RM3ZR — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving RM3ZR, decoded by SO8OO in southeastern Poland. 2,274 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 60 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-10-07.

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 2,274 FT8 messages attributed to RM3ZR as the transmitting token by decoded message structure across 60 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (69%), followed by 80 m (20%) and 40 m (10%). Most decodes (96%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -3 dB.

Overview

2,274
Messages attributed
60
UTC dates decoded
358
Active 15-min windows
-3 dB
Estimated median S/N

Bands

160m · 1,569 80m · 444 40m · 237 20m · 3 10m · 21
First attributed message: 2026-06-20
Last attributed message: 2026-10-07 16:20 UTC

Observed FT8 message patterns

Attributed sample
2,274 messages
Active dates
60 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-14 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 159, moderate (-15 to -9 dB) 394, strong (≥ -8 dB) 1,721.

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 RM3ZR in decoded directed-looking exchanges:

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 RM3ZR

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 · 1,384 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,223 km (approx.)
Last such locator decoded
2026-10-07 16:20 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 UTCBandRM3ZR S/NCounterpartCounterpart S/NMsgsCapture
10-07 16:12 160m -6 / - R8KAW/P - / - 10 Partial capture
10-07 16:10 160m -2 / - UA1OIW - / - 2 Partial capture
10-04 19:04 160m -7 / - JH2VVH - / -16 3 ✓ Closing fragment
10-04 19:01 160m -6 / -8 RX3I +4 / -4 4 ✓ Full exchange observed
10-04 18:57 160m - / -13 R3YCJ -14 / - 2 ✓ Closing fragment
10-04 18:52 160m -10 / - 9H1ES - / - 2 Partial capture
10-04 18:48 160m -7 / -7 RM5P -22 / - 4 ✓ Closing observed
10-04 18:46 160m -12 / - RN1NEB - / -9 3 ✓ Closing fragment
10-04 18:15 160m -2 / - RA0SCA - / - 2 Partial capture
10-04 18:12 160m -8 / - UN7BDZ - / - 2 Partial capture
10-04 18:09 160m -10 / -9 IK6GPZ -1 / -10 7 ✓ Full exchange observed
10-04 18:08 160m -6 / - R80SAA - / -10 3 ✓ Closing fragment
10-04 18:04 160m -2 / - RW3XZ - / - 2 Partial capture
10-04 18:01 160m +1 / - RA0SCA - / - 6 Partial capture
10-04 17:46 160m -2 / - RA0SCA - / - 9 Partial capture
10-04 17:36 40m -12 / - BG5JKZ - / -21 2 Partial capture
10-04 16:58 80m -1 / - UB0SMX/P - / -20 4 ✓ Closing fragment
10-04 16:54 80m -2 / - SP5LUNA - / -11 2 Partial capture
10-04 16:50 80m -5 / - R1BED -9 / -16 4 ✓ Closing observed
10-04 16:34 160m -8 / - RA3ZK - / - 2 Partial capture
10-04 16:28 160m 0 / - R9TT - / -15 2 ✓ Closing fragment
10-04 16:24 160m -7 / - R3BHK 0 / +1 4 ✓ Closing observed
10-04 16:20 160m -4 / -8 EU8N -2 / +1 6 ✓ Full exchange observed
