OH8EFI — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP25

Receiver-side FT8 activity involving OH8EFI, decoded by SO8OO in southeastern Poland. 37 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-10-05 and 2026-11-03.

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 37 FT8 messages attributed to OH8EFI as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (49%), followed by 40 m (41%) and 80 m (11%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

80m · 4 60m · 18 40m · 15

First attributed message: 2026-10-05
Last attributed message: 2026-11-03 16:16 UTC

Observed FT8 message patterns

Attributed sample: 37 messages
Active dates: 3 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -23 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 1.

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 OH8EFI in decoded directed-looking exchanges:

EC3A · Spain IU2THY · Italy SM6JRG · Sweden DK4RH · Fed. Rep. of Germany DL5ZG · Fed. Rep. of Germany DL6KA · Fed. Rep. of Germany EA1IOK · Spain EA5TT · Spain ER3ZW · Moldova F5RMK · France F5RRS · France HA5UK · Hungary

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 OH8EFI

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: KP25 · 13 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,740 km (approx.)
Last such locator decoded: 2026-11-03 16:12 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	OH8EFI S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-03 16:19	40m	- / +9	SM6JRG	-5 / -	3	✓ Closing fragment
11-03 16:19	40m	- / -18	UA4FEN	-10 / -	3	Partial capture
11-03 16:14	40m	-10 / -12	EC3A	-22 / -6	4	✓ Full exchange observed
11-03 16:14	40m	-10 / -	IU2THY	- / -11	2	✓ Closing fragment
11-03 16:12	40m	- / -15	OE5FIL	-7 / -	2	Partial capture
11-03 15:54	40m	-11 / -	YE4FNN	- / -	6	Partial capture
11-02 19:03	60m	-20 / -16	EA5TT	-4 / -14	6	✓ Full exchange observed
11-02 19:00	60m	- / -13	PA3BMB	-6 / -	3	✓ Closing fragment
11-02 18:58	60m	- / -10	DK4RH	-12 / -	3	✓ Closing fragment
11-02 18:56	60m	- / -15	PC2J	-1 / -	3	✓ Closing fragment
11-02 18:53	60m	-21 / -18	LZ1SAD	-4 / -12	8	✓ Full exchange observed
11-02 18:51	60m	- / -12	DL6KA	-6 / -	3	✓ Closing fragment
11-02 18:49	60m	- / -11	F5RMK	-18 / -	2	✓ Closing fragment
11-02 18:45	60m	- / -10	DL5ZG	-14 / -	4	✓ Closing fragment
11-02 18:45	60m	-21 / -	HA5UK	-19 / -	2	✓ Closing observed
11-02 18:44	60m	-20 / 0	EA1IOK	-15 / 0	7	✓ Full exchange observed
11-02 18:43	60m	-16 / -15	F5RRS	+2 / -	4	✓ Closing observed
11-02 18:41	60m	-20 / -19	OK1BN	+13 / -	6	✓ Full exchange observed
11-02 18:39	60m	-17 / -18	ER3ZW	-21 / -12	4	✓ Full exchange observed
11-02 18:33	80m	- / -15	OK1UOZ	+3 / -	4	✓ Closing fragment
11-02 18:31	80m	- / -	UC6D	-4 / -	2	Partial capture
11-02 18:30	80m	-22 / -24	DA1ST	-4 / -15	7	✓ Full exchange observed
11-02 18:27	80m	- / -17	LY3BFH	+13 / -	2	✓ Closing fragment
11-02 18:25	80m	- / -10	LA2JKA	+3 / -	5	✓ Closing fragment
10-05 16:29	40m	-17 / -14	OH3MB	0 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
161315  -7 1722  OH8EFI OE5FIL R-15
161400 -10 2457  IU2THY OH8EFI -11 (x2)
161445 -21 1654  OH8EFI EC3A -12
161500 -10 2457  EC3A OH8EFI R-06
161515 -22 1654  OH8EFI EC3A RR73
161530 -10 2457  EC3A OH8EFI 73
161600  -9 2458  M0LMN OH8EFI -10
161945 -14 2459  OH8EFI UA4FEN -18
161945 -10  425  OH8EFI SM6JRG JO67
162015  -9 2459  OH8EFI UA4FEN -18 (x2)
162045  -2  425  OH8EFI SM6JRG R+09 (x2)
162145 -16 1631  OH8EFI RC5F KO85

60m

UTC    dB Audio  Message
185830 -12 2175  OH8EFI DK4RH JO31 (x3)
190000  -3 2174  OH8EFI PA3BMB JO22 (x3)
190115 -16 2174  CQ OH8EFI KP25
190300  -7  455  OH8EFI EA5TT IM99 (x2)
190345 -22 2174  EA5TT OH8EFI -14
190400  -2  455  OH8EFI EA5TT R-16
190415 -18 2174  EA5TT OH8EFI RR73
190430  -7  455  OH8EFI EA5TT 73
190445 -17 2174  CQ OH8EFI KP25
190515 -20 2174  OH6FSG OH8EFI -16

80m

UTC    dB Audio  Message
183030 -23 2085  DA1ST OH8EFI -15
183045  -6 2085  OH8EFI DA1ST JO41
183100  -4 1372  OH8EFI UC6D KN95
183100 -24 2085  DA1ST OH8EFI -15
183115  -3 2085  OH8EFI DA1ST R-24
183130  -3 1372  OH8EFI UC6D KN95
183145  -2 2085  OH8EFI DA1ST R-24
183200 -20 2085  DA1ST OH8EFI RR73
183215  -5 2085  OH8EFI DA1ST 73
183315  +3 2085  OH8EFI OK1UOZ JO70
183315  +7 1163  OH8EFI DL/OE6BVG R-14
183345  +4 2085  OH8EFI OK1UOZ JO70 (x3)
183715  +8 2259  OH8EFI DL8TV -19

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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