DB3OI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO52

Receiver-side FT8 activity involving DB3OI, decoded by SO8OO in southeastern Poland. 1,938 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 95 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-13.

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 1,938 FT8 messages attributed to DB3OI as the transmitting token by decoded message structure across 95 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (48%), followed by 40 m (22%) and 160 m (15%). Most decodes (61%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -5 dB.

Overview

1,938

Messages attributed

UTC dates decoded

275

Active 15-min windows

-5 dB

Estimated median S/N

Bands

160m · 296 80m · 931 60m · 266 40m · 425 20m · 15 10m · 5

First attributed message: 2026-06-06
Last attributed message: 2026-10-13 15:33 UTC

Observed FT8 message patterns

Attributed sample: 1,938 messages
Active dates: 95 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -15.9 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 200, moderate (-15 to -9 dB) 470, strong (≥ -8 dB) 1,268.

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 DB3OI in decoded directed-looking exchanges:

R5AV · European Russia ×4 CT2GQA · Portugal ×3 DL9KM · Fed. Rep. of Germany ×3 F1PBZ · France ×3 EA2DYB · Spain ×3 LA1QRO · Norway ×2 RK6OQ · European Russia ×2 RV3ZK · European Russia ×2 SP2GJI · Poland ×2 SQ2BXI · Poland ×2 DL1IP · Fed. Rep. of Germany ×2 F1IQH · France ×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 DB3OI

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: JO52 · 1,082 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 803 km (approx.)
Last such locator decoded: 2026-10-13 15:32 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	DB3OI S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-13 15:31	40m	-5 / -	R5BM/6	- / -	3	Partial capture
10-11 05:51	80m	-6 / +6	DO2NM	-3 / +5	5	✓ Full exchange observed
10-11 05:49	80m	-2 / -	F1IQH	-18 / -3	4	✓ Closing observed
10-10 20:03	80m	+2 / +2	SP9VEY	-7 / +6	3	✓ Full exchange observed
10-10 20:00	160m	-1 / +2	M0IOY	-4 / -11	3	✓ Full exchange observed
10-10 19:59	160m	+4 / -10	RK6OQ	-5 / -5	5	✓ Full exchange observed
10-10 17:28	80m	+2 / +3	DJ7XY	-4 / +3	5	✓ Full exchange observed
10-10 17:25	80m	+6 / +2	E70SZ	-2 / +3	5	✓ Full exchange observed
10-10 17:23	80m	+9 / -	DB2GM	- / -13	2	✓ Closing fragment
10-10 17:21	80m	+5 / +7	OZ5NJ	+6 / -	5	✓ Full exchange observed
10-10 06:08	40m	-2 / -10	UW8SM	+10 / +9	5	✓ Full exchange observed
10-10 06:06	40m	-4 / -	ZL2BBR	- / -	2	Partial capture
10-10 06:05	40m	-8 / -	EA3ISZ	- / -12	3	Partial capture
10-10 06:04	40m	-7 / -	GJ0KYZ	-10 / -	2	✓ Closing observed
10-10 06:01	40m	-15 / -	ZL2BBR	- / -	2	Partial capture
10-09 20:29	160m	-6 / -	DO5SB	- / -13	2	✓ Closing fragment
10-09 20:26	160m	-10 / -	CT1CHT	- / -10	4	✓ Closing fragment
10-09 20:24	160m	-8 / -	DL4BCY	-8 / -	3	Partial capture
10-09 15:59	80m	+2 / -	ON7YG	- / +1	2	✓ Closing fragment
10-09 15:55	80m	0 / -15	IK2UCK	-6 / -5	5	✓ Full exchange observed
10-09 15:55	80m	0 / -	DO6KGS	- / -12	2	✓ Closing fragment
10-09 15:53	80m	-1 / -18	R6ZB	0 / -16	4	✓ Full exchange observed
10-09 05:20	80m	-1 / -8	9A3TGT	+2 / 0	6	✓ Full exchange observed
10-09 05:19	80m	+1 / -	OZ1BM	-7 / -	4	✓ Closing observed
10-09 05:17	80m	+2 / -	EA5PS	- / -2	2	✓ Closing fragment
10-09 05:15	80m	-2 / -	SM7TZK	-15 / +8	3	✓ Closing observed
10-09 05:13	80m	+6 / -5	M9XPN	-18 / -2	4	✓ Full exchange observed
10-09 05:11	80m	+8 / -10	EU1EU	0 / -13	5	✓ Full exchange observed
10-09 04:12	80m	- / -	E75FM	+6 / -	2	Partial capture
10-08 20:13	160m	-8 / -2	F1PBZ	-16 / -6	4	✓ Full exchange observed
10-08 20:12	160m	-3 / -1	DL5BTE	+6 / +7	4	✓ Full exchange observed
10-08 20:11	160m	-2 / -	<...>	- / -	2	Partial capture
10-07 20:02	160m	-5 / -	S57MPU	- / -	2	Partial capture
10-07 19:57	160m	-6 / -20	R5AV	-4 / -18	4	✓ Full exchange observed
10-07 19:57	160m	-4 / -3	SQ2BXI	-10 / -18	5	✓ Full exchange observed
10-07 17:22	80m	- / -	DL/AD2LX	-4 / -	2	Partial capture
10-07 17:21	80m	+6 / -9	RZ2B	+3 / +3	5	✓ Full exchange observed
10-07 16:01	40m	-2 / -	R9FDE	- / -16	2	Partial capture
10-07 04:34	160m	0 / -	9H1ES	- / -	2	Partial capture
10-06 20:19	160m	-6 / -12	SQ9BC	+18 / +8	4	✓ Full exchange observed
10-06 20:18	160m	-8 / -16	UW2ZO	0 / -7	5	✓ Full exchange observed
10-06 20:14	160m	-8 / -1	PA4PA	-5 / +7	5	✓ Full exchange observed
10-06 20:13	160m	-4 / -	S57MPU	- / -	4	Partial capture
10-06 04:03	80m	-12 / -6	DL4DP	-16 / -6	4	✓ Full exchange observed
10-06 04:01	80m	-16 / -	M7KEV	- / -9	3	✓ Closing fragment
10-06 04:01	80m	- / -	E75FM	+1 / -	3	Partial capture
10-06 04:01	80m	-9 / -13	YO4GOU	-17 / -24	7	✓ Full exchange observed
10-06 03:54	60m	-10 / -	SV9FBK	- / -15	3	✓ Closing fragment
10-05 20:12	80m	+1 / -	TA4SSK	-24 / -24	6	✓ Closing observed
10-05 20:05	60m	-5 / -6	DL8FBD	+1 / +2	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
060545  -6 1290  EA3ISZ DB3OI -12 (x2)
060645  -5 1289  ZL2BBR DB3OI JO52 (x2)
060745  -5 1289  CQ DB3OI JO52
060800 +11  630  DB3OI UW8SM KN28
060815  -1 1288  UW8SM DB3OI +09
060830 +10  631  DB3OI UW8SM R-10
060845  -4 1288  UW8SM DB3OI RR73
060900 +10  631  DB3OI UW8SM 73
060945  -6 1288  ZL2BBR DB3OI JO52
153145  -6  749  R5BM/6 DB3OI JO52 (x2)
153330 +13  573  DB3OI DA125RH +20
153345  -1  747  R5BM/6 DB3OI R+17

