DF8RJ — 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: Fed. Rep. of Germany Most frequent locator attributed to this token: JO42

Receiver-side FT8 activity involving DF8RJ, decoded by SO8OO in southeastern Poland. 221 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-21.

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 221 FT8 messages attributed to DF8RJ as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (90%), followed by 20 m (9%) and 40 m (1%). Most decodes (89%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (62%); the estimated median was -11 dB.

Overview

221

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

60m · 199 40m · 3 20m · 19

First attributed message: 2026-06-09
Last attributed message: 2026-10-21 15:36 UTC

Observed FT8 message patterns

Attributed sample: 221 messages
Active dates: 8 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -16 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 136, strong (≥ -8 dB) 61.

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 DF8RJ in decoded directed-looking exchanges:

EA5IT · Spain ×2 F1TYP · France ×2 DL2ROD · Fed. Rep. of Germany HA1BF · Hungary PA7ZZ · Netherlands DB5HA · Fed. Rep. of Germany DC5IU · Fed. Rep. of Germany DF2NV · Fed. Rep. of Germany DG3TF · Fed. Rep. of Germany DH5KLI · Fed. Rep. of Germany DK9PH · Fed. Rep. of Germany DL1KYF · Fed. Rep. of Germany

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 DF8RJ

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: JO42 · 128 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 934 km (approx.)
Last such locator decoded: 2026-10-21 15:33 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	DF8RJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 15:35	60m	-15 / 0	ES2IPA	-3 / -4	5	✓ Full exchange observed
10-21 15:29	60m	-14 / -	SP2JEL	-10 / -3	5	✓ Closing observed
10-21 15:27	60m	-13 / -	G8YPE	- / +3	3	✓ Closing fragment
10-21 15:25	60m	-14 / -11	YO2UKG	+2 / +3	5	✓ Full exchange observed
10-09 14:58	60m	-5 / -	F1OGW	- / -6	4	✓ Closing fragment
10-08 16:23	60m	-12 / -7	IK1WGX	-11 / +3	5	✓ Full exchange observed
10-08 16:22	60m	-12 / -	GE3TXA	- / -3	2	✓ Closing fragment
10-08 16:17	60m	-11 / -7	S52R	+1 / +3	5	✓ Full exchange observed
10-08 16:13	60m	-6 / -	LA2GCA	-15 / -	2	✓ Closing observed
10-08 16:10	60m	- / -2	DF2NV	+10 / -	3	✓ Closing fragment
10-08 16:08	60m	-6 / -	DL4YDR	-14 / -	4	✓ Full exchange observed
10-08 14:40	60m	-6 / -9	PE3T	-6 / -	5	✓ Full exchange observed
10-08 14:32	60m	-10 / +2	OZ9FF	-10 / -	3	✓ Closing observed
10-08 14:29	60m	-10 / -5	F1TYP	-16 / -	4	✓ Full exchange observed
10-08 14:23	40m	- / -	DL6REX	-9 / -	2	Partial capture
10-02 11:59	40m	- / -23	HA1BF	-3 / -	2	✓ Closing fragment
10-02 11:55	40m	- / -	DJ9MA	-23 / -	2	Partial capture
10-01 14:06	60m	-7 / +3	HB9PLH	-14 / -1	7	✓ Full exchange observed
09-27 06:17	60m	-12 / -	EA1AUM	- / -7	2	✓ Closing fragment
09-27 06:15	60m	-13 / -11	DL1MST	-10 / -	3	✓ Closing observed
09-26 19:27	60m	-4 / +2	DK9PH	+6 / -6	3	✓ Full exchange observed
09-26 19:24	60m	-8 / -	DL2OAM	- / -18	2	✓ Closing fragment
09-26 19:20	60m	-1 / +6	DL8UD	-3 / +4	4	✓ Full exchange observed
09-26 19:17	60m	-6 / -7	IZ3VCN	-1 / -9	4	✓ Full exchange observed
09-26 19:15	60m	- / -5	DL9YBH	-9 / -	4	✓ Closing fragment
09-26 19:04	60m	-12 / -	TA3GO	- / +4	3	Partial capture
09-26 18:55	60m	-13 / 0	DL1KYF	+2 / -	4	✓ Closing observed
09-26 18:48	60m	-12 / -1	PE1MHY	-2 / +1	4	✓ Full exchange observed
09-26 18:41	60m	-12 / +1	IK2VFR/P	-4 / +2	5	✓ Full exchange observed
09-26 18:36	60m	-3 / +1	DH5KLI	-9 / -15	7	✓ Full exchange observed
09-26 18:28	60m	-11 / -	DB5HA	- / -4	2	✓ Closing fragment
09-26 18:26	60m	-12 / -	OH6OK	-1 / -2	5	✓ Full exchange observed
09-26 18:07	60m	- / -	SP8AJK	+7 / -	3	Partial capture
09-26 17:59	60m	-14 / -	EA5IT	- / -10	21	✓ Closing fragment
09-26 17:55	60m	-12 / -6	DG3TF	-10 / +3	5	✓ Full exchange observed
09-26 17:42	60m	-10 / -3	DL5ZG	-11 / -	3	✓ Closing observed
08-19 11:45	40m	- / -14	DL2ROD	-18 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
152930 -14 1357  CQ DF8RJ JO42
152945  -8  895  DF8RJ SP2JEL JO93
153000 -10 1357  CQ DF8RJ JO42
153015 -11  895  DF8RJ SP2JEL JO93
153030 -12 1357  SP2JEL DF8RJ -03 (x2)
153115 -10  894  DF8RJ SP2JEL 73
153200 -13 1357  CQ DF8RJ JO42 (x3)
153545 -14 1357  ES2IPA DF8RJ -04 (x2)
153630  -5 2384  DF8RJ ES2IPA R+00
153645 -18 1357  ES2IPA DF8RJ RR73
153700  -1 2384  DF8RJ ES2IPA 73

40m

UTC    dB Audio  Message
114530 -18 1118  DF8RJ DL2ROD JO62 (x3)
112800 -19  893  DF8RJ DG5PW JO30
115215 -18 2230  DF8RJ PA7ZZ RR73
115515 -22 1538  DF8RJ DJ9MA JN49 (x2)
115900  -7 1401  DF8RJ HA1BF -23 (x2)
142245 -24 1538  CQ DF8RJ JO42                         a1 (x2)
142330 -10 1877  DF8RJ DL6REX JO40 (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

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