OH3CD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP11

Receiver-side FT8 activity involving OH3CD, decoded by SO8OO in southeastern Poland. 548 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-30 and 2026-09-17.

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 548 FT8 messages attributed to OH3CD as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (63%), followed by 40 m (22%) and 20 m (11%). Most decodes (78%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

548

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 346 60m · 24 40m · 118 20m · 60

First attributed message: 2026-06-30
Last attributed message: 2026-09-17 19:34 UTC

Observed FT8 message patterns

Attributed sample: 548 messages
Active dates: 17 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -18 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 96, moderate (-15 to -9 dB) 206, strong (≥ -8 dB) 246.

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 OH3CD in decoded directed-looking exchanges:

HB9EFK · Switzerland ×3 DH1KJ · Fed. Rep. of Germany ×2 DK6WH · Fed. Rep. of Germany ×2 F4FSY · France ×2 HZ1TT · Saudi Arabia ×2 IQ4JO · Italy ×2 ON3NR · Belgium ×2 SV2HTW · Greece ×2 SV5BYP · Dodecanese ×2 UX7QV · Ukraine ×2 9A4ZM · Croatia ×2 CR7BRV · Portugal ×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 OH3CD

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: KP11 · 268 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,288 km (approx.)
Last such locator decoded: 2026-09-17 18:10 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	OH3CD S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 19:40	80m	- / -12	5P1KZX	+4 / -	2	✓ Closing fragment
09-17 19:34	80m	- / -24	DK2MAX	+4 / -	7	✓ Closing fragment
09-17 19:33	80m	-13 / -21	DO4CNA	-4 / -9	4	✓ Full exchange observed
09-17 19:31	80m	- / -11	ES6RMR	-8 / -	3	✓ Closing fragment
09-17 19:16	80m	- / -	SM3MLX	-14 / -	2	✓ Closing fragment
09-17 18:08	40m	-8 / -6	I0XNH	0 / -	3	✓ Closing observed
09-17 18:06	40m	-5 / -	S58Y	- / -	3	Partial capture
09-17 18:03	40m	-5 / -6	E77WM	-4 / -	4	Partial capture
09-17 18:01	40m	-10 / -9	SV1DZB	+2 / -4	5	✓ Full exchange observed
09-17 18:00	40m	-12 / -11	LY7TI	-12 / -	6	Partial capture
09-17 17:58	40m	-14 / -	LY2TS	-5 / -	5	✓ Full exchange observed
09-17 17:57	40m	- / -12	9A3MRN	+8 / -	2	✓ Closing fragment
09-17 17:54	40m	-14 / -16	HA1BF	+3 / -	5	✓ Closing observed
09-17 17:52	40m	-14 / -6	UT7NI	-5 / +7	5	✓ Full exchange observed
09-17 17:50	40m	-12 / -	SQ9BDB	- / -1	2	Partial capture
09-17 17:47	40m	-9 / +3	DL3GA	+20 / +4	4	✓ Full exchange observed
09-17 17:44	40m	- / -11	G4DZE	-6 / -	2	✓ Closing fragment
09-17 17:33	60m	-21 / -1	OM5ZW	+9 / -	3	✓ Closing observed
09-17 17:31	60m	-19 / -7	ON7GB	-12 / -	5	✓ Closing observed
09-17 17:29	60m	-14 / -	SM2OTU	-16 / -	4	✓ Full exchange observed
09-11 02:12	40m	- / -13	CT7AUT	-12 / -	2	✓ Closing fragment
09-11 02:04	40m	- / -13	CR7BRV	-2 / -	3	✓ Closing fragment
09-11 02:02	40m	- / -25	HZ1TT	-7 / -	2	✓ Closing fragment
09-10 18:29	40m	-17 / -	SM7TZK	- / +7	3	✓ Closing fragment
09-10 17:39	80m	-7 / -	DA6IT	- / -15	2	Partial capture
09-10 17:35	80m	-4 / -18	DA6IT	-8 / -	3	Partial capture
09-10 17:32	80m	-13 / -18	SV3CEZ	-22 / -	5	✓ Closing observed
09-10 17:28	80m	-16 / -	UA3ZQN	+6 / +7	6	✓ Closing observed
09-10 17:25	80m	- / -11	DO2SBS	0 / -	2	✓ Closing fragment
09-10 17:12	80m	-6 / -1	OH1IM	+4 / -	4	✓ Full exchange observed
09-10 17:08	80m	-6 / -19	DL5JMN	+1 / -15	7	✓ Full exchange observed
09-10 17:05	80m	-16 / -18	SP6TRK	+10 / -	3	✓ Closing observed
09-10 17:03	80m	-8 / -	DO2TO	- / -	2	Partial capture
09-10 16:44	80m	-10 / -20	YO6LM	+10 / -	4	✓ Closing observed
09-10 16:41	80m	- / -16	EW6BZ	+6 / -	2	✓ Closing fragment
09-10 16:35	80m	- / -18	DO1LKG	-20 / -	2	Partial capture
09-10 16:33	80m	-24 / -14	DO7MRC	-7 / -	4	✓ Closing observed
09-10 16:31	80m	-16 / -	EW8CW	+1 / -10	4	✓ Closing observed
09-10 16:13	80m	-18 / -15	UT7UA	+16 / -13	7	✓ Full exchange observed
09-10 16:11	80m	-19 / -	OH3HE	- / +4	3	✓ Closing fragment
09-09 18:27	80m	-10 / -2	OH7MFO	-15 / -3	3	✓ Full exchange observed
09-09 18:19	80m	-5 / -	UN7LEW	- / -	5	Partial capture
09-09 18:18	80m	-2 / +7	SP1LIS	+6 / -	4	✓ Closing observed
09-09 18:14	80m	-5 / -18	F5RRS	-5 / +4	8	✓ Full exchange observed
09-09 18:13	80m	-4 / -	ON4NYO	- / -6	2	✓ Closing fragment
09-09 18:13	80m	-4 / -25	YT2ZE	-4 / -10	4	✓ Full exchange observed
09-09 18:10	80m	-4 / -	UN7LEW	- / -	2	Partial capture
09-09 18:09	80m	0 / -9	OE3ZIO	-2 / -6	4	✓ Full exchange observed
09-09 18:05	80m	-7 / -	IK2IPY	- / -	2	Partial capture
09-09 18:05	80m	-4 / -	F4FSY	-22 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
193215  -7 1372  OH3CD ES6RMR RR73
193345  -5  435  OH3CD DO4CNA -21 (x2)
193415  +3 2853  OH3CD DK2MAX JN58
193430 -13 1097  DO4CNA OH3CD R-09
193445  -4  435  OH3CD DO4CNA RR73
193445  +3 2853  OH3CD DK2MAX JN58
193545  -2 2506  OH3CD R1TAX -10
193615  +5 2852  OH3CD DK2MAX R-24 (x5)
194030  +3  341  OH3CD 5P1KZX -12 (x2)

