IZ5PFI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN53

Receiver-side FT8 activity involving IZ5PFI, decoded by SO8OO in southeastern Poland. 64 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-18 and 2026-09-20.

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 64 FT8 messages attributed to IZ5PFI as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (44%), followed by 10 m (39%) and 40 m (9%). Several six-hour UTC windows tied for the largest share (94%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -6 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 5 40m · 6 20m · 28 10m · 25

First attributed message: 2026-07-18
Last attributed message: 2026-09-20 13:27 UTC

Observed FT8 message patterns

Attributed sample: 64 messages
Active dates: 3 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -12 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 45.

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 IZ5PFI in decoded directed-looking exchanges:

IU2HUQ · Italy ×2 EA7UW · Spain SP8OC · Poland YO3GNF · Romania YO9PH · Romania 9A4ZM · Croatia F1ODM · France OD5ZZ · Lebanon DK6WS · Fed. Rep. of Germany PC2J · Netherlands R7CD · European Russia RT6Z · 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 IZ5PFI

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: JN53 · 24 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,089 km (approx.)
Last such locator decoded: 2026-08-15 18:46 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	IZ5PFI S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 13:27	40m	-20 / +5	DK6WS	-16 / +6	3	✓ Full exchange observed
08-15 18:51	40m	- / -10	RY3F	-8 / -	2	Partial capture
08-15 18:49	40m	- / -	DL1EBW	-10 / -	2	Partial capture
08-15 18:48	40m	-21 / -6	IU2HUQ	-18 / -	3	✓ Closing observed
08-15 18:40	40m	- / -	E70SZ	-1 / -	3	Partial capture
08-15 18:40	40m	- / -13	F1PBZ	-7 / -	3	Partial capture
07-18 19:01	80m	-12 / -16	RT6Z	-2 / +2	5	✓ Full exchange observed
07-18 18:59	80m	-8 / -16	R7CD	+3 / +1	4	✓ Full exchange observed
07-18 18:47	40m	- / -	R6LPF	-4 / -	2	Partial capture
07-18 18:26	20m	- / -	G0OSK	+2 / -	3	Partial capture
07-18 18:20	20m	0 / -	DL1R	-6 / +3	9	Partial capture
07-18 18:18	20m	-13 / -	M7TUP	-13 / -11	3	Partial capture
07-18 18:16	20m	-8 / -6	9A4ZM	-2 / +3	6	✓ Full exchange observed
07-18 18:14	20m	-11 / -	PD1HPB	- / -12	2	Partial capture
07-18 18:09	20m	- / -	OM0RX	-16 / -	2	Partial capture
07-18 18:07	20m	- / -	YO5PHL	-8 / -	2	Partial capture
07-18 17:22	10m	-10 / -2	YO9PH	-16 / 0	5	✓ Full exchange observed
07-18 17:20	10m	+7 / -	SP8OC	- / +2	2	✓ Closing fragment
07-18 17:18	10m	+3 / -	DK8HC	- / -10	3	Partial capture
07-18 17:16	10m	-1 / -	EA7UW	- / -24	4	✓ Closing fragment
07-18 17:14	10m	-4 / -	HA7TM	- / +10	2	Partial capture
07-18 17:12	10m	+2 / +1	YO3GNF	-6 / -4	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
184600  -5  367  F5LVR IZ5PFI -08
184630  -9  367  CQ IZ5PFI JN53
184715 -19 1533  IZ5PFI IU5VLR JN53
184815 -18 1465  IZ5PFI IU2HUQ -06 (x2)
184945  -9 2514  IZ5PFI DL1EBW JO31
185000 -21 1465  IU2HUQ IZ5PFI 73
185015 -10 2514  IZ5PFI DL1EBW JO31
185045 -13 1466  IZ5PFI DL1EDR JO41
185115  -6 1465  IZ5PFI RY3F -10
185145  -8  539  IZ5PFI DK0ACI -07
185215 -10 1465  IZ5PFI RY3F -09
132730 -17 1286  IZ5PFI DK6WS +05
132745 -20 1285  DK6WS IZ5PFI R+06
132800 -14 1286  IZ5PFI DK6WS RR73

10m

UTC    dB Audio  Message
171845  +0  633  DK8HC IZ5PFI -10 (x3)
172045  +7 2917  SP8OC IZ5PFI R+02 (x2)
172145  +5 2918  CQ IZ5PFI JN53
172200 -16 2022  IZ5PFI YO9PH -02
172215 -11 2021  YO9PH IZ5PFI R+00
172230 -15 2022  IZ5PFI YO9PH RR73
172245  -9 2021  YO9PH IZ5PFI 73
172300 -18 2021  IZ5PFI YO9PH -05
172345  -6 2021  CQ IZ5PFI JN53 (x2)
172430  +0 2021  IZ5PFI IK1MJK/P JN35
060400  -7  592  CQ IZ5PFI JN53

80m

UTC    dB Audio  Message
185945  +2 2022  IZ5PFI R7CD -16
190030  -8 2021  R7CD IZ5PFI R+01
190045  +4 2022  IZ5PFI R7CD RR73
190045  -9 1084  IZ5PFI DO7MRC JO60
190100  -9 2021  R7CD IZ5PFI 73
190130 -12 1896  RT6Z IZ5PFI JN53
190145  -1 1896  IZ5PFI RT6Z -16
190200 -12 1896  RT6Z IZ5PFI R+02
190215  -4 1896  IZ5PFI RT6Z RR73
190230 -12 1896  RT6Z IZ5PFI 73
054615  -5 2294  IZ5PFI IQ4JO JN63 (x2)

20m

UTC    dB Audio  Message
182415  -1 2718  DL1R IZ5PFI -04 (x2)
182630  +6 2718  IZ5PFI G0OSK IO91 (x3)
182900  +8 2688  IZ5PFI F5HNQ IN98
182945  -2 2718  CQ IZ5PFI JN53 (x2)
183100 -19 2349  IZ5PFI OE6JFG JN77
183445  -7 2348  <...> IZ5PFI R-18
183545  -6 2347  CQ IZ5PFI JN53 (x3)
055030 -17 1644  OD5ZZ IZ5PFI 73
055100 -19 1644  CQ IZ5PFI JN53

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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