DH5NC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN49

Receiver-side FT8 activity involving DH5NC, decoded by SO8OO in southeastern Poland. 2,421 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 89 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-21.

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 2,421 FT8 messages attributed to DH5NC as the transmitting token by decoded message structure across 89 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (46%), followed by 20 m (36%) and 80 m (13%). Most decodes (72%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.6 dB.

Overview

2,421

Messages attributed

UTC dates decoded

365

Active 15-min windows

-7.6 dB

Estimated median S/N

Bands

80m · 320 60m · 87 40m · 1,124 20m · 862 10m · 28

First attributed message: 2026-06-07
Last attributed message: 2026-09-21 06:59 UTC

Observed FT8 message patterns

Attributed sample: 2,421 messages
Active dates: 89 UTC dates
Estimated median S/N: -7.6 dB
Estimated 10th-90th percentile: -17.9 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 381, moderate (-15 to -9 dB) 724, strong (≥ -8 dB) 1,316.

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 DH5NC in decoded directed-looking exchanges:

F1UNR · France ×5 DL9KM · Fed. Rep. of Germany ×3 DL6NDN · Fed. Rep. of Germany ×3 F5LMJ · France ×3 E70SZ · Bosnia-Herzegovina ×2 IU1HGN · Italy ×2 M9NTS · England ×2 OZ7DR · Denmark ×2 TA1XO · European Turkey ×2 GB0SL · England ×2 KB3Z · United States ×2 9A7BB · Croatia ×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 DH5NC

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: JN49 · 1,578 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 920 km (approx.)
Last such locator decoded: 2026-09-21 06:53 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	DH5NC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 11:51	10m	- / -22	HZ1TT	-18 / -	2	✓ Closing fragment
09-21 06:50	80m	-8 / -	DO8JB	- / -	3	Partial capture
09-21 06:46	80m	-16 / -	DO2KTE	-19 / -4	3	✓ Closing observed
09-21 06:36	40m	- / -15	G0CPA	-24 / -	2	Partial capture
09-20 06:23	40m	+8 / -3	YO2UKG	-4 / -2	5	✓ Full exchange observed
09-20 06:15	40m	-4 / -	WA4FU	- / -	2	Partial capture
09-20 06:08	40m	-5 / -	ON3RT	- / -5	2	✓ Closing fragment
09-20 06:05	40m	0 / -	AD9GE	- / -23	3	✓ Closing fragment
09-20 06:01	40m	+8 / -	N1IWP	- / -	6	Partial capture
09-19 06:16	40m	-4 / -4	YU65AEC	+2 / -	2	Partial capture
09-19 06:09	40m	+7 / -	KR4LQH	- / -19	2	Partial capture
09-19 06:02	40m	+1 / -	ND9M	- / -20	7	✓ Closing fragment
09-18 08:28	40m	-14 / -	F1UNR	- / -8	7	✓ Closing fragment
09-18 08:21	40m	-2 / -	N3VA	- / -	4	Partial capture
09-18 08:18	40m	-13 / -	M5AFO	- / -21	4	✓ Closing fragment
09-18 08:17	40m	-14 / -	ON8WR	- / -5	2	Partial capture
09-18 08:15	40m	-14 / -	GX3RAF/P	- / +3	2	✓ Closing fragment
09-18 06:27	40m	-3 / -	CT4VB	- / -10	3	✓ Closing fragment
09-18 06:25	40m	-5 / -	IU1HGN	- / -15	2	✓ Closing fragment
09-18 06:18	40m	-10 / -	KF5VDX	- / -12	4	✓ Closing fragment
09-17 17:54	40m	0 / -	M1DBW	- / -11	2	Partial capture
09-17 05:57	40m	-5 / -	EA2EDI	- / -12	2	✓ Closing fragment
09-17 05:54	40m	-3 / -	EA2DLX	- / -16	3	✓ Closing fragment
09-17 05:52	40m	0 / -	WA2HIP	- / -	2	Partial capture
09-17 05:50	40m	+2 / -	WA3THL	- / -	2	Partial capture
09-16 06:34	40m	-8 / -	KB3Z	- / -	6	Partial capture
09-16 06:17	40m	-1 / -	WD4OBP	- / -12	3	✓ Closing fragment
09-16 06:07	40m	0 / -	WD4OBP	- / -	4	Partial capture
09-16 05:59	40m	-4 / -	SP9RA	- / -8	5	✓ Closing fragment
09-15 06:16	40m	-12 / -	9Y4DG	- / -22	2	✓ Closing fragment
09-15 06:07	40m	0 / -	KF0GE	- / -11	4	✓ Closing fragment
09-15 05:55	40m	-11 / -	KE9END	- / -20	5	✓ Closing fragment
09-11 08:55	40m	-18 / -9	S53AK	+1 / -	4	✓ Closing observed
09-11 08:37	40m	-21 / -11	SP7VCL	-12 / -	3	✓ Closing observed
09-11 06:55	40m	- / +2	IS0/IK2YCW	-11 / -	3	Partial capture
09-11 06:26	60m	-22 / -	IK3HTH	- / -10	2	✓ Closing fragment
09-11 06:19	60m	-21 / -	DL4YDR	-21 / -6	4	✓ Full exchange observed
09-11 06:13	60m	-20 / -	EA3BMU	- / -	2	✓ Closing fragment
09-11 06:09	60m	-14 / -	IK4POB	- / -18	2	Partial capture
09-11 06:05	80m	-6 / -	F5LMJ	- / -9	2	✓ Closing fragment
09-11 05:56	80m	+3 / -	II4PAGE	- / +1	2	Partial capture
09-11 05:51	80m	-8 / -	F4ILK	- / -	6	Partial capture
09-11 05:49	80m	-7 / -	HA3TBL	-1 / -11	4	✓ Closing observed
09-10 17:11	80m	-14 / -	SM7HWD	- / -16	2	✓ Closing fragment
09-10 17:06	60m	-4 / +8	DG4BZ	-2 / -	3	✓ Closing observed
09-10 17:03	40m	-4 / -	UG4P	- / -16	3	✓ Closing fragment
09-10 17:00	40m	-6 / -15	UA3PTY	0 / -	4	✓ Closing observed
09-10 16:56	40m	0 / -	I2SIP	- / -23	4	✓ Closing fragment
09-10 06:55	40m	- / -	SV1TRJ	-21 / -	3	Partial capture
09-10 06:37	40m	-2 / -	KE9END	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
153815 -11  803  R50RKZ DH5NC JN49
153830  -7  803  DH5NC R50RKZ -05
153845  -7  803  R50RKZ DH5NC R-02
153900  -7  803  DH5NC R50RKZ RR73
153915 -10  803  R50RKZ DH5NC 73
154245 -11 1153  R3IAD DH5NC JN49 (x2)
113715 -11 1756  DH5NC LZ2VQ -05 (x2)
075815  -4  983  DH5NC SV1CQN +00 (x2)
172200 -15 1311  LY2BBF DH5NC JN49
172515 -19 2005  LZ1ON DH5NC JN49
115145 -17 1752  DH5NC HZ1TT -22 (x2)

