N3CB — 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: United States Most frequent locator attributed to this token: FN20

Receiver-side FT8 activity involving N3CB, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-09-23.

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 28 FT8 messages attributed to N3CB as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (75%), followed by 40 m (25%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 7 20m · 21

First attributed message: 2026-08-26
Last attributed message: 2026-09-23 01:06 UTC

Observed FT8 message patterns

Attributed sample: 28 messages
Active dates: 4 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -20 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 10.

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 N3CB in decoded directed-looking exchanges:

4X1UF · Israel 9K2YM · Kuwait HB9TIH · Switzerland IZ0GRR · Italy PA0ARR · Netherlands PA3FMK · Netherlands UT2PC · Ukraine AD9GE · United States N1NRA · United States W3L · United States

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 N3CB

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: FN20 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,111 km (approx.)
Last such locator decoded: 2026-09-23 01:00 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	N3CB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-23 01:06	40m	-14 / -	AD9GE	- / -13	2	✓ Closing fragment
09-23 01:03	40m	-18 / -3	W3L	-19 / -10	4	✓ Full exchange observed
09-23 01:00	40m	-18 / +8	N1NRA	-16 / +1	5	✓ Full exchange observed
08-27 22:34	20m	-8 / -	DL9KM	- / -10	2	Partial capture
08-27 22:30	20m	-11 / -	IZ0GRR	- / -1	3	✓ Closing fragment
08-27 22:29	20m	- / -13	HB9TIH	-6 / -	3	✓ Closing fragment
08-27 22:28	20m	- / -	DL5MKR	-14 / -	3	Partial capture
08-26 21:47	20m	-8 / -	UT2PC	- / -5	4	✓ Closing fragment
08-26 21:45	20m	-7 / +4	9K2YM	+9 / +6	6	✓ Full exchange observed
08-26 21:40	20m	- / -4	PA0ARR	-20 / -	2	✓ Closing fragment
08-26 21:39	20m	- / -	HB9JNM	+1 / -	6	Partial capture
08-26 21:39	20m	- / -	MI7RDK	+2 / -	2	Partial capture
08-26 21:38	20m	-5 / -5	S57BTI	-8 / -18	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
010045 -15 1691  N1NRA N3CB FN20
010100 -17 1690  N3CB N1NRA +08
010115 -20 1691  N1NRA N3CB R+01
010130 -14 1691  N3CB N1NRA RR73
010145 -20 1691  N1NRA N3CB 73
010315 -19 1813  N3CB W3L -03
010330 -20 1814  W3L N3CB R-10
010345 -19 1813  N3CB W3L RR73
010400 -15 1813  W3L N3CB 73
010600 -16 2018  AD9GE N3CB R-13 (x2)

20m

UTC    dB Audio  Message
222900 -10 1904  N3CB HB9TIH JN36
222900 -19 1627  N3CB DL5MKR JO60
222930  -7 1905  N3CB HB9TIH R-13 (x2)
223045 -10 2614  IZ0GRR N3CB RR73
223115 -14 2613  CQ N3CB FN20                          a1
223130  +4  678  N3CB F1PBZ -16
223145 -12 2612  IZ0GRR N3CB -01 (x2)
223415  -9 2610  DL9KM N3CB -10 (x2)
225600 -10 2553  4X1UF N3CB 73
230045  -9 2660  <...> N3CB FN20 (x2)
230545 -11 2659  EA3SD N3CB FN20

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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