PY1ZRJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Brazil Most frequent locator attributed to this token: GG87

Receiver-side FT8 activity involving PY1ZRJ, decoded by SO8OO in southeastern Poland. 51 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-31.

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 51 FT8 messages attributed to PY1ZRJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (84%), followed by 20 m (16%). Several six-hour UTC windows tied for the largest share (84%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

20m · 8 10m · 43

First attributed message: 2026-06-07
Last attributed message: 2026-08-31 20:22 UTC

Observed FT8 message patterns

Attributed sample: 51 messages
Active dates: 4 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -22 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 25, strong (≥ -8 dB) 14.

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 PY1ZRJ in decoded directed-looking exchanges:

HA7TM · Hungary ×2 IK2VFR · Italy LA6YEA · Norway II7WWA · Italy IW4CFN · Italy PD0OTH · Netherlands PI4DX · Netherlands RM8L · Asiatic Russia DK2CC · Fed. Rep. of Germany EA6NB · Balearic Islands F4ENK · France OJ0JR · Market Reef

Most frequent locator attributed to PY1ZRJ

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: GG87 · 35 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 10,260 km (approx.)
Last such locator decoded: 2026-08-31 20:22 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	PY1ZRJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 22:54	60m	- / -	G4ZFJ	+14 / -	2	Partial capture
09-20 05:37	60m	- / -	DH1BBO	-8 / -	10	Partial capture
09-20 05:36	60m	- / -	ON6MVR	-10 / -	2	Partial capture
09-20 05:36	60m	- / -	M0UTD	-4 / -	2	Partial capture
09-20 05:35	60m	- / -	DH9DR	0 / -	11	Partial capture
09-12 03:15	60m	- / -	GW4FRX	+8 / -	3	Partial capture
09-12 03:02	60m	- / -13	PA4PA	+4 / -	4	✓ Closing fragment
09-05 03:48	60m	- / -20	EA6NB	0 / -	2	✓ Closing fragment
09-03 02:02	60m	- / -	ON8BB	+4 / -	3	Partial capture
09-03 02:01	60m	- / -13	HA7TM	+9 / -	2	✓ Closing fragment
09-03 01:49	60m	- / -	ON8BB	+1 / -	3	Partial capture
09-03 01:42	60m	- / -	M0LOW	-4 / -	2	Partial capture
09-03 01:39	60m	- / -	ON8BB	+1 / -	9	Partial capture
09-01 03:32	60m	- / -	ON8BB	-1 / -	3	Partial capture
08-29 21:41	60m	- / -19	SP5ES	-12 / -	5	Partial capture
08-29 21:41	60m	- / +5	PE1MHY	-4 / -	6	Partial capture
08-29 21:39	60m	- / -	F5MYK	0 / -	2	Partial capture
08-29 21:38	60m	- / -	DH1BBO	-15 / -	26	Partial capture
08-29 03:03	60m	- / -	DM5KM	+6 / -	3	Partial capture
08-29 03:02	60m	- / -	GW4FRX	-4 / -	3	Partial capture
08-27 01:29	60m	- / -	F8NHF	+1 / -	4	Partial capture
08-23 22:33	20m	-10 / -	BV2NF	- / -	3	Partial capture
08-23 22:29	20m	-7 / -	M0LAD	- / -12	3	Partial capture
08-19 23:07	60m	- / -	OE3OOG	-1 / -	3	Partial capture
08-19 23:05	60m	- / -	PA4PA	-1 / -	6	Partial capture
08-19 23:01	60m	- / -	OE3OOG	-1 / -	4	Partial capture
08-19 23:00	60m	- / -20	HA0AA	-8 / -	3	Partial capture
08-19 22:54	60m	- / -	F5PBG	-6 / -	4	Partial capture
08-19 22:54	60m	- / -22	S57MPU	+3 / -	26	✓ Closing fragment
08-19 22:53	60m	- / -13	HA7TM	+6 / -	2	✓ Closing fragment
08-19 22:48	60m	- / +2	VE1YX	-17 / -	3	✓ Closing fragment
08-19 22:44	60m	- / -7	ON6ZK	-5 / -	15	Partial capture
08-19 22:44	60m	- / -15	OJ0JR	0 / -	2	✓ Closing fragment
08-19 22:43	60m	- / -23	DK2CC	-13 / -	9	✓ Closing fragment
08-19 22:43	60m	- / -14	DF2NV	-1 / -	2	Partial capture
08-19 22:42	60m	- / -11	F4ENK	-10 / -	4	✓ Closing fragment
08-19 22:42	60m	- / -	ON7KEI	-22 / -	3	Partial capture
08-19 22:41	60m	- / -	ON6ZK	-9 / -	3	Partial capture
08-19 22:40	60m	- / -	F5PBG	-7 / -	10	Partial capture
08-17 21:47	20m	- / +4	PD0OTH	-12 / -	3	✓ Closing fragment
08-14 19:08	20m	- / -14	IW4CFN	-10 / -	2	✓ Closing fragment
08-09 17:57	20m	- / -	IK4LZH	-3 / -	4	Partial capture
08-09 17:54	20m	- / -	PI4DX	-8 / -	2	✓ Closing fragment
08-05 04:11	60m	- / -	HB9ALO	-9 / -	3	Partial capture
08-05 04:07	60m	- / -	HB9ALO	-8 / -	2	Partial capture
07-31 22:04	20m	- / -	M0SLI	+1 / -	3	Partial capture
07-31 21:42	20m	- / -20	EA3GXK	-11 / -	3	Partial capture
07-29 14:06	10m	- / -11	F1PBZ	+4 / -	2	Partial capture
07-28 21:38	20m	- / -	M0KZC/P	0 / -	2	Partial capture
07-28 21:38	20m	- / -	G6BCC	-8 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
053815  -9  753  PY1ZRJ DH1BBO JO42
053845  -3 1025  PY1ZRJ DH9DR JO31
053845 -10  753  PY1ZRJ DH1BBO JO42
053915  +0 1025  PY1ZRJ DH9DR JO31
053915 -12  753  PY1ZRJ DH1BBO JO42
053945  +2 1025  PY1ZRJ DH9DR JO31
053945  -4  753  PY1ZRJ DH1BBO JO42
054015  +1 1026  PY1ZRJ DH9DR JO31
054015 -10  752  PY1ZRJ DH1BBO JO42
054045  +1 1025  PY1ZRJ DH9DR JO31
054045  -8  752  PY1ZRJ DH1BBO JO42 (x3)
225445 +14  289  PY1ZRJ G4ZFJ JO01 (x2)

