OK2UPG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JN99

Receiver-side FT8 activity involving OK2UPG, decoded by SO8OO in southeastern Poland. 1,428 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 89 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-05.

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 1,428 FT8 messages attributed to OK2UPG as the transmitting token by decoded message structure across 89 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (75%), followed by 40 m (23%) and 20 m (1%). The busiest six-hour window was 23:00-05:00 UTC, containing 43% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (93%); the estimated median was +12.2 dB.

Overview

1,428

Messages attributed

UTC dates decoded

234

Active 15-min windows

+12.2 dB

Estimated median S/N

Bands

80m · 1,076 40m · 332 20m · 20

First attributed message: 2026-06-07
Last attributed message: 2026-10-05 06:28 UTC

Observed FT8 message patterns

Attributed sample: 1,428 messages
Active dates: 89 UTC dates
Estimated median S/N: +12.2 dB
Estimated 10th-90th percentile: -6.7 to +20 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 89, strong (≥ -8 dB) 1,333.

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 OK2UPG in decoded directed-looking exchanges:

SP5MXZ · Poland ×3 SP1ZMO · Poland ×2 TF4M · Iceland ×2 YO9IAB · Romania ×2 DL5CK · Fed. Rep. of Germany ×2 HA7JDU · Hungary ×2 PA4CC · Netherlands ×2 ES2AJ · Estonia F4FSY · France F4IIJ · France F4PCM · France CN2DX · Morocco

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 OK2UPG

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: JN99 · 923 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 206 km (approx.)
Last such locator decoded: 2026-10-05 06:27 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	OK2UPG S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-05 06:26	80m	+16 / -	DO8JB	- / +3	4	Partial capture
10-05 06:24	80m	+18 / +9	HA8UM	+4 / +6	6	✓ Full exchange observed
10-05 06:22	80m	+16 / -1	PA0O	+4 / -	5	✓ Full exchange observed
10-04 15:24	40m	-7 / -	S57ACD	- / -	4	✓ Closing fragment
10-04 02:30	80m	+1 / -	UA3AGW	- / -	2	Partial capture
10-04 02:28	80m	-7 / -1	DO4DXA	+7 / +8	5	✓ Full exchange observed
10-04 02:25	80m	-4 / +2	YT1MP	0 / -	8	✓ Full exchange observed
10-02 20:21	80m	- / -6	SP5HQZ	+6 / -	2	✓ Closing fragment
10-02 20:14	80m	-5 / -	OZ1HPS	- / +5	4	✓ Closing fragment
10-02 16:41	80m	+16 / -	SQ3WL	- / -	2	Partial capture
10-02 16:38	80m	+11 / 0	SP7VCL	+6 / -	5	✓ Full exchange observed
10-02 03:38	80m	+12 / +2	3Z6SK	+2 / -2	6	✓ Full exchange observed
10-02 03:32	80m	+15 / -6	SQ1X	-10 / -	6	✓ Full exchange observed
09-30 08:20	40m	-8 / -	ON7GG	- / -	2	Partial capture
09-30 03:30	80m	+21 / -	YL2VW	- / -	6	Partial capture
09-29 18:32	80m	- / -	DO8JB	-9 / -	9	Partial capture
09-29 18:29	80m	+12 / +1	DD4U	-2 / +10	9	✓ Full exchange observed
09-29 15:08	40m	-8 / -	UN9LBC	- / -10	3	✓ Closing fragment
09-29 15:05	40m	-10 / -4	OE8DDX	+10 / -	5	✓ Full exchange observed
09-29 15:05	40m	-9 / -	F6FHZ	-16 / -7	4	✓ Closing observed
09-29 15:03	40m	-10 / -	HB9ELE	+6 / -	5	✓ Closing observed
09-29 05:19	80m	- / -6	SP5TAE	0 / -	2	Partial capture
09-29 05:17	40m	- / +5	HB9IRO	0 / -	2	✓ Closing fragment
09-29 05:12	80m	+17 / -	SP5TAE	- / -	5	Partial capture
09-29 04:57	80m	+18 / -8	SP2DPK	+4 / +7	8	✓ Full exchange observed
09-28 00:16	80m	+13 / -	DO7KGB	- / -2	3	✓ Closing fragment
09-28 00:13	80m	+14 / +4	DL7ACA	+10 / +3	7	✓ Full exchange observed
09-28 00:13	80m	+12 / +2	SP5HZM	+8 / -	5	✓ Full exchange observed
09-28 00:12	80m	+11 / -	GM6URC	- / +6	3	✓ Closing fragment
09-26 02:13	80m	+3 / -	LZ1EV	- / -	3	Partial capture
09-26 02:10	80m	+4 / -	DD4VA	-20 / +8	5	✓ Closing observed
09-26 02:08	80m	+2 / -	PA3KUS	- / -	3	Partial capture
09-24 05:06	80m	-4 / -13	HB3YBK	-8 / -	4	✓ Closing observed
09-24 05:05	80m	0 / -	DO7RA	- / +7	2	Partial capture
09-23 12:01	40m	-3 / 0	HA7TM	+12 / -	5	Partial capture
09-23 12:00	40m	-3 / +10	DK4FH	-8 / +4	5	✓ Full exchange observed
09-22 19:07	80m	+10 / -	DF1OLS	- / -	2	Partial capture
09-22 19:02	80m	+5 / -	IZ8KVW	- / +5	5	✓ Closing fragment
09-22 18:57	80m	-7 / +5	SQ1KD	+12 / -	4	✓ Full exchange observed
09-22 18:54	80m	+22 / +10	SP2SGZ	0 / +6	6	✓ Full exchange observed
09-22 18:34	40m	- / -10	RC2Y	+2 / -	2	✓ Closing fragment
09-22 18:10	80m	+16 / -	DL0VW	- / +7	6	Partial capture
09-22 18:09	80m	+18 / -	SP5MXZ	+14 / -	4	✓ Full exchange observed
09-22 11:52	40m	-6 / -	ZA5G	- / -11	2	Partial capture
09-22 03:29	80m	+10 / -	SP2SGZ	- / -	3	Partial capture
09-22 03:27	80m	+14 / -	YV6BXN	- / -	4	Partial capture
09-22 03:23	80m	+10 / -	YV6BXN	- / -	2	Partial capture
09-21 03:58	80m	+19 / -	R2AZK/1	- / +1	2	Partial capture
09-20 14:59	40m	-1 / -	SQ3DAB	- / -	4	Partial capture
09-20 14:56	40m	-6 / -	PD0IFI	- / +9	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
062245 +17  737  PA0O OK2UPG JN99
062300  +4 2863  OK2UPG PA0O -01
062315 +16  737  PA0O OK2UPG R+27
062330  +4 2863  OK2UPG PA0O RR73
062345 +16  737  PA0O OK2UPG 73
062430 +16  737  HA8UM OK2UPG JN99 (x2)
062515  +4 1415  OK2UPG HA8UM +09
062530 +17  737  HA8UM OK2UPG R+06
062545  +3 1415  OK2UPG HA8UM RR73
062600 +19  737  HA8UM OK2UPG 73
062630 +16  737  DO8JB OK2UPG JN99 (x4)

