R4HHN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO43

Receiver-side FT8 activity involving R4HHN, decoded by SO8OO in southeastern Poland. 3,278 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 74 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-16.

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 3,278 FT8 messages attributed to R4HHN as the transmitting token by decoded message structure across 74 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (39%), followed by 20 m (31%) and 40 m (25%). Most decodes (53%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.1 dB.

Overview

3,278
Messages attributed
74
UTC dates decoded
388
Active 15-min windows
-7.1 dB
Estimated median S/N

Bands

80m · 1,266 40m · 835 20m · 1,024 10m · 153
First attributed message: 2026-06-06
Last attributed message: 2026-09-16 01:18 UTC

Observed FT8 message patterns

Attributed sample
3,278 messages
Active dates
74 UTC dates
Estimated median S/N
-7.1 dB
Estimated 10th-90th percentile
-17 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 448, moderate (-15 to -9 dB) 1,014, strong (≥ -8 dB) 1,816.

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 R4HHN 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 R4HHN

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
LO43 · 1,953 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,903 km (approx.)
Last such locator decoded
2026-09-16 01:17 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 UTCBandR4HHN S/NCounterpartCounterpart S/NMsgsCapture
09-16 01:18 80m -2 / - RA9CAD -19 / -6 3 ✓ Closing observed
09-16 01:00 80m - / - OD5SB -10 / - 2 Partial capture
09-16 00:59 80m -1 / - RY2A -4 / -2 3 ✓ Closing observed
09-16 00:53 80m -8 / - II7IAME - / - 4 Partial capture
09-16 00:51 40m - / +1 GM6URC -18 / - 4 Partial capture
09-16 00:48 80m - / - ON4MAP -20 / - 6 Partial capture
09-16 00:47 80m - / - DO1OAS -7 / - 7 Partial capture
09-15 15:24 80m -12 / - RV9ABE - / -1 2 ✓ Closing fragment
09-14 16:24 80m -6 / - RK3YWA - / -18 2 ✓ Closing fragment
09-14 16:21 80m -23 / -5 RU3AMO 0 / -4 5 ✓ Full exchange observed
09-13 22:29 80m -6 / - UB3WDA - / -8 5 Partial capture
09-13 22:27 80m 0 / -4 OK1SI +12 / -6 4 ✓ Full exchange observed
09-13 22:25 80m -4 / -9 OZ1LGJ -11 / -11 5 ✓ Full exchange observed
09-13 22:21 80m -8 / -17 F1OBJ +8 / -12 4 ✓ Full exchange observed
09-13 22:17 80m -8 / -18 M0PEL +2 / -18 6 ✓ Full exchange observed
09-13 22:13 80m -1 / -8 F1PBZ +10 / -8 4 ✓ Full exchange observed
09-13 22:09 80m -4 / - F5NNN - / -15 2 Partial capture
09-13 22:06 80m 0 / - RK4PA/9 - / -12 2 Partial capture
09-13 22:05 80m -7 / - SP7ENZ +16 / -11 3 ✓ Closing observed
09-13 22:03 80m 0 / - PA5TON - / -8 2 ✓ Closing fragment
09-13 22:02 80m - / - F5NNN -5 / - 5 Partial capture
09-13 22:02 80m - / - ON4MAP -11 / - 4 Partial capture
09-13 22:00 80m -1 / -5 SP4NDY +16 / -3 5 ✓ Full exchange observed
