HB9CYT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN36

Receiver-side FT8 activity involving HB9CYT, decoded by SO8OO in southeastern Poland. 1,061 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 30 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-30.

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 1,061 FT8 messages attributed to HB9CYT as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (46%), followed by 10 m (44%) and 80 m (9%). Most decodes (55%) fell within the six-hour window 11:00-17:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

1,061

Messages attributed

UTC dates decoded

155

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 95 40m · 20 20m · 484 10m · 462

First attributed message: 2026-06-08
Last attributed message: 2026-08-30 16:55 UTC

Observed FT8 message patterns

Attributed sample: 1,061 messages
Active dates: 30 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -19 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 279, moderate (-15 to -9 dB) 352, strong (≥ -8 dB) 430.

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 HB9CYT in decoded directed-looking exchanges:

DA0LH · Fed. Rep. of Germany ×2 E70SZ · Bosnia-Herzegovina ×2 I0LYO · Italy ×2 4X1UF · Israel 4Z5ML · Israel EA7Y · Spain LB4BK · Norway RA9ACA · Asiatic Russia RL3K · European Russia SQ4PKO · Poland SV1CQN · Greece 2W0YOX · Wales

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 HB9CYT

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: JN36 · 653 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,158 km (approx.)
Last such locator decoded: 2026-08-30 16:55 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	HB9CYT S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 16:48	20m	+1 / -	UN3P	- / -	3	Partial capture
08-30 16:43	20m	-6 / -	EP2AES	- / -	7	Partial capture
08-30 16:41	20m	-8 / -	LZ1BM	- / -13	3	✓ Closing fragment
08-30 16:37	20m	-8 / -	YO3NSS	- / -5	3	✓ Closing fragment
08-30 16:34	20m	-4 / -15	ES2AJ	-9 / +2	3	✓ Full exchange observed
08-30 16:31	20m	-12 / -	BU2FW	- / -	2	Partial capture
08-30 16:24	20m	-7 / -	UN3P	- / -	3	Partial capture
08-30 06:00	80m	-22 / +1	DO2SHJ	-12 / -	4	✓ Closing observed
08-30 05:59	80m	- / -1	OZ1KWJ	-9 / -	3	✓ Closing fragment
08-30 05:57	80m	-20 / -	AA3B	- / -	3	Partial capture
08-30 05:52	80m	-19 / -	NR4O	- / -	6	Partial capture
08-17 04:51	80m	-24 / -8	OZ1BLP	-13 / -15	5	✓ Full exchange observed
08-16 21:44	80m	- / -6	PC5H	-6 / -	2	Partial capture
08-16 21:32	80m	-14 / +2	<...>	+5 / -	2	Partial capture
08-16 21:29	80m	-22 / -10	I0LYO	-1 / -2	5	✓ Full exchange observed
08-16 21:24	80m	-17 / -	TF4M	-21 / -	2	✓ Closing observed
08-16 21:15	80m	- / -11	ES0MVM	0 / -	3	Partial capture
08-16 20:46	40m	- / -8	UA2KU	-6 / -	2	✓ Closing fragment
08-16 10:03	20m	- / -24	LA8OOA	-21 / -	3	✓ Closing fragment
08-16 09:42	20m	-22 / -	PA0LDE	-19 / -3	3	✓ Closing observed
08-16 09:39	20m	-12 / -3	GB0CSL	-2 / -	4	✓ Closing observed
08-16 09:33	20m	- / +5	DA0YFD	-10 / -	2	✓ Closing fragment
08-16 09:13	20m	- / -5	DK5DW	-10 / -	4	✓ Closing fragment
08-16 09:07	20m	-15 / -6	OM3PC	+4 / -	6	✓ Closing observed
08-16 09:05	20m	- / -10	OE1HLB	-6 / -	2	✓ Closing fragment
08-15 21:57	80m	-12 / -	EA5HM	-19 / -5	3	Partial capture
08-15 21:56	80m	-6 / -12	R50RKZ	-6 / -5	5	✓ Full exchange observed
08-15 21:53	80m	- / +10	OE5HHR	+2 / -	4	✓ Closing fragment
08-15 21:47	80m	-2 / -	EW8AAC	- / -	2	Partial capture
08-15 21:41	80m	-15 / -5	OZ6P	+6 / -	4	✓ Closing observed
08-15 21:35	80m	-4 / -	SK6MA/LH	- / -	4	Partial capture
08-15 21:32	80m	-14 / -14	E78Y	+5 / -3	8	✓ Full exchange observed
08-15 21:30	80m	-12 / -	DO4HHK	- / -13	3	✓ Closing fragment
08-15 21:26	80m	-7 / -	SK6MA/LH	- / -	4	Partial capture
08-15 21:18	80m	- / -3	SP2BBQ	+10 / -	4	✓ Closing fragment
08-15 21:17	80m	- / -6	DK0ACI	-11 / -	4	✓ Closing fragment
08-15 21:17	80m	- / -6	F1PBZ	0 / -	2	✓ Closing fragment
08-15 21:12	80m	-4 / -15	OH3DJP	-14 / -	4	✓ Closing observed
08-15 21:00	80m	-10 / -	TA3GO	- / -	5	Partial capture
08-15 20:58	80m	-6 / -9	8S2DX	-12 / -10	5	✓ Full exchange observed
08-15 20:58	80m	-13 / +10	DM2HR	-5 / -	2	Partial capture
08-15 20:53	80m	-6 / -	CT7AUT	- / -10	4	Partial capture
08-15 20:51	80m	-10 / -7	DO2XB	0 / -	4	✓ Closing observed
08-15 20:36	80m	-12 / -11	SN120LHS	-24 / -12	7	Partial capture
08-15 20:32	80m	-12 / -	DL9KM	-7 / -	6	✓ Closing observed
08-15 20:29	80m	-3 / -6	DA0LH	+17 / -2	5	✓ Full exchange observed
08-15 20:28	80m	-11 / -6	RX3DPK/LH	-6 / -7	2	Partial capture
08-15 20:24	80m	-16 / -	DB100FT	- / -7	2	Partial capture
08-15 20:23	80m	- / -	DH8BAC	+9 / -	2	Partial capture
08-15 20:20	80m	-12 / -13	DK4RH	-8 / -	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
164115  -5 2260  LZ1BM HB9CYT -13 (x3)
164345  -2 2260  EP2AES HB9CYT JN36 (x7)
164830  -6 2260  UN3P HB9CYT JN36 (x3)
165215 -10 2260  <...> HB9CYT JN36
165500 +10  377  TC30AGU HB9CYT JN36