60m

UTC    dB Audio  Message
061745 -23 1790  CQ DH5NC JN49                         a1 (x2)
061900 -21 2115  DH5NC DL4YDR JO32
061915 -21 2115  DL4YDR DH5NC -06
061930 -20 2115  DH5NC DL4YDR R+13 (x2)
062545 -24 1782  CQ DH5NC JN49
062645 -23 1783  IK3HTH DH5NC -10 (x2)
161915 -21 1996  ON6AA DH5NC JN49
065300 -13  808  CQ DH5NC JN49 (x2)
065345  -4  808  DH5NC SP3WVL JO72
065930 -14  945  F5LMJ DH5NC RR73
070200  -6 2481  DH5NC DH1PS RRR

80m

UTC    dB Audio  Message
060545  -6  503  F5LMJ DH5NC RR73
063030 -20 1702  CQ DH5NC JN49 (x5)
064630 -14 2054  DO2KTE DH5NC R-04
064645 -19 2053  DH5NC DO2KTE 73
064700 -17 2053  DO2KTE DH5NC 73
064730 -17 2054  CQ DH5NC JN49 (x3)
065030  -7  845  DO8JB DH5NC JN49 (x3)

40m

UTC    dB Audio  Message
062345  +9  617  YO2UKG DH5NC JN49
062400  -5  616  DH5NC YO2UKG -03
062415  +6  617  YO2UKG DH5NC R-02
062430  -4  616  DH5NC YO2UKG RR73
062445  +8  617  YO2UKG DH5NC 73
062630  +6  359  LA3LUA DH5NC JN49
064045  +0  438  CQ NA DH5NC JN49 (x7)
063630 -24 1974  DH5NC G0CPA -15 (x2)

20m

UTC    dB Audio  Message
155500  -9 1897  KS1WK DH5NC JN49
073315  +5  723  IZ8EYN DH5NC JN49 (x3)
073430  -5 1032  DH5NC IZ8EYN RR73
073445  -1  723  IZ8EYN DH5NC 73
073615  -1  907  TI5RR DH5NC JN49 (x2)
074000  -1 1951  <...> DH5NC JN49
094430 +11 1953  DH5NC LZ1RAY -09 (x2)
094615  -4 2375  CQ DH5NC JN49 (x2)
160315 -16 1611  EA7DJN DH5NC JN49
161115  -9  905  W8DOD DH5NC JN49

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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