Z31R — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: North Macedonia Most frequent locator attributed to this token: KN11

Receiver-side FT8 activity involving Z31R, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-08-20.

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 28 FT8 messages attributed to Z31R as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (71%), followed by 40 m (21%) and 60 m (4%). Several six-hour UTC windows tied for the largest share (64%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

60m · 1 40m · 6 20m · 20 10m · 1

First attributed message: 2026-06-17
Last attributed message: 2026-08-20 21:04 UTC

Observed FT8 message patterns

Attributed sample: 28 messages
Active dates: 5 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -24 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 13.

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 Z31R in decoded directed-looking exchanges:

IZ4ORF · Italy RA6ATZ · European Russia RA6YDX · European Russia RU6L · European Russia 5B4AIF · Cyprus CN2DX · Morocco HA1BF · Hungary I0KMJ · Italy IS0AWZ · Sardinia IT9EJW · Sicily IU0ERZ · Italy IV3APC · Italy

Most frequent locator attributed to Z31R

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: KN11 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 943 km (approx.)
Last such locator decoded: 2026-08-20 20:52 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	Z31R S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-16 01:47	40m	- / -17	KB3Z	+2 / -	2	✓ Closing fragment
09-16 01:34	40m	- / -13	PI4DX	-10 / -	2	✓ Closing fragment
09-05 07:02	40m	- / -19	SN40KZE	+16 / -	2	Partial capture
09-05 06:53	40m	- / -2	YO3GNF	-6 / -	3	✓ Closing fragment
09-05 01:46	40m	- / +5	SO100PKP	-14 / -	2	Partial capture
09-05 01:42	40m	- / -15	SO100PKP	-15 / -	2	Partial capture
08-24 08:33	20m	- / -3	R3KLA	+3 / -	2	Partial capture
08-21 06:55	20m	- / -4	IS0AWZ	+4 / -	2	✓ Closing fragment
08-20 21:00	40m	-13 / -18	OJ0JR	-5 / -15	6	✓ Full exchange observed
08-20 20:54	60m	- / -16	DL3TC	+8 / -	2	✓ Closing fragment
08-19 12:48	10m	- / -5	S52NY	-24 / -	2	Partial capture
08-14 08:06	20m	- / -25	R50RKZ	-5 / -	4	Partial capture
08-14 07:56	20m	- / -22	IU2OQT	-6 / -	9	Partial capture
07-27 12:05	20m	- / -2	R2RAU	-10 / -	2	✓ Closing fragment
07-27 06:39	20m	- / -	F4JCU	-13 / -	2	Partial capture
07-24 19:03	20m	- / -	DB9LG	-3 / -	5	Partial capture
07-21 13:23	20m	- / -16	R2RAK	-14 / -	2	✓ Closing fragment
07-21 13:20	20m	- / -	PD2WL	-22 / -	2	Partial capture
07-21 12:01	10m	- / -14	HB9HSJ	-11 / -	7	Partial capture
07-21 11:57	10m	- / -5	RA6YDX	-2 / -	2	✓ Closing fragment
07-16 07:56	20m	- / -19	E70A	-3 / -	6	Partial capture
07-14 12:13	20m	- / -7	<...>	-16 / -	2	Partial capture
07-14 11:27	20m	- / -8	RA9LL	-18 / -	2	✓ Closing fragment
07-13 21:00	20m	- / -5	IT9EJW	-18 / -	2	✓ Closing fragment
07-13 06:44	20m	- / -2	YO4GIY	-2 / -	2	✓ Closing fragment
07-13 06:27	20m	- / -20	HA1BF	-20 / -	2	✓ Closing fragment
07-09 20:20	20m	- / -12	JA0IXW	-10 / -	2	✓ Closing fragment
07-09 19:28	20m	- / -6	ES6QC	-6 / -	3	Partial capture
07-08 18:46	20m	- / -13	CN2DX	-8 / -	3	✓ Closing fragment
07-08 18:41	20m	- / -6	5B4AIF	-5 / -	4	✓ Closing fragment
06-28 14:24	10m	- / -14	IZ4ORF	-14 / -	4	✓ Closing fragment
06-26 07:02	10m	- / -3	F4FSY	-10 / -	3	Partial capture
06-26 06:55	10m	- / -10	RA6ATZ	+13 / -	2	✓ Closing fragment
06-26 06:50	10m	- / -2	RU6L	-3 / -	3	✓ Closing fragment
06-26 06:23	20m	- / -16	<...>	-12 / -	2	Partial capture
06-25 15:01	20m	- / -11	YB5WIR	-10 / -	2	Partial capture
06-24 05:06	20m	- / -19	IZ0HDB	-21 / -	3	Partial capture
06-24 05:01	20m	- / -14	I0KMJ	-8 / -	2	✓ Closing fragment
06-23 06:17	20m	- / -8	R4UR	-21 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
011615 -12  926  Z31R CR7BRV R-10
014230 -14 1609  Z31R SO100PKP R-15 (x4)
015000 -18 1853  Z31R RC9WC 73
065300  -7 2322  Z31R YO3GNF -02 (x3)
070230 +15  634  Z31R SN40KZE R-19 (x2)
013430 -10 2328  Z31R PI4DX R-13 (x2)
014730  +2  595  Z31R KB3Z R-17 (x2)

20m

UTC    dB Audio  Message
080200  -3  479  Z31R IU2OQT -12
080600  -5 2071  Z31R R50RKZ R-25 (x4)
065545  +1 1382  Z31R IS0AWZ R-04 (x2)
065745 -11 1203  Z31R ON8CA R-04
083300  +5  772  Z31R R3KLA R-03 (x2)
084415 -14 1427  Z31R PD4RJ R-15
075200  +2  783  Z31R II7MGXX R-01
075830  +3 2105  Z31R II7MGBT R+00
132400  -2 2057  Z31R RK6A 73
212700  -6  577  Z31R TJ1GD R-13

60m

UTC    dB Audio  Message
205230 -24 1883  EC3A Z31R KN11
205445 +10  777  Z31R DL3TC R-16 (x2)

10m

UTC    dB Audio  Message
142445 -16 1443  Z31R IZ4ORF R-14 (x3)
115745  -4  833  Z31R RA6YDX -05 (x2)
120130 -14 2113  Z31R HB9HSJ R-14 (x7)
094345 -16 1265  Z31R RO6K R-10
124815 -24 1846  Z31R S52NY R-05 (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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