HB9RYZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN47

Receiver-side FT8 activity involving HB9RYZ, decoded by SO8OO in southeastern Poland. 231 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-21 and 2026-09-06.

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 231 FT8 messages attributed to HB9RYZ as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (64%), followed by 40 m (12%) and 160 m (12%). Most decodes (80%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was -3 dB.

Overview

231

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

160m · 27 80m · 148 40m · 28 20m · 21 10m · 7

First attributed message: 2026-06-21
Last attributed message: 2026-09-06 01:22 UTC

Observed FT8 message patterns

Attributed sample: 231 messages
Active dates: 9 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -12 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 46, strong (≥ -8 dB) 178.

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 HB9RYZ in decoded directed-looking exchanges:

RI1FJL · Franz Josef Land ×2 5A1AL · Libya BA4UFM · China BA4VE · China BG3NQT · China HP1RY · Panama V31DL · Belize DJ2MS · Fed. Rep. of Germany JH4HMG · Japan M1EZU · England OS4K · Belgium PD0IFI · Netherlands

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 HB9RYZ

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: JN47 · 175 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 975 km (approx.)
Last such locator decoded: 2026-09-06 01:21 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	HB9RYZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 01:22	80m	- / -	UA4FKT	+15 / -	3	Partial capture
09-06 01:14	80m	+5 / -	PY6HD	-24 / -13	3	✓ Closing observed
09-06 01:13	80m	+8 / -	VP8A	-9 / -10	18	✓ Closing observed
09-06 01:11	160m	-1 / -	CE8WBJ	- / -	3	Partial capture
09-06 01:07	80m	+2 / -	VP8A	- / -	5	Partial capture
08-29 23:59	160m	- / -	R8LCA	-10 / -	5	Partial capture
08-29 23:54	160m	-9 / -	RI1FJL	- / -26	6	✓ Closing fragment
08-29 22:08	160m	-5 / -	RI1FJL	- / -	18	Partial capture
08-27 21:02	80m	+2 / +2	UA4FKT	+10 / 0	8	✓ Full exchange observed
08-27 20:53	80m	+4 / -	RI1FJL	- / -16	13	✓ Closing fragment
08-27 20:42	80m	+8 / -	RI1FJL	- / -	15	Partial capture
08-27 20:26	80m	-12 / -	RI1FJL	- / -	6	Partial capture
08-27 20:01	80m	-9 / -	RI1FJL	- / -	5	Partial capture
08-27 19:54	80m	-4 / -	RI1FJL	- / -	8	Partial capture
08-27 18:55	80m	-1 / -	RI1FJL	- / -	3	Partial capture
08-27 18:18	80m	- / -	SQ8GBG	+12 / -	5	Partial capture
08-27 18:17	80m	-9 / -	RI1FJL	- / -	38	Partial capture
08-27 18:05	80m	-9 / -	RI1FJL	- / -	17	Partial capture
08-27 17:58	80m	-1 / -	RI1FJL	- / -	7	Partial capture
08-25 20:51	40m	-1 / -	OS4K	- / -10	2	✓ Closing fragment
08-25 20:50	40m	+8 / -15	JH4HMG	-14 / -	3	✓ Closing observed
08-25 20:49	40m	+6 / -	PD0IFI	+9 / +2	5	✓ Full exchange observed
08-25 20:47	40m	+8 / -	S55OO	+2 / -	5	✓ Closing observed
08-25 20:47	40m	- / -	UA4FKT	+6 / -	2	Partial capture
08-25 20:45	40m	+4 / -	VJ6X	- / -15	5	✓ Closing fragment
08-23 14:46	40m	-8 / -	DJ2MS	- / +3	3	✓ Closing fragment
08-23 14:45	40m	-6 / -	M1EZU	- / -13	3	✓ Closing fragment
08-23 14:39	40m	-12 / -	DL9MY	- / -	3	Partial capture
08-07 21:51	40m	-7 / -	TJ1GD/P	- / -21	4	Partial capture
08-07 21:47	20m	-1 / -	BG3NQT	- / -15	3	✓ Closing fragment
07-24 22:59	20m	+7 / -	YO4NF	- / +2	4	Partial capture
07-24 22:57	20m	+4 / -	V31DL	- / -8	2	✓ Closing fragment
07-24 22:48	20m	+10 / -	HP1RY	- / -18	2	✓ Closing fragment
07-24 22:46	20m	+10 / -	BA4UFM	- / -18	2	✓ Closing fragment
07-24 22:44	20m	+8 / -	BA4VE	- / -13	4	✓ Closing fragment
07-24 22:41	20m	-3 / -	5A1AL	- / -20	4	✓ Closing fragment
07-24 18:26	40m	-11 / -	S79CMW	- / -15	3	✓ Closing fragment
07-02 20:12	80m	- / -	DB100FT	-4 / -	3	✓ Closing fragment
07-02 20:12	80m	- / -	UA4FKT	+6 / -	2	Partial capture
07-02 20:10	80m	-1 / -	TN8GD	- / -13	3	✓ Closing fragment
07-02 20:06	80m	+5 / -	TN8GD	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
011730  +4 1907  VP8A HB9RYZ JN47 (x9)
012215  -9  440  HB9RYZ VP8A RR73
012230 +11 2605  VP8A HB9RYZ 73
012245 +14 2606  HB9RYZ UA4FKT LO23 (x3)
012345  +4  705  HB9RYZ G8OO JO02

160m

UTC    dB Audio  Message
221715  -7 1942  RI1FJL HB9RYZ JN47 (x7)
235900  -9 2053  HB9RYZ R8LCA MO27 (x5)
011100  +0 1887  CE8WBJ HB9RYZ JN47 (x3)

40m

UTC    dB Audio  Message
204745  +6 1998  HB9RYZ UA4FKT LO23
204745  +1 1143  HB9RYZ S55OO JN76 (x2)
204830  +8 1998  S55OO HB9RYZ RR73
204845  +3 1143  HB9RYZ S55OO 73
204915 +10 2714  HB9RYZ PD0IFI JO32
204930  +5 1998  PD0IFI HB9RYZ +02
204945  +9 2714  HB9RYZ PD0IFI R+25
205000  +7 1998  PD0IFI HB9RYZ RR73
205015  +9 2714  HB9RYZ PD0IFI 73
205045 -15  289  HB9RYZ JH4HMG R-15
205100  +8 1998  JH4HMG HB9RYZ RR73
205115 -12  289  HB9RYZ JH4HMG 73
205130  -3 1999  OS4K HB9RYZ R-10 (x2)

20m

UTC    dB Audio  Message
224545  +9 2002  BA4VE HB9RYZ RR73
224645  +9 2002  BA4UFM HB9RYZ -18 (x2)
224845 +10 2002  HP1RY HB9RYZ -18 (x2)
225200 -15  920  HB9RYZ V31DL EK57
225715  +1 2002  V31DL HB9RYZ -08 (x2)
225915  +6 2002  YO4NF HB9RYZ R+02 (x4)
214715  +0 1970  BG3NQT HB9RYZ JN47 (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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