10-02 18:34 160m -4 / - JA8HYB - / - 2 Partial capture
10-02 18:27 160m - / -13 R8DV -17 / - 2 Partial capture
10-01 16:27 160m - / +3 HA8EV -20 / - 2 ✓ Closing fragment
10-01 16:21 80m +11 / - RJ3T -19 / -6 3 ✓ Closing observed
10-01 16:17 80m - / - R3KLE -6 / - 2 ✓ Closing fragment
09-30 18:13 160m -8 / - ON4GG - / - 2 Partial capture
09-30 18:08 160m -14 / - JA0EIY - / - 2 Partial capture
09-30 18:06 160m -16 / - DL6EL -10 / -8 2 Partial capture
09-30 18:04 160m -10 / - RA3TRR - / -4 2 ✓ Closing fragment
09-30 18:01 160m -15 / - JI8AQC - / -10 3 ✓ Closing fragment
09-30 18:00 160m -18 / - R8AC - / -14 2 ✓ Closing fragment
09-30 17:58 160m -7 / - OD5XX -17 / -13 4 ✓ Closing observed
09-30 17:56 160m -8 / - JA8HYB - / - 2 Partial capture
09-30 17:40 160m -14 / - R9UG - / -6 2 ✓ Closing fragment
09-30 17:34 160m -1 / -7 EW6CB 0 / +2 5 ✓ Full exchange observed
09-30 17:31 160m -9 / - DQ30GDXF - / - 3 Partial capture
09-30 17:28 160m -13 / +7 RV6AVU -11 / +4 5 ✓ Full exchange observed
09-29 17:21 160m -4 / -4 RA5AD -2 / -2 5 ✓ Full exchange observed
09-29 17:20 160m -14 / -2 R3RR -12 / +5 4 ✓ Full exchange observed
09-28 19:11 160m -16 / - RT5C -19 / - 3 ✓ Closing observed
09-28 19:03 160m -8 / - RW3VR - / -12 3 ✓ Closing fragment
09-28 18:59 160m +4 / - JA8EPO - / -17 4 ✓ Closing fragment
09-28 16:23 80m - / +2 UN0GY -13 / - 3 ✓ Closing fragment
09-28 16:03 160m -20 / - R6DAZ - / +3 2 ✓ Closing fragment
09-28 15:52 160m -22 / - RL3DA - / +2 2 Partial capture
09-28 15:48 160m -18 / - RN3QOO - / 0 2 ✓ Closing fragment
09-27 18:23 80m 0 / -3 F6AOJ +6 / -10 7 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
190500  -7 2189  JH2VVH RM3ZR R-16 (x2)
192230  -9 2189  S51XA RM3ZR KO90
161015  +1 2192  UA1OIW RM3ZR KO90 (x2)
161245  -7 2191  R8KAW/P RM3ZR KO90 (x10)
40m 
UTC    dB Audio  Message
150115  +0 2257  YO9PH RM3ZR R-06
150300  +5 2085  RM3ZR YO9PH RR73
150615  +1 2255  RZ9OL/M RM3ZR KO90
150745  +0 2254  RC6AO/P RM3ZR KO90 (x2)
150845  +0 2253  <RZ9OL/M> RM3ZR KO90 (x4)
151645  -1 1796  SV8/SV1SAX RM3ZR KO90 (x2)
172900  -9 2406  BA8BLJ RM3ZR KO90
173630 -12 1233  BG5JKZ RM3ZR KO90 (x2)
173915  -7 2090  EP2AES RM3ZR KO90
80m 
UTC    dB Audio  Message
162015  +1 1405  RZ6HBK RM3ZR R-05
162145 +11  438  RJ3T RM3ZR R-06
162200 -19  437  RM3ZR RJ3T RR73
162215 +11  437  RJ3T RM3ZR 73
165000  -4 1944  R1BED RM3ZR KO90 (x2)
165045  -9 1417  RM3ZR R1BED RR73
165100  -3 1944  R1BED RM3ZR 73
165415  -3 1944  SP5LUNA RM3ZR KO90
165430  +2 2728  RM3ZR RO2E/M -01
165445  +0 1944  SP5LUNA RM3ZR R-11
165845  +0 1943  UB0SMX/P RM3ZR KO90 (x4)
20m 
UTC    dB Audio  Message
102145  +1 2189  RI1FJL RM3ZR KO90 (x3)
10m 
UTC    dB Audio  Message
152815 -11 1852  CE4KM RM3ZR KO90 (x10)
153600  -4 1319  LW5ELI RM3ZR KO90 (x3)
153730  +0  495  EB5DFU RM3ZR R-07 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee