7Z1BS — 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: Saudi Arabia Most frequent locator attributed to this token: LL46

Receiver-side FT8 activity involving 7Z1BS, decoded by SO8OO in southeastern Poland. 245 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-12.

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 245 FT8 messages attributed to 7Z1BS as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (78%), followed by 10 m (19%) and 40 m (2%). Most decodes (79%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

245

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 6 20m · 192 10m · 47

First attributed message: 2026-06-06
Last attributed message: 2026-09-12 08:33 UTC

Observed FT8 message patterns

Attributed sample: 245 messages
Active dates: 18 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -17 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 84, strong (≥ -8 dB) 129.

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 7Z1BS in decoded directed-looking exchanges:

DL1AAH · Fed. Rep. of Germany DL3LST · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany DN9BT · Fed. Rep. of Germany EU7A · Belarus F5OHS · France G3SED · England G8OO · England IU3WOH · Italy OK1TNM · Czech Republic SP4MPH · Poland UA3ATQ · European Russia

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 7Z1BS

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: LL46 · 92 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 3,489 km (approx.)
Last such locator decoded: 2026-09-12 08:17 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	7Z1BS S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-13 01:09	40m	- / -3	IZ2AMW	-12 / -	2	✓ Closing fragment
09-12 08:31	10m	-9 / -	DN9BT	- / -23	5	✓ Closing fragment
09-12 08:28	10m	-10 / -	IU3WOH	- / -6	2	✓ Closing fragment
09-12 08:27	10m	-9 / -	OK1TNM	- / -10	2	✓ Closing fragment
09-12 08:25	10m	-11 / -	SP4MPH	- / -4	2	✓ Closing fragment
09-12 08:18	10m	-10 / -	F5OHS	- / +1	2	✓ Closing fragment
09-12 08:16	10m	-9 / -	EU7A	- / -4	2	✓ Closing fragment
09-12 08:15	10m	-10 / -	DL3LST	- / -	2	✓ Closing fragment
09-05 23:31	40m	- / -	RZ4FWA	-8 / -	2	Partial capture
09-05 23:28	40m	-9 / -16	KB8U	-16 / -	4	✓ Closing observed
09-05 23:25	40m	-8 / -	D44TWO	- / -	2	Partial capture
09-05 11:34	10m	-8 / -	DL1AAH	- / -18	2	✓ Closing fragment
09-05 11:32	10m	-12 / -	UA3ATQ	- / -6	2	✓ Closing fragment
09-05 11:30	10m	-14 / -	DL9KM	- / -14	2	✓ Closing fragment
08-12 10:19	10m	- / -	RV6F	-22 / -	4	Partial capture
08-12 09:57	10m	- / -4	RG6S	-14 / -	4	Partial capture
08-06 19:04	20m	- / -	EC5M	-18 / -	3	Partial capture
08-06 19:03	20m	- / -	RZ4FWA	-10 / -	2	Partial capture
08-06 15:36	10m	- / -	G3SED	-14 / -	5	✓ Closing fragment
08-06 15:27	10m	- / -14	G8OO	-8 / -	3	✓ Closing fragment
07-25 01:32	20m	-9 / -	OK1UOZ	- / -26	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
232515 -10 2463  D44TWO 7Z1BS LL46 (x2)
232815  -8 2463  KB8U 7Z1BS LL46 (x2)
232930 -16 2676  7Z1BS KB8U -16
233015 -11 2463  KB8U 7Z1BS 73
233100  -9 2042  7Z1BS RZ4FWA LO23 (x2)
233215 -11 2463  <EY35D> 7Z1BS LL46
010915 -12 2213  7Z1BS IZ2AMW -03 (x2)

10m

UTC    dB Audio  Message
081800  -8 2515  F5OHS 7Z1BS +01 (x2)
082530 -12 2518  SP4MPH 7Z1BS R-04 (x2)
082700 -11 2518  OK1TNM 7Z1BS -10 (x2)
082800 -10 2517  IU3WOH 7Z1BS -06 (x2)
082900  -8 2517  OK1BN 7Z1BS -12
083000 -13 2518  UA3PY 7Z1BS -19
083100 -10 2517  DN9BT 7Z1BS -23 (x5)

20m

UTC    dB Audio  Message
013230 -11  623  OK1UOZ 7Z1BS -26 (x3)
190330 -12 2026  7Z1BS RZ4FWA LO23
190400 -17 1927  7Z1BS EC5M IM98
190430  -7 2026  7Z1BS RZ4FWA LO23
190430 -18 1927  7Z1BS EC5M IM98 (x2)
152930 -10  336  BV2NF 7Z1BS RR73
203545 -20 1327  OY5T 7Z1BS RR73
203600 -17 1676  7Z1BS EA3AAY JN11
182845 -10 1076  GM3AND 7Z1BS -11

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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