40m

UTC    dB Audio  Message
180215  +1  402  OH3CD SV1DZB RR73
180230  -7 1096  SV1DZB OH3CD 73
180245 -14 2779  OH3CD LY7TI -11
180315  -4  969  OH3CD E77WM -06
180330  -5 1096  E77WM OH3CD KP11
180345  -2  969  OH3CD E77WM -08 (x2)
180630  -1 2854  S58Y OH3CD KP11 (x3)
180800  -9 2426  E77WM OH3CD R-09
180845  -8 2426  I0XNH OH3CD KP11
180900  -3 1172  OH3CD I0XNH -06 (x2)
181045  -9 2426  PD7FS OH3CD KP11

60m

UTC    dB Audio  Message
211900 -16 2310  VO1NC OH3CD R-10
172945 -13 1879  SM2OTU OH3CD KP11
173000 -16 2258  OH3CD SM2OTU +11
173015 -14 1878  SM2OTU OH3CD R+14
173030 -16 2259  OH3CD SM2OTU RR73
173100 -14 1782  OH3CD ON7GB JO21 (x3)
173215 -19 1878  ON7GB OH3CD RRR
173230 -12 1783  OH3CD ON7GB 73
173330  +9 1342  OH3CD OM5ZW -01 (x2)
173415 -21 1879  OM5ZW OH3CD 73
173530 -12  654  OH3CD OZ/DG4BRT -13
173545 -15 1878  OZ/DF4ZL OH3CD R+01

20m

UTC    dB Audio  Message
165915  -1  799  OH3CD F4JUG -16 (x7)
171630  +1  606  OH3CD M6WRB -11 (x6)
090130  +3 1397  OH3CD UT0EP -06 (x2)

10m

UTC    dB Audio  Message
173845  -4  556  OH3CD DH1KJ RR73

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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