ZL1RPC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: New Zealand Most frequent locator attributed to this token: RF73

Receiver-side FT8 activity involving ZL1RPC, decoded by SO8OO in southeastern Poland. 206 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-21 and 2026-08-28.

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 206 FT8 messages attributed to ZL1RPC 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 (100%). 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 -11.2 dB.

Overview

206

Messages attributed

UTC dates decoded

Active 15-min windows

-11.2 dB

Estimated median S/N

Bands

20m · 206

First attributed message: 2026-08-21
Last attributed message: 2026-08-28 04:28 UTC

Observed FT8 message patterns

Attributed sample: 206 messages
Active dates: 4 UTC dates
Estimated median S/N: -11.2 dB
Estimated 10th-90th percentile: -20 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 87, strong (≥ -8 dB) 67.

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 ZL1RPC in decoded directed-looking exchanges:

4X1UF · Israel ×2 OE3KLU · Austria ×2 RA6MQ · European Russia ×2 UB8CPH · Asiatic Russia ×2 S57WO · Slovenia ×2 SV5BYP · Dodecanese ×2 CR7BRV · Portugal ×2 EA1R · Spain G4MQL · England LZ2VQ · Bulgaria UD8S · Asiatic Russia R6ZQ · 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 ZL1RPC

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: RF73 · 121 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 17,402 km (approx.)
Last such locator decoded: 2026-08-26 05:50 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	ZL1RPC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-11 17:28	80m	- / -2	DJ7M	+19 / -	3	✓ Closing fragment
09-03 05:06	40m	- / -12	IZ7DOK	-8 / -	3	Partial capture
08-30 05:33	40m	- / -19	IR7MGGC	-15 / -	3	Partial capture
08-28 04:27	20m	-3 / -	<...>	- / -	3	Partial capture
08-26 17:14	40m	- / -23	SP3SLA	+12 / -	2	✓ Closing fragment
08-26 14:35	40m	- / -24	R4HNW	-9 / -	3	Partial capture
08-26 14:34	40m	- / -26	UA3D	+6 / -	8	Partial capture
08-26 07:13	20m	- / -13	5P1KZX	-10 / -	2	✓ Closing fragment
08-26 07:03	20m	- / -	ON6DO	-6 / -	3	Partial capture
08-26 07:03	20m	- / -20	SV1PLR	-2 / -	3	✓ Closing fragment
08-26 06:50	20m	- / -1	UT5ZC	+15 / -	2	Partial capture
08-26 06:46	20m	- / -	CT1FIU	-4 / -	2	Partial capture
08-26 05:58	20m	-19 / -8	EA4D	-2 / -9	5	✓ Full exchange observed
08-26 05:50	20m	-12 / -	IV3HAX	- / -13	2	Partial capture
08-26 05:49	20m	-18 / -	OM8JP	- / -	2	Partial capture
08-26 05:40	20m	-14 / -	DL7FD	- / -	2	Partial capture
08-26 05:36	20m	- / -	F4JQH	0 / -	4	Partial capture
08-26 05:31	20m	- / -14	I8EJC	-16 / -	4	Partial capture
08-26 05:23	20m	-16 / -	II7MGBT	- / -9	2	Partial capture
08-26 05:18	20m	-7 / -	HB9FNO	- / -2	9	Partial capture
08-26 05:16	20m	-5 / -	KE7KE	- / -	3	Partial capture
08-26 05:15	20m	-10 / -	DG0JK	- / -11	2	✓ Closing fragment
08-26 05:15	20m	- / -11	F5CKQ	-4 / -	6	Partial capture
08-26 05:14	20m	-8 / -	9A2TN	- / -11	3	✓ Closing fragment
08-26 05:06	20m	-2 / -	IU5LQC	- / -11	4	✓ Closing fragment
08-26 05:06	20m	-4 / -18	UB4CJS	-1 / -13	15	Partial capture
08-26 05:04	20m	-10 / -	II7MGMU	- / -8	2	Partial capture
08-26 05:02	20m	-12 / -	RW9WC	- / -6	2	✓ Closing fragment
08-26 04:59	20m	-12 / -	IZ7RJT	- / -12	2	Partial capture
08-26 04:57	20m	-8 / -	ZL1CE	- / -	3	Partial capture
08-26 04:56	20m	-9 / -	UW5KW	- / -18	3	✓ Closing fragment
08-26 04:53	20m	-11 / -	HF5A	- / -9	2	✓ Closing fragment
08-26 04:52	20m	-12 / -	SV8JVM	- / -	3	Partial capture
08-26 04:50	20m	-18 / -14	RU6FS	+3 / -	4	✓ Closing observed
08-26 04:48	20m	-14 / -	DK4OX	- / -	3	Partial capture
08-26 04:41	20m	-6 / -	RK3DSW	- / -	2	Partial capture
08-26 04:39	20m	-3 / -	OH1MRE	- / -6	3	Partial capture
08-26 04:38	20m	-4 / -	KT8Q	- / -	3	Partial capture
08-26 04:36	20m	-13 / -	LY1NM	- / -	3	Partial capture
08-26 04:35	20m	-2 / -	HF8E	- / -11	2	✓ Closing fragment
08-26 04:34	20m	-1 / -	SP1ZS	- / -11	3	✓ Closing fragment
08-26 04:31	20m	-8 / -	YO5MOA	- / -13	4	✓ Closing fragment
08-26 04:29	20m	- / -18	UD8S	-10 / -	2	✓ Closing fragment
08-26 04:26	20m	-6 / -	DH2RL	- / -15	2	✓ Closing fragment
08-26 04:24	20m	-7 / -	VE7SA	- / -	3	Partial capture
08-26 04:22	20m	- / -	UA9WV	-11 / -	5	Partial capture
08-26 04:15	20m	-18 / -20	RU4B	-8 / -15	6	✓ Full exchange observed
08-26 04:13	20m	-5 / -14	R6LKG	+14 / -15	5	✓ Full exchange observed
08-26 04:04	20m	-9 / -	RN3DKT	- / -13	2	✓ Closing fragment
08-26 04:02	20m	-6 / -	F4VTR	- / -14	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
155500  +0 1597  ZL1RPC UT5ZC -17 (x2)
163630 -10  896  ZL1RPC RD9D LO99 (x3)
172830 +18  442  ZL1RPC DJ7M JN49 (x3)

40m

UTC    dB Audio  Message
143615  +4 2744  ZL1RPC UA3D KO95 (x5)
145145 -19 2276  ZL1RPC R4DV LO21
171415 +10 2248  ZL1RPC SP3SLA -23 (x2)
053345 -16 1721  ZL1RPC IR7MGGC R-19 (x3)
050600 -12  894  ZL1RPC II7MGBR -15
050600  -6  806  ZL1RPC IZ7DOK -12 (x3)

20m

UTC    dB Audio  Message
065030 +13  689  ZL1RPC UT5ZC -14
070300  -1 2742  ZL1RPC SV1PLR -20
070300  -5 1766  ZL1RPC ON6DO JN29
070330 -13 1280  ZL1RPC CT1FIU IN50
070330  -1 2742  ZL1RPC SV1PLR -20
070330  -3 1766  ZL1RPC ON6DO JN29 (x2)
070400  -3 2742  ZL1RPC SV1PLR RR73
071300  -9 2888  ZL1RPC 5P1KZX -13 (x2)
074800 -19  612  ZL1RPC MI0NWA IO64
012230 -12 2593  ZL1RPC <...> -05
042715  -4 2954  <...> ZL1RPC (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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