80m

UTC    dB Audio  Message
055445 -18 1338  NR4O HB9CYT JN36 (x3)
055700 -22 1348  AA3B HB9CYT JN36 (x3)
055915 -14  733  HB9CYT OZ1KWJ JO45 (x3)
060015 -12 1957  HB9CYT DO2SHJ JN49 (x2)
060100 -22 1348  DO2SHJ HB9CYT RR73
060115 -15 1957  HB9CYT DO2SHJ 73
060315 -20 1551  HB9CYT DK6AH R-13
060545 -23 1348  VP2MAA HB9CYT JN36

40m

UTC    dB Audio  Message
204215 -15  935  HB9CYT M5WJF IO82 (x3)
164745 -21 1736  HB9CYT PE9JAN R+02 (x2)
170530 -14 1284  HB9CYT DA0OIE -16 (x2)
195745 -23 1322  DL2YMR HB9CYT JN36
201200 -21 1412  DA0LH HB9CYT JN36
201345 -10 1479  HB9CYT GB64MOD -03
201915 -23 1412  CQ HB9CYT JN36                        a1
204430 -24 1382  MM0CWJ HB9CYT JN36
204615 -10 1804  HB9CYT UA2KU -08 (x2)
205415 -21 2149  CN8NS HB9CYT JN36

10m

UTC    dB Audio  Message
084830 -10 1179  SQ4PKO HB9CYT R-05 (x2)
123400 -17 1175  LB4BK HB9CYT JN36 (x3)
123830 -21 1175  CQ HB9CYT JN36                        a1
124415  +4  662  HB9CYT SV1CQN -20 (x2)
125645 -20 1144  EA7Y HB9CYT -12 (x3)
130230 -12 1144  YT2ZE HB9CYT JN36
130430 -18 1175  CQ HB9CYT JN36
130645 -18 1175  YT2ZE HB9CYT JN36 (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.

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