OH0ERF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Aland Islands Most frequent locator attributed to this token: KP00

Receiver-side FT8 activity involving OH0ERF, decoded by SO8OO in southeastern Poland. 769 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-06 and 2026-08-12.

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 769 FT8 messages attributed to OH0ERF as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (46%), followed by 80 m (35%) and 40 m (14%). Most decodes (73%) fell within the six-hour window 20:00-02:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (73%); the estimated median was -18 dB.

Overview

769

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

160m · 352 80m · 270 40m · 104 20m · 43

First attributed message: 2026-08-06
Last attributed message: 2026-08-12 06:07 UTC

Observed FT8 message patterns

Attributed sample: 769 messages
Active dates: 7 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -23 to -11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 565, moderate (-15 to -9 dB) 181, strong (≥ -8 dB) 23.

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 OH0ERF in decoded directed-looking exchanges:

DL8TV · Fed. Rep. of Germany ×4 EA3AKY · Spain ×3 F5UTN · France ×3 9A2EU · Croatia ×3 F5OHS · France ×3 F8NHF · France ×3 EA2DYB · Spain ×3 DC4CP · Fed. Rep. of Germany ×2 F1UGD · France ×2 RY7G · European Russia ×2 UA4FKT · European Russia ×2 5P1KZX · Denmark ×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 OH0ERF

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: KP00 · 400 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,176 km (approx.)
Last such locator decoded: 2026-08-12 04:59 UTC

Other locator fields attributed to this token: KP20 (1).

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	OH0ERF S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-12 06:07	20m	-24 / -8	DK8IZ	-14 / 0	3	Partial capture
08-12 06:06	20m	- / -6	DL1NCH	-14 / -	6	Partial capture
08-12 06:02	20m	- / +5	IT9JNR	-14 / -	4	Partial capture
08-12 06:00	20m	- / +3	IS0LJG	-22 / -	3	Partial capture
08-12 05:57	20m	- / -4	IZ2GMR	-6 / -	4	✓ Closing fragment
08-12 05:56	20m	- / -6	IU0WCX	-12 / -	3	✓ Closing fragment
08-12 05:51	20m	- / -4	DG8NFB	-6 / -	5	✓ Closing fragment
08-12 05:46	20m	- / -	DJ5TM	0 / -	6	Partial capture
08-12 05:46	20m	- / -	UT4TA	-11 / -	6	Partial capture
08-12 05:31	20m	- / -4	DL2AOM	-14 / -	2	Partial capture
08-12 05:29	20m	- / -24	DK2LO	-9 / -	17	✓ Closing fragment
08-12 05:21	20m	- / -8	DJ0MAB	-14 / -	4	✓ Closing fragment
08-12 05:18	20m	- / -	R6LQU	-12 / -	2	Partial capture
08-12 05:18	20m	-23 / +3	YT1VDA	-19 / +1	3	✓ Full exchange observed
08-12 05:16	20m	-22 / +2	EB5BSI	-6 / -8	5	✓ Full exchange observed
08-12 05:12	20m	-22 / -9	EA5HM	-8 / -9	5	✓ Full exchange observed
08-12 05:11	20m	- / -	DB4MF	-13 / -	3	Partial capture
08-12 05:06	20m	- / -20	IZ8NON	-14 / -	3	✓ Closing fragment
08-12 04:57	20m	- / -	RG6S	-6 / -	2	Partial capture
08-12 04:56	20m	- / -1	YO9ADN	-3 / -	4	Partial capture
08-12 04:51	20m	- / -8	UX3IW	-7 / -	3	✓ Closing fragment
08-12 04:49	20m	- / +6	R2EC	-4 / -	2	✓ Closing fragment
08-12 04:29	20m	- / -2	YO9CSM	-2 / -	4	✓ Closing fragment
08-12 04:21	20m	- / -10	UR5FS	-16 / -	2	✓ Closing fragment
08-12 04:21	20m	- / +3	UR5RBP	-15 / -	4	✓ Closing fragment
08-12 04:16	20m	- / -16	LZ1BT	-13 / -	3	Partial capture
08-12 03:16	20m	- / -	UT7EM	-16 / -	2	Partial capture
08-12 03:13	20m	- / +2	UT5ECZ	-15 / -	2	✓ Closing fragment
08-12 02:54	20m	- / -8	DL6ZFG	-18 / -	3	✓ Closing fragment
08-12 02:53	20m	- / -5	DL2YCD	-12 / -	3	✓ Closing fragment
08-12 02:44	20m	- / -7	US5EAA	-14 / -	2	Partial capture
08-12 02:36	20m	- / -26	R6OK	-11 / -	3	✓ Closing fragment
08-12 02:23	20m	- / -17	UB3GER	-14 / -	3	✓ Closing fragment
08-12 02:05	20m	- / -5	OK2CNI	-10 / -	2	✓ Closing fragment
08-12 01:27	20m	- / 0	CT7AUT	-20 / -	2	✓ Closing fragment
08-12 01:22	20m	- / -13	IU2VBP	-1 / -	3	✓ Closing fragment
08-12 00:24	20m	- / -9	9A5E	-4 / -	2	Partial capture
08-12 00:07	20m	- / -19	PD1WD	-24 / -	2	Partial capture
08-11 23:57	20m	- / -	YO4MXK	-3 / -	2	Partial capture
08-11 23:53	20m	- / -	IZ3ZQT	-20 / -	2	Partial capture
08-11 23:48	20m	- / -12	SV5BYP	-15 / -	3	✓ Closing fragment
08-11 23:03	160m	- / -4	DL1RWN	+7 / -	2	✓ Closing fragment
08-11 23:02	20m	- / -9	HI8DX	-4 / -	3	✓ Closing fragment
08-11 22:46	20m	- / -	RY6O	-20 / -	2	Partial capture
08-11 22:44	20m	- / -11	UT5MD	+3 / -	12	✓ Closing fragment
08-11 22:42	160m	- / -20	ES5NC	+17 / -	3	✓ Closing fragment
08-11 22:31	160m	- / -14	DL0IZ	+4 / -	3	✓ Closing fragment
08-11 22:31	20m	- / -	IZ3ODB	-6 / -	2	Partial capture
08-11 22:28	20m	- / -9	E71HS	-5 / -	5	✓ Closing fragment
08-11 22:21	160m	- / -15	DJ8ES	+1 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
060215 -22 2078  OH0ERF IS0LJG +03
060230 -18 2406  OH0ERF IT9JNR JM67 (x4)
060630 -17 1887  OH0ERF DL1NCH -06 (x2)
060700 -16 1899  OH0ERF DK8IZ R-08
060715 -24 1887  DK8IZ OH0ERF +00
060730 -11 1937  OH0ERF DL1NCH -04
060730 -13 1899  OH0ERF DK8IZ R-03
060800  -6 1937  OH0ERF DL1NCH -04
060830 -22 2140  OH0ERF OM5DM JN98
060830 -16 1937  OH0ERF DL1NCH -04 (x2)