40m

UTC    dB Audio  Message
150645 -16  776  OK2UPG F6FHZ 73
150715  +7  673  OK2UPG OE8DDX -04
150730 -11  776  OE8DDX OK2UPG R+20 (x2)
150830 -10  777  UN9LBC OK2UPG -10 (x3)
033915  -4  238  OK2UPG SV4LGX -19
082030  -7  778  ON7GG OK2UPG JN99 (x2)
152400  -7  777  S57ACD OK2UPG JN99 (x4)
174245  -8 1588  OK2UPG SQ3PMX -11

20m

UTC    dB Audio  Message
231045  -7  819  YN7DS OK2UPG JN99 (x3)
095215  -5 1420  OK2UPG ON4AOI -10
123645  +2  823  OK2UPG F5OYA/P -07
123715  +2  435  OK2UPG <...> -07
124400  +2  432  OK2UPG TA3KJ -04 (x3)
125400  -8  936  OK2UPG TA2PCB -12
075000 +12 2831  OK2UPG RD3FY KO85 (x3)
114400  +4  822  OK2UPG SP1ZMO -09 (x2)

10m

UTC    dB Audio  Message
131245 -15 2142  OK2UPG ES2AJ -03 (x2)
095730  -9  848  OK2UPG F4PCM +06 (x2)
084930  -7 1029  OK2UPG EN35UKR -09
092945 -13  994  OK2UPG HB10GBT -01
145830 -12 1613  OK2UPG F4FSY -10 (x2)
150145 -10 2143  OK2UPG F4IIJ -12 (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.

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