OH5TJ — 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: KP10

Receiver-side FT8 activity involving OH5TJ, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 80m, across 4 UTC dates in the available aggregate history. Observed between 2026-10-26 and 2026-11-02.

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 50 FT8 messages attributed to OH5TJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). Most decodes (100%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 50

First attributed message: 2026-10-26
Last attributed message: 2026-11-02 19:52 UTC

Observed FT8 message patterns

Attributed sample: 50 messages
Active dates: 4 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -17 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 33.

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 OH5TJ in decoded directed-looking exchanges:

4L7T · Georgia DO5HOK · Fed. Rep. of Germany DO9AO · Fed. Rep. of Germany OH1LWZ · Finland OH1TSM · Finland SP4WJ · Poland SQ1OOP · Poland YL2KF · Latvia YT2ZE · Serbia Z62NS · Republic of Kosovo

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 OH5TJ

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: KP10 · 28 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,177 km (approx.)
Last such locator decoded: 2026-11-02 19:52 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	OH5TJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 17:55	80m	-12 / -	TA4SSK	- / -	2	Partial capture
11-01 17:37	80m	- / -15	Z62NS	-8 / -	2	✓ Closing fragment
11-01 17:17	80m	-19 / -19	YT2ZE	-6 / -9	3	✓ Full exchange observed
11-01 17:16	80m	-9 / 0	OH1LWZ	-1 / -4	3	✓ Full exchange observed
11-01 15:00	80m	- / -14	R2EA	-1 / -	2	Partial capture
11-01 15:00	80m	-3 / -	RN6LBT	- / -	3	Partial capture
10-27 18:05	80m	-6 / -7	SP4WJ	-4 / -4	6	✓ Full exchange observed
10-27 18:04	80m	+4 / -7	DO5HOK	-17 / -22	4	✓ Full exchange observed
10-27 17:58	80m	- / -	IZ4ORF	-11 / -	4	Partial capture
10-27 17:58	80m	0 / -	OH7FXK	-6 / +7	3	Partial capture
10-27 17:56	80m	+5 / -6	E70SZ	-3 / -	6	Partial capture
10-27 17:24	80m	+4 / -	DO7AGN	- / -	2	Partial capture
10-27 17:22	80m	- / -	HG7JLG	-16 / -	2	Partial capture
10-27 15:35	80m	-14 / -	UB3PAQ	-17 / -5	3	Partial capture
10-27 15:33	80m	-6 / +2	YL2KF	-4 / -	5	✓ Full exchange observed
10-27 15:30	80m	+2 / -	DO9AO	+14 / -11	4	✓ Closing observed
10-27 15:28	80m	- / -17	RA3TD	-5 / -	7	Partial capture
10-27 15:27	80m	0 / -	OH1TSM	0 / -	4	✓ Closing observed
10-27 15:24	80m	- / -17	RA3TD	-4 / -	4	Partial capture
10-27 15:23	80m	- / -	UA4FET	-9 / -	2	Partial capture
10-27 15:21	80m	+5 / -3	4L7T	-11 / -21	5	✓ Full exchange observed
10-26 19:24	80m	-1 / -15	SQ1OOP	-6 / -6	7	✓ Full exchange observed
10-26 19:23	80m	-5 / -	ON1PK	- / -	2	Partial capture
10-26 15:12	80m	-18 / -	XX9TXN	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
171345 -17  931  EY7BP OH5TJ KP10
171645  -9 1672  OH1LWZ OH5TJ -04
171700  -4 1672  OH5TJ YT2ZE -19
171745 -19 1672  YT2ZE OH5TJ R-09
171800  -8 1672  OH5TJ YT2ZE RR73
171830  -1  843  OH5TJ OH1LWZ R+00 (x2)
173745  -4 1698  OH5TJ Z62NS -15 (x2)
174830  -5 1552  E79D OH5TJ KP10
175545 -12 1155  TA4SSK OH5TJ KP10 (x2)
180030  -1 1698  Z62NS OH5TJ KP10
162015 -10 1341  EX7DY OH5TJ KP10 (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.

CW

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

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee