IZ0RDM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN61

Receiver-side FT8 activity involving IZ0RDM, decoded by SO8OO in southeastern Poland. 275 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-07-21 and 2026-09-01.

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 275 FT8 messages attributed to IZ0RDM as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (97%), followed by 40 m (3%) and 10 m (1%). Most decodes (57%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

275

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

40m · 7 20m · 266 10m · 2

First attributed message: 2026-07-21
Last attributed message: 2026-09-01 12:18 UTC

Observed FT8 message patterns

Attributed sample: 275 messages
Active dates: 10 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -16 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 95, strong (≥ -8 dB) 149.

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 IZ0RDM in decoded directed-looking exchanges:

N2BJ · United States ×3 DF3IAL · Fed. Rep. of Germany ×2 DK8HC · Fed. Rep. of Germany ×2 M9RPO · England ×2 2E0OEW · England 9A4DK · Croatia A61QQ · United Arab Emirates DB1EF · Fed. Rep. of Germany DK6WS · Fed. Rep. of Germany DL5DQZ · Fed. Rep. of Germany F4BYA · France GE8DQP · England

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 IZ0RDM

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: JN61 · 91 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,158 km (approx.)
Last such locator decoded: 2026-09-01 12:18 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	IZ0RDM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-01 05:20	40m	-14 / -8	F1PBZ	-14 / +6	2	Partial capture
09-01 05:14	40m	-18 / -19	CN8NS	-16 / -	3	✓ Closing observed
09-01 04:51	40m	-14 / -5	KE4EB	0 / -	4	✓ Closing observed
08-31 20:16	40m	- / -	F1IQH	-4 / -	2	Partial capture
08-31 20:15	40m	-13 / -9	DK8HC	-4 / -	8	✓ Closing observed
08-31 20:10	20m	-8 / -	EA8UP	- / -8	6	Partial capture
08-31 13:55	20m	-9 / -	IZ0RD	- / -	3	Partial capture
08-31 13:45	20m	+1 / -8	DF3IAL	-13 / 0	9	✓ Full exchange observed
08-31 13:44	20m	-8 / -7	PE1ARS	-6 / +9	6	✓ Full exchange observed
08-31 13:41	20m	-10 / -	M7JVT	- / -6	3	Partial capture
08-31 13:38	20m	- / +1	ON1JP	-18 / -	2	Partial capture
08-31 13:24	20m	-12 / -	UT4QM	- / -7	2	✓ Closing fragment
08-31 13:18	20m	-1 / -	EW1EF	- / -7	3	Partial capture
08-31 13:17	20m	- / -	DC7MA	-13 / -	2	Partial capture
08-31 13:17	20m	- / -	PD0OTH	-1 / -	2	Partial capture
08-31 13:13	20m	- / -	DL5DQZ	-10 / -	3	Partial capture
08-31 13:11	20m	- / -	ON3MOH	-4 / -	3	Partial capture
08-31 13:02	20m	+7 / -	PA8FB	- / -	5	✓ Closing fragment
08-31 12:58	20m	+9 / -	M9RPO	-4 / -2	6	✓ Closing observed
08-31 12:52	20m	+5 / -	GE8DQP	- / +3	4	✓ Closing fragment
08-31 12:47	20m	+6 / -	2E0OEW	- / +1	3	✓ Closing fragment
08-31 12:24	20m	- / -	OK3MB	-1 / -	2	Partial capture
08-31 11:50	20m	+16 / -14	PE1GIX	-5 / +2	8	✓ Full exchange observed
08-31 11:43	20m	+15 / -	EI2FS	- / -	3	Partial capture
08-31 08:51	20m	- / -	PA3FXT	+1 / -	3	Partial capture
08-31 08:49	20m	+14 / -	M7MOK	- / +1	3	✓ Closing fragment
08-31 08:40	20m	+11 / 0	MI7RDK	0 / -5	10	✓ Full exchange observed
08-31 08:30	20m	+6 / -	TF5B	- / -	5	✓ Closing fragment
08-31 08:09	20m	-4 / -3	HA1BF	+1 / -	9	✓ Full exchange observed
08-31 08:00	20m	-5 / -	5P1KZX	- / -	3	Partial capture
08-31 07:56	20m	-16 / -	GJ0KYZ	+7 / -1	4	Partial capture
08-31 07:29	20m	+5 / -	SP1ZMO	- / -	2	Partial capture
08-31 07:26	20m	+8 / -7	F4BYA	+3 / +9	4	✓ Full exchange observed
08-30 22:21	20m	-9 / +9	PD0IFI	-6 / -	6	Partial capture
08-30 10:24	20m	- / -	PA0LDE	+9 / -	4	Partial capture
08-30 10:24	20m	- / -	PD9FLX	+4 / -	4	Partial capture
08-30 10:24	20m	- / +8	UT7UJ	+2 / -	5	Partial capture
08-22 05:29	20m	- / -	M7JVT	-4 / -	2	Partial capture
08-12 20:37	20m	-12 / -	IZ2CPO	- / -5	7	Partial capture
08-12 20:01	20m	- / -	PA7CV	-20 / -	7	Partial capture
08-12 20:01	20m	-6 / -	BA3QIQ	- / -12	12	Partial capture
08-12 19:59	20m	- / -	PD1HBL	-13 / -	5	Partial capture
08-12 19:44	20m	-13 / -	ON7AC	- / +2	10	Partial capture
08-12 19:40	20m	-13 / -	PA1AMS	- / -17	3	Partial capture
08-12 19:34	20m	-12 / -	5B4ARQ	- / -9	4	Partial capture
08-12 19:15	20m	-15 / +5	IN3GHP	-9 / -	8	✓ Full exchange observed
08-12 19:01	20m	-9 / -	NU1T	- / -	3	Partial capture
08-12 18:40	20m	-8 / -	N2BJ	- / -25	5	✓ Closing fragment
08-12 18:37	20m	-6 / -	N8RAF	- / -	4	Partial capture
08-12 18:17	20m	-12 / -	NU1T	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
121515 -19 1038  YF1CAR IZ0RDM JN61 (x2)

40m

UTC    dB Audio  Message
201630  -2  597  IZ0RDM DK8HC R-09 (x3)
201745 -12  598  DK8HC IZ0RDM RR73
201800  -1  598  IZ0RDM DK8HC 73
201815 -14  598  DK8HC IZ0RDM RR73
045145  -1 2426  IZ0RDM KE4EB R-05
045200 -13 2428  KE4EB IZ0RDM RR73
045215  +0 2426  IZ0RDM KE4EB 73
045230 -14 2427  KE4EB IZ0RDM 73
051430 -15 2247  IZ0RDM CN8NS -19 (x2)
051515 -18 2249  CN8NS IZ0RDM 73
052000 -14 2331  IZ0RDM F1PBZ -08
052045 -14 2332  F1PBZ IZ0RDM R+06

20m

UTC    dB Audio  Message
134730  -1 2604  DF3IAL IZ0RDM +00
134745 -16 2603  IZ0RDM DF3IAL R-08
134800  +3 2604  DF3IAL IZ0RDM -02
134815 -15 2603  IZ0RDM DF3IAL R-10 (x3)
135500 -10 2103  IZ0RD IZ0RDM +20 (x3)
201045  -3 1019  EA8UP IZ0RDM JN61 (x6)

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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