N9ZJ — 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: FN64

Receiver-side FT8 activity involving N9ZJ, decoded by SO8OO in southeastern Poland. 59 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-17.

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 59 FT8 messages attributed to N9ZJ as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (90%), followed by 40 m (8%) and 10 m (2%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (71%); the estimated median was -18 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

80m · 53 40m · 5 10m · 1

First attributed message: 2026-06-12
Last attributed message: 2026-10-17 12:46 UTC

Observed FT8 message patterns

Attributed sample: 59 messages
Active dates: 8 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -24 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 42, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 0.

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 N9ZJ in decoded directed-looking exchanges:

DN9SGE · Fed. Rep. of Germany EA5AMI · Spain DL1RWN · Fed. Rep. of Germany AA3B · United States UR1CCT · Ukraine D2UY · Angola K4MWB · United States KB2M · United States KZ4ZZ · United States N1SK · United States SM1ALH · Sweden SP1MGM · Poland

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 N9ZJ

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: FN64 · 32 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,327 km (approx.)
Last such locator decoded: 2026-10-17 12:46 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	N9ZJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 13:04	10m	- / -14	DN9SGE	-15 / -	7	✓ Closing fragment
11-04 12:58	10m	- / -9	DO1ID	-12 / -	2	Partial capture
11-04 01:48	80m	- / -14	KZ4ZZ	-18 / -	3	✓ Closing fragment
10-31 12:31	10m	- / -11	EA5AMI	-8 / -	2	✓ Closing fragment
10-22 00:42	40m	- / +9	AA3B	-7 / -	2	✓ Closing fragment
09-29 00:48	80m	-23 / -	W1EQ	-20 / -	2	✓ Closing observed
09-29 00:45	80m	- / -19	SP1MGM	+12 / -	3	✓ Closing fragment
08-16 01:26	160m	- / -18	DL1RWN	+8 / -	2	✓ Closing fragment
08-13 00:42	80m	- / -1	N1SK	-12 / -	2	✓ Closing fragment
08-13 00:37	80m	-17 / -6	K4MWB	-4 / -	3	✓ Closing observed
08-13 00:35	80m	-22 / -	W8WEJ	- / -	2	✓ Closing fragment
08-13 00:32	80m	-21 / -2	KB2M	-17 / +5	6	✓ Full exchange observed
08-10 00:06	40m	- / -16	UR1CCT	+12 / -	3	✓ Closing fragment
08-10 00:02	40m	- / -17	R2EA	-10 / -	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
124630 -18 1103  S79VU N9ZJ FN64
123130  -8 1087  N9ZJ EA5AMI -11 (x2)
125800 -12  309  N9ZJ DO1ID -09 (x2)
130400 -16 2015  N9ZJ DN9SGE JO42 (x7)

80m

UTC    dB Audio  Message
011600 -23 1167  N9ZJ D2UY RR73
235615 -21 1568  PY5/PY2TIM N9ZJ FN64
235700 -21 1128  PT2ND N9ZJ FN64
004415 -18  951  N1IWP N9ZJ FN64
004530  +9  952  N9ZJ SP1MGM JO73 (x3)
004815 -20 1913  N9ZJ W1EQ +12
004900 -23  701  W1EQ N9ZJ 73
005230 -23  835  K9AV N9ZJ -11
005600  +6 2029  N9ZJ SM1ALH RR73
014830 -20 1532  N9ZJ KZ4ZZ -14 (x3)
015530 -15 2270  N9ZJ W1AW/4 -05

40m

UTC    dB Audio  Message
000200  -9  665  N9ZJ R2EA -17 (x2)
000615 +10  465  N9ZJ UR1CCT KN69 (x3)
005515 -22 1404  N3BBJ N9ZJ FN64
003630  +7  700  N9ZJ P4/WE9V -03
004215  -9 2734  N9ZJ AA3B +09 (x2)

160m

UTC    dB Audio  Message
012645  +7 2308  N9ZJ DL1RWN -18 (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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