R3ZMM — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO90

Receiver-side FT8 activity involving R3ZMM, decoded by SO8OO in southeastern Poland. 1,676 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 82 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-16.

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 1,676 FT8 messages attributed to R3ZMM as the transmitting token by decoded message structure across 82 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (46%), followed by 80 m (22%) and 40 m (14%). Most decodes (90%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -5 dB.

Overview

1,676
Messages attributed
82
UTC dates decoded
337
Active 15-min windows
-5 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-10-16 19:49 UTC

Observed FT8 message patterns

Attributed sample
1,676 messages
Active dates
82 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-16.5 to +7.1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 204, moderate (-15 to -9 dB) 395, strong (≥ -8 dB) 1,077.

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.

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 R3ZMM

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
KO90 · 1,067 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,223 km (approx.)
Last such locator decoded
2026-10-16 19:49 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 UTCBandR3ZMM S/NCounterpartCounterpart S/NMsgsCapture
10-16 18:43 160m -11 / -15 OZ1KZX +10 / - 5 ✓ Closing observed
10-16 18:33 160m -5 / - 9A3SO - / - 3 Partial capture
10-16 18:24 160m -6 / -18 RA6MQ -23 / +3 5 ✓ Full exchange observed
10-16 18:22 160m 0 / -9 RN1NEB -18 / -10 4 ✓ Full exchange observed
10-16 18:15 160m -4 / - 9H1ES - / - 2 Partial capture
10-16 17:26 160m -13 / -22 S53K +1 / -24 9 Partial capture
10-15 21:21 160m -6 / - 9K2HS - / - 2 Partial capture
10-15 20:51 160m -12 / - RA0SCA - / - 2 Partial capture
10-15 20:45 160m -8 / -7 R6DAZ -18 / +4 4 ✓ Full exchange observed
10-15 20:27 160m -10 / - 9H1ES - / - 12 Partial capture
10-15 20:24 160m -14 / - JA9PPC - / - 2 Partial capture
10-14 18:13 160m -24 / - RZ0SW - / - 5 Partial capture
10-14 18:07 160m - / - HA5CPN -24 / - 2 Partial capture
10-14 18:05 160m -17 / 0 UA4CKZ -24 / -1 4 ✓ Full exchange observed
10-13 18:53 160m -11 / - JM1JZN - / - 4 Partial capture
10-12 19:07 160m -6 / - R6FFL - / - 2 Partial capture
10-12 19:03 160m -6 / - IZ6ERS - / - 2 Partial capture
10-12 18:59 160m -6 / - RA3VMD - / - 3 Partial capture
10-12 18:51 160m -7 / -19 RW1CW -19 / - 3 ✓ Closing observed
10-12 18:46 160m -14 / -15 S59A +10 / 0 4 ✓ Full exchange observed
10-12 18:46 160m -8 / - UA4FKT -24 / +3 3 Partial capture
10-12 18:42 160m -14 / - IZ2ZSF - / - 2 Partial capture
10-11 18:19 160m -8 / - R4CEC - / -5 3 ✓ Closing fragment
10-11 18:10 160m - / -2 UA3QQG -22 / - 2 ✓ Closing fragment
10-11 18:08 160m -17 / - R7ZY - / +2 3 ✓ Closing fragment
10-11 17:44 40m +2 / - UA9ZZ - / -9 2 ✓ Closing fragment
