PY8JL	-16 / -10	5	✓ Full exchange observed
08-18 22:49	80m	-12 / +6	DO9JTR	+12 / -4	4	✓ Full exchange observed
08-18 22:48	80m	-14 / -15	SM5CBN	+7 / -9	5	✓ Full exchange observed
08-18 22:44	80m	-4 / -10	YT5DL	+10 / -18	5	✓ Full exchange observed
08-18 22:42	80m	-9 / -4	9A3AUH	+3 / -	4	✓ Closing observed
08-18 22:41	80m	-6 / -	VK6DW	- / -17	2	✓ Closing fragment
08-18 22:38	80m	-5 / -8	YT1DDL	+2 / -7	5	✓ Full exchange observed
08-18 00:52	80m	- / -	DL1UDO	-14 / -	2	Partial capture
08-18 00:50	80m	+2 / -	NG2O	-18 / -9	4	✓ Closing observed
08-18 00:47	80m	+8 / -	N3YT	- / -13	2	✓ Closing fragment
08-18 00:47	80m	0 / +1	UR4LBG	+1 / -9	7	✓ Full exchange observed
08-18 00:46	80m	+2 / -9	UA3RW	+7 / -3	5	✓ Full exchange observed
08-18 00:44	80m	-2 / -	RN6HK	- / -1	2	Partial capture
08-18 00:43	80m	-1 / -	W8LRL	-11 / -	2	✓ Closing observed
08-18 00:42	80m	+4 / -13	W3XG	-20 / -19	3	✓ Full exchange observed
08-18 00:40	80m	- / -10	SN1A	+6 / -	3	✓ Closing fragment
08-18 00:37	80m	+2 / -9	EW8CW	+4 / -7	6	✓ Full exchange observed
08-18 00:35	80m	+3 / -10	RY6O	+4 / -	4	✓ Closing observed
08-18 00:33	80m	+1 / -	UK8FCM	- / -	4	Partial capture
08-18 00:11	80m	+2 / -	CX6TU	- / -17	6	✓ Closing fragment
08-16 22:53	80m	-12 / -	LZ1GC	+12 / -4	3	✓ Closing observed
08-16 22:50	80m	-18 / -	R5AV	- / -3	2	✓ Closing fragment
08-16 22:49	80m	-14 / -13	RZ6ALZ	-8 / -13	4	✓ Full exchange observed
08-16 22:48	80m	-10 / -3	GB8VJ	-17 / -4	4	✓ Full exchange observed
08-16 22:47	80m	-7 / 0	DG2EBG	+1 / -4	5	✓ Full exchange observed
08-16 22:46	80m	-15 / +1	DO6JSA	-11 / -3	5	✓ Full exchange observed
08-15 23:20	80m	0 / -17	E78Y	+10 / -1	5	✓ Full exchange observed
08-15 23:18	80m	+3 / -15	VP8A	-17 / -15	8	✓ Full exchange observed
08-15 23:14	80m	+6 / -	SE7LH	- / -11	2	✓ Closing fragment
08-15 23:13	80m	+1 / -	F4GGJ	- / -5	2	✓ Closing fragment
08-15 23:11	80m	-3 / -1	TF3VS	+5 / -4	5	✓ Full exchange observed
08-15 23:07	80m	-2 / -	UA3PY	-13 / -11	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
223030 -10 1827  CQ GI4DOH IO74 (x2)
222030  +1  817  GI4DOH DG1KPC JO30 (x3)
222145 -14 2347  CQ GI4DOH IO74 (x5)
235045 -15 2380  RI1FJL GI4DOH IO74 (x3)
235215 -13 2379  MM0HVU GI4DOH R-09 (x2)

80m

UTC    dB Audio  Message
231615 -13 2454  GI4DOH EA7L IM86
231630 -15 2456  EA7L GI4DOH -08
231645 -15 2456  GI4DOH EA7L R+02
231700  -9 2456  EA7L GI4DOH RR73
231730 -10 2456  SP4WJ GI4DOH -10 (x2)
213415  -6 2094  RI1FJL GI4DOH IO74 (x8)
213800  +7  756  GI4DOH OE3OOG JN87

40m

UTC    dB Audio  Message
234945  +1  849  GI4DOH LZ3CB KN32
235000  -6 2635  PD0IFI GI4DOH +01
235015  -5  849  GI4DOH LZ3CB KN32
235015 +13  701  GI4DOH PD0IFI R+22
235030  -4 2635  PD0IFI GI4DOH RR73
235045  +0  849  GI4DOH LZ3CB KN32
235045 +18  700  GI4DOH PD0IFI 73
235100  -8 2634  LZ3CB GI4DOH -09
235130  -4 2635  CQ GI4DOH IO74 (x2)
235230  -3 2635  PY2MTG GI4DOH R-21 (x2)
235330  -8 2634  N1ECP GI4DOH -13 (x3)

20m

UTC    dB Audio  Message
171400  +5 2120  LY1SR GI4DOH R-12 (x2)
171445 -17 2688  GI4DOH JA1VUQ PM95
171630  +1 2120  F5RRS GI4DOH +02 (x2)
171900  +5 2120  OH3UCU GI4DOH -24 (x2)
172145  +5 2302  GI4DOH GM0DEQ IO75 (x3)
184530  -1 2119  CQ GI4DOH IO74
184615  -5 2119  GI4DOH EB3JT R-04
184630  +3 2350  EB3JT GI4DOH RR73
184645  -3 2119  GI4DOH EB3JT 73
184730  +6 2350  R9FF GI4DOH RR73

10m

UTC    dB Audio  Message
171115 -21 1420  GI4DOH EA3ISZ JN01
171115  -1 2437  GI4DOH F4VTR JN25
171145 -12 1420  GI4DOH EA3ISZ JN01 (x5)
201915 -15 1138  GI4DOH SP2OOO JO94
202500 -12 2609  CQ GI4DOH IO74

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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