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. 1,092 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 49 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 1,092 FT8 messages attributed to GI4DOH as the transmitting token by decoded message structure across 49 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (60%), followed by 40 m (29%) and 160 m (10%). 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 (68%); the estimated median was -4.5 dB.

Overview

1,092

Messages attributed

UTC dates decoded

112

Active 15-min windows

-4.5 dB

Estimated median S/N

Bands

160m · 107 80m · 655 40m · 319 20m · 10 10m · 1

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 23:53 UTC

Observed FT8 message patterns

Attributed sample: 1,092 messages
Active dates: 49 UTC dates
Estimated median S/N: -4.5 dB
Estimated 10th-90th percentile: -15 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 93, moderate (-15 to -9 dB) 260, strong (≥ -8 dB) 739.

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:

CT2GQA · Portugal ×3 MM0HVU · Scotland ×3 HF5A · Poland ×2 R5AV · European Russia ×2 RI1FJL · Franz Josef Land ×2 LB2YJ · Norway ×2 ON1BH · Belgium ×2 R2EN · European Russia ×2 RN6MA · European Russia ×2 SP9MOA · Poland ×2 DJ7XY · Fed. Rep. of Germany ×2 DO1OAS · Fed. Rep. of Germany ×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 · 495 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,881 km (approx.)
Last such locator decoded: 2026-09-20 23:53 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
09-20 23:52	80m	+3 / -	9Y4D	- / -	3	Partial capture
09-20 23:44	80m	-4 / -	9Y4D	- / -	8	Partial capture
09-20 23:42	80m	0 / -19	R8PD	-11 / -11	4	✓ Full exchange observed
09-20 23:41	80m	-1 / 0	IU2QDY	0 / +1	4	✓ Full exchange observed
09-20 23:40	80m	+1 / -	R9HAG	-24 / -17	3	✓ Closing observed
09-20 23:39	80m	+1 / -	EA3GCT	-7 / -4	3	✓ Closing observed
09-20 23:37	80m	+2 / -19	R9OAE	-6 / -15	6	✓ Full exchange observed
09-20 23:36	80m	-1 / -8	EU7FBB	+5 / -4	5	✓ Full exchange observed
09-20 23:33	80m	+1 / -3	K6RO	-8 / -3	4	✓ Full exchange observed
09-20 23:32	80m	-4 / -2	EW8DU	-1 / -	7	✓ Closing observed
09-20 23:32	80m	0 / -	W9JOY	- / -15	2	✓ Closing fragment
09-20 23:28	80m	-12 / -4	DO5PY	-12 / -7	4	✓ Full exchange observed
09-20 23:28	80m	- / -	R9OAE	-7 / -	3	Partial capture
09-20 23:27	80m	0 / -13	LA9JKA	-11 / -2	11	✓ Full exchange observed
09-20 23:27	80m	- / -	RA6OY	+1 / -	6	Partial capture
09-16 23:14	160m	-16 / -	<...>	- / -	2	Partial capture
09-16 23:11	160m	-8 / -	<...>	- / -	2	Partial capture
09-16 23:05	80m	-7 / -9	5B4AMM	+3 / -11	4	✓ Full exchange observed
09-15 22:51	80m	- / -	IW0RGU	-10 / -	2	Partial capture
09-15 22:48	80m	-11 / -	WA4CHJ	- / -19	2	Partial capture
09-15 22:47	80m	-10 / -4	IV3DSG	0 / -17	5	✓ Full exchange observed
09-15 22:46	80m	-8 / -	EA7GUK	- / -5	2	✓ Closing fragment
09-15 22:41	80m	-10 / -19	RD6OZ	-7 / -16	6	✓ Full exchange observed
09-15 22:37	80m	-9 / +1	DA0O	-15 / -11	5	✓ Full exchange observed
09-15 22:36	80m	-6 / -	M8XDZ	- / -14	2	✓ Closing fragment
09-15 22:34	80m	-3 / -4	DO1OAS	-10 / -8	7	✓ Full exchange observed
09-15 22:01	80m	-10 / -17	TK/4O7CC	+1 / -16	2	Partial capture
09-15 22:00	80m	-4 / -	RD9M/3	- / -14	2	Partial capture
09-15 21:57	80m	-6 / -8	DF5AH	-7 / -8	4	✓ Full exchange observed
09-15 21:51	80m	-2 / -19	TK/4O7CC	+1 / -	8	Partial capture
09-15 21:49	80m	-10 / -	II8IHBC	- / -	2	Partial capture
09-15 19:56	80m	-12 / -	ER5DX	- / -	5	Partial capture
09-14 23:03	160m	-10 / -	CT2GQA	- / -10	4	✓ Closing fragment
09-08 23:06	80m	-2 / -	9H5SN	- / -	16	Partial capture
09-08 23:04	80m	-1 / -	VE1CHL	- / -	2	✓ Closing fragment
09-08 23:00	80m	-5 / -	KP4AA	-17 / -7	6	✓ Closing observed
09-08 22:58	80m	-3 / -3	R3PJV	-3 / -11	5	✓ Full exchange observed
09-08 22:56	80m	-1 / +5	DK2DB	+10 / -7	6	✓ Full exchange observed
09-08 22:56	80m	+2 / +3	OH3GBW	-7 / -13	5	✓ Full exchange observed
09-07 21:53	160m	-9 / -	G0WZM	- / -7	2	✓ Closing fragment
09-07 21:53	160m	-11 / +9	DJ3JD	-6 / -12	7	✓ Full exchange observed
09-07 21:50	160m	-10 / -9	HF5A	+8 / -18	7	✓ Full exchange observed
09-06 21:58	160m	-16 / -3	DF3JO	-14 / -24	5	✓ Full exchange observed
09-06 21:57	160m	- / -	4L7T	-6 / -	4	Partial capture
09-06 21:56	160m	-15 / -12	R5AV	0 / -14	3	✓ Full exchange observed
09-05 22:13	160m	-23 / -6	EA5J	-17 / -18	2	Partial capture
09-05 22:11	160m	-12 / -	GM4JYB	-18 / +2	3	✓ Full exchange observed
09-05 22:10	160m	-18 / -	M0OTE	- / -12	2	✓ Closing fragment
09-05 22:09	160m	-16 / -	CT2GQA	-20 / -8	3	✓ Closing observed
09-05 22:09	160m	- / -10	IN3EQZ	-8 / -	10	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
234215 -16 1293  GI4DOH R8PD NO14
234230  -2 2142  R8PD GI4DOH -11
234245  -6 1293  GI4DOH R8PD R-19
234300  +2 2142  R8PD GI4DOH RR73
234430  -1 2142  9Y4D GI4DOH IO74 (x11)

160m

UTC    dB Audio  Message
225430 -11 2123  CQ GI4DOH IO74 (x3)
230330 -10  867  CT2GQA GI4DOH -10 (x4)
230630 -11  867  CQ GI4DOH IO74 (x2)
231145  -7 2457  <...> GI4DOH IO74 (x2)
231300  +0  298  GI4DOH TK/4O7CC -19
231445 -15 2155  <...> GI4DOH IO74 (x2)
232330 -23 1839  VP2MAA GI4DOH IO74

40m

UTC    dB Audio  Message
234945  +1  849  GI4DOH LZ3CB KN32
235000  -6 2635  PD0IFI GI4DOH +01
235015 +13  701  GI4DOH PD0IFI R+22
235015  -5  849  GI4DOH LZ3CB KN32
235030  -4 2635  PD0IFI GI4DOH RR73
235045 +18  700  GI4DOH PD0IFI 73
235045  +0  849  GI4DOH LZ3CB KN32
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)

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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