20m

UTC    dB Audio  Message
230745 -22 1808  PY1ZRJ N1FST -23
190815 -11 1789  PY1ZRJ IW4CFN -14 (x2)
185245  -5  253  PY1ZRJ <...> R-13
214730 -13 1681  PY1ZRJ PD0OTH JO21 (x3)
222900  -6  449  M0LAD PY1ZRJ GG87 (x3)
223330 -11  447  BV2NF PY1ZRJ GG87 (x3)
224000  -5  452  G8KHF PY1ZRJ GG87
202245 -10  515  LY2TS PY1ZRJ GG87

10m

UTC    dB Audio  Message
171300  +4  363  PY1ZRJ LA6YEA RR73
171330 -22 2155  PY1ZRJ RM8L MO27
173330  +6 1419  PY1ZRJ RW3QW -19 (x2)
175315  -3  425  PY1ZRJ RV3RX LO02 (x2)
182615 -16 1791  PY1ZRJ PA5KK JO22 (x2)
185415  -4 2762  PY1ZRJ TM2WWA +01
190715 -11 2488  PY1ZRJ F1PBZ -12
202045 -16 1374  PY1ZRJ IK2VFR -15 (x2)
135145 -12  295  PY1ZRJ F4ETS JN25
140615  +4 2780  PY1ZRJ F1PBZ -11 (x2)

40m

UTC    dB Audio  Message
234630 -14 1030  PY1ZRJ RR73; PY5JO <...> -16
002400 -13  257  PY1ZRJ F1IQH JN27 (x3)
215845 -17 2082  PY1ZRJ IQ4JO JN63 (x3)

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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