160m

UTC    dB Audio  Message
221600  +0 1395  OH0ERF DJ8ES JO43 (x7)
223100  +3 1095  OH0ERF DL0IZ JO43 (x3)
224230 +19  298  OH0ERF ES5NC -20 (x3)
230330  +8 2410  OH0ERF DL1RWN -04 (x2)

10m

UTC    dB Audio  Message
175930  -8 1173  OH0ERF R3OR -06 (x2)
180530 -21 1527  OH0ERF RK6OQ KN87 (x2)
180600 -10 2584  OH0ERF F4LDC JN23 (x3)
181230  -6 1274  OH0ERF IZ7UIU JN80
181530 -11  788  OH0ERF RC6OZ KN98
181930 -14 2033  OH0ERF R3EDI +11 (x2)
183200 -13 1392  OH0ERF IW2HUS JN45
183330  -8 2747  OH0ERF CT7BQH -09
183500  -4 2743  OH0ERF LZ2EW KN13 (x2)

80m

UTC    dB Audio  Message
045545 -10 2372  OH0ERF PE1NMM 73
050115 -22 2126  OH0ERF EU6KA KO55 (x3)
204245  -2 1621  OH0ERF HB9AKB JN37 (x9)
213700  -8 1466  OH0ERF OK1VVZ JO70 (x2)

40m

UTC    dB Audio  Message
172730  -4  864  OH0ERF DF2RG JN69 (x5)
173030 -15 1959  OH0ERF DL6FKR JN57
173030  -5  864  OH0ERF DF2RG JN69 (x2)
173130 -16 1959  OH0ERF DL6FKR R+00
173130  -6  864  OH0ERF DF2RG JN69
173200 -15 1959  OH0ERF DL6FKR 73
173200  -4  864  OH0ERF DF2RG JN69
173230 -15 1959  OH0ERF DL6FKR 73
173230  -3  864  OH0ERF DF2RG JN69 (x2)

60m

UTC    dB Audio  Message
185545  -4 1018  OH0ERF SP9SOS KN09 (x2)
045845 +12  401  OH0ERF DJ3AA JN48 (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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