10-11 17:42 40m +7 / - JA9ELE - / -15 2 ✓ Closing fragment
10-11 17:40 40m +9 / - TA9M - / -9 3 ✓ Closing fragment
10-11 17:35 40m +4 / - BG0KD - / - 2 Partial capture
10-11 17:24 40m +4 / - RD3TOK - / -6 4 ✓ Closing fragment
10-11 17:23 40m 0 / - R8CKD - / -7 2 ✓ Closing fragment
10-11 17:21 40m -6 / -3 SV1ENG -9 / - 3 ✓ Closing observed
10-11 17:20 40m +1 / - BG2EFX - / -19 3 Partial capture
10-11 17:19 40m +2 / - R4PFY - / -2 2 ✓ Closing fragment
10-11 17:17 40m +2 / - UA9QFF - / -13 3 ✓ Closing fragment
10-11 17:15 40m +6 / - R9CA - / -13 2 ✓ Closing fragment
10-11 17:06 40m +8 / - A41DV - / -12 6 ✓ Closing fragment
10-11 16:57 40m +3 / - 8S2A - / -11 5 ✓ Closing fragment
10-10 19:41 160m +1 / - TA4EE - / - 3 Partial capture
10-10 19:28 160m +2 / -10 DK6WS -6 / -11 4 ✓ Full exchange observed
10-10 19:18 160m +2 / -22 II5GG -8 / -13 8 ✓ Full exchange observed
10-10 19:11 160m +4 / - F4JUQ - / -22 3 Partial capture
10-10 16:54 80m +8 / - 9A3EYA - / -12 2 ✓ Closing fragment
10-09 21:08 160m -11 / -16 F5BZB -1 / -4 5 Partial capture
10-09 21:06 160m -8 / 0 OH5C -5 / -16 4 ✓ Full exchange observed
10-09 21:00 160m -13 / - JH6PFY - / - 4 Partial capture
10-09 20:57 160m -18 / - R7GR - / -4 2 Partial capture
10-09 20:54 160m -8 / - II5GG - / - 2 Partial capture
10-09 20:35 160m -8 / - YE9BJM - / - 4 Partial capture
10-09 20:24 160m -6 / - JR1IZM - / -13 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m
UTC    dB Audio  Message
182415  -2  517  R2DGN R3ZMM RR73
182430 -24 2092  R3ZMM RA6MQ -18
182445  -5  517  RA6MQ R3ZMM R+03
182500 -24 2093  R3ZMM RA6MQ RR73
182515  -8  516  RA6MQ R3ZMM 73
183330  -3  517  9A3SO R3ZMM KO90 (x3)
184345 -10  757  OZ1KZX R3ZMM KO90 (x3)
184500  +9 2685  R3ZMM OZ1KZX -15 (x2)
192545 -24  810  9K2HS R3ZMM KO90
194900 -24 1513  OD5ZF R3ZMM KO90
40m
UTC    dB Audio  Message
172415  -2 2910  R8CKD R3ZMM RR73
172445  +4 2911  RD3TOK R3ZMM -06 (x4)
173530  +1 2974  BG0KD R3ZMM KO90 (x2)
174000 +11 2974  TA9M R3ZMM KO90 (x3)
174215 +10 2974  JA9ELE R3ZMM R-15 (x2)
174445  +2 2974  UA9ZZ R3ZMM R-09 (x2)
184430  -4 2800  ZL3RIK R3ZMM KO90
80m
UTC    dB Audio  Message
183115  +0 2253  R4SCQ R3ZMM -04 (x2)
183200  -1 2503  R3ZMM RX3ACO -01
183200  -5 1896  R3ZMM DL2LTH JO51
183215  +0 2253  RX3ACO R3ZMM R+02
183230  +1 2503  R3ZMM RX3ACO RR73
183230  -2 1896  R3ZMM DL2LTH JO51
183245  +0 2253  RX3ACO R3ZMM 73
183300 -10 2752  R3ZMM R2OM +02
183300 -10 1896  R3ZMM DL2LTH JO51
183315  +2 2253  R2OM R3ZMM R-02
183330 -10 2752  R3ZMM R2OM RR73
183345  +1 2253  R2OM R3ZMM 73
165445  +8 2545  9A3EYA R3ZMM R-12 (x2)
20m
UTC    dB Audio  Message
051100  +5 2788  RI1ANC R3ZMM KO90 (x4)
051330  +1 2784  EB3JT R3ZMM RR73 (x2)
051430  +6 2783  K7NN R3ZMM -09 (x4)
051630  +4 2781  EB3JT R3ZMM RR73 (x3)
051745  +4 2787  R3ZMM EB3JT RR73
051800  +6 2780  EB3JT R3ZMM 73

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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