80m

UTC    dB Audio  Message
054900  -7  937  CQ DB3OI JO52                         a1
054915 -15  937  DB3OI F1IQH JN27
054930  -2  937  F1IQH DB3OI -03 (x2)
055015 -20  937  DB3OI F1IQH 73
055030  -4  936  CQ DB3OI JO52 (x2)
055115  -3  936  DB3OI DO2NM JO50
055130  -5  936  DO2NM DB3OI +05
055145  -5  936  DB3OI DO2NM R+06
055200  -6  936  DO2NM DB3OI RR73
055215  -1  936  DB3OI DO2NM 73
055230  -4  935  CQ DB3OI JO52 (x3)

160m

UTC    dB Audio  Message
202830  -3 2345  CQ DB3OI JO52 (x2)
202930  -6 2345  DO5SB DB3OI -13 (x2)
171830  -6 1491  G4GVB DB3OI JO52
195830  +3 2165  CQ DB3OI JO52 (x2)
195915  -3 1502  DB3OI RK6OQ KN87
195930  +7 2165  RK6OQ DB3OI -05
195945  -6 1502  DB3OI RK6OQ R-10
200000  +1 2165  RK6OQ DB3OI RR73
200015  -6 1502  DB3OI RK6OQ 73
200030  +0 2165  M0IOY DB3OI -11
200045  -4 1067  DB3OI M0IOY R+02
200100  -2 2165  M0IOY DB3OI RR73

60m

UTC    dB Audio  Message
200830  -5 1560  IW2CAK DB3OI RR73
200845  -9  434  DB3OI IW2CAK 73
200900  +2 1560  CQ DB3OI JO52 (x6)
035430  -9 2250  SV9FBK DB3OI JO52 (x3)
035600 -11 2250  CQ DB3OI JO52 (x4)

10m

UTC    dB Audio  Message
133600 -15 2079  EI7GSB DB3OI JO52 (x4)
125430 -17 2076  OH6CXP DB3OI JO52
152830  -8  803  DB3OI R50RKZ -05 (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.

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