09-13 21:59 80m +1 / -9 DA0O -15 / - 4 ✓ Closing observed
09-13 21:55 80m -9 / -10 RW5CW -8 / -6 5 ✓ Full exchange observed
09-13 21:51 80m -6 / - MW7GQB - / - 2 Partial capture
09-13 21:49 80m -2 / -15 DL2FM 0 / -15 4 ✓ Full exchange observed
09-13 21:25 40m -9 / - M7HET +6 / -7 5 ✓ Closing observed
09-13 21:23 40m -8 / -3 2E0UMK -11 / -8 5 ✓ Full exchange observed
09-13 21:20 80m - / -15 IZ8WDH +2 / - 2 Partial capture
09-13 21:11 80m -14 / - UA9JTJ/9 - / 0 2 Partial capture
09-13 21:06 80m - / +7 UI6A +5 / - 2 ✓ Closing fragment
09-13 21:03 80m -10 / -12 DO9FR -3 / -14 5 ✓ Full exchange observed
09-13 20:58 80m -10 / -17 DK9MLA +10 / -10 4 ✓ Full exchange observed
09-13 20:54 80m -8 / - UN8PC - / -4 2 ✓ Closing fragment
09-13 20:49 80m - / -8 RK3DSW -18 / - 2 ✓ Closing fragment
09-13 20:45 80m - / +8 RD7O -7 / - 3 ✓ Closing fragment
09-13 20:45 80m - / - SV2AEL +8 / - 3 Partial capture
09-13 20:34 80m - / -6 R3HH +6 / - 2 ✓ Closing fragment
09-13 20:33 80m - / - UB3WDA +2 / - 2 Partial capture
09-13 20:31 80m -7 / -1 R3PLA -24 / - 2 ✓ Closing observed
09-13 02:49 80m +1 / - RO3ZR -2 / 0 2 Partial capture
09-13 02:45 80m -14 / - R4HLO - / +1 2 ✓ Closing fragment
09-13 02:37 80m -7 / -23 DG7NFX -9 / - 6 ✓ Closing observed
09-13 02:37 80m -6 / -3 YL2EA -4 / -5 5 ✓ Full exchange observed
09-13 02:36 80m -2 / -3 DL7UKM -10 / -8 4 ✓ Full exchange observed
09-13 02:34 80m -12 / -7 HA8LD -9 / -13 6 ✓ Full exchange observed
09-13 02:33 80m -6 / -4 DO5PY -15 / -18 4 ✓ Full exchange observed
09-13 02:32 40m - / - RA6FRI +2 / - 6 Partial capture
09-13 02:13 80m +9 / - HC1DAZ - / -12 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
010145  +0 1028  CQ R4HHN LO43 (x5)
010430  +4 1027  F5UKW R4HHN LO43
011515  -2  921  CQ R4HHN LO43 (x6)
011815  -3  922  RA9CAD R4HHN -06 (x2)
011900 -19 2441  R4HHN RA9CAD 73
40m 
UTC    dB Audio  Message
212315 -12 1060  R4HHN 2E0UMK IO92
212330  -9 1196  2E0UMK R4HHN -08
212345 -11 1059  R4HHN 2E0UMK R-03
212400  -6 1196  2E0UMK R4HHN RR73
212415  -9 1059  R4HHN 2E0UMK 73
212500  -7 1196  CQ R4HHN LO43
212515  +6 2240  R4HHN M7HET IO91
212530 -10 1196  M7HET R4HHN -07 (x4)
005115 -19 1813  R4HHN GM6URC +01 (x4)
20m 
UTC    dB Audio  Message
155700 -12 1501  R4HHN G1OVA IO93
155715  +0 1500  DH3CW R4HHN LO43
155730 -17 1501  R4HHN G1OVA IO93
155745  -7 1500  DH3CW R4HHN LO43
155815  +4 1500  CQ R4HHN LO43 (x3)
155930  -5 1500  R4HHN G1OVA IO93
155945  +2 1500  CQ R4HHN LO43
160000  -6 1500  R4HHN G1OVA IO93 (x2)
160045  +4 1906  2E0NBL R4HHN LO43
160100  +6 2911  R4HHN F4BYA JN19 (x3)
10m 
UTC    dB Audio  Message
192615 -23 1626  R4HHN R6OIW RR73
192845  -9 1525  R4HHN PA1GLD JO21 (x6)
193200 -23 1427  R4HHN PU2UTY +00
193700 -22 1353  R4HHN PY4BSC RR73
170000 -13 1256  CQ R4HHN LO43 (x2)
110430 -23 1352  R4HHN E70SZ R-12
110600 -10 1513  R4HHN DG2SAT JN48 (x3)

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