RA4HTH — 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: LO53

Receiver-side FT8 activity involving RA4HTH, decoded by SO8OO in southeastern Poland. 330 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 41 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-20.

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 330 FT8 messages attributed to RA4HTH as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (51%), followed by 40 m (43%) and 20 m (6%). Most decodes (100%) 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 -10 dB.

Overview

330
Messages attributed
41
UTC dates decoded
84
Active 15-min windows
-10 dB
Estimated median S/N

Bands

80m · 169 40m · 141 20m · 20
First attributed message: 2026-06-06
Last attributed message: 2026-10-20 15:35 UTC

Observed FT8 message patterns

Attributed sample
330 messages
Active dates
41 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-19 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 77, moderate (-15 to -9 dB) 109, strong (≥ -8 dB) 144.

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 RA4HTH 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 RA4HTH

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
LO53 · 136 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,036 km (approx.)
Last such locator decoded
2026-10-20 15:35 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 UTCBandRA4HTH S/NCounterpartCounterpart S/NMsgsCapture
10-20 15:33 40m +2 / - R9OON - / -6 2 ✓ Closing fragment
10-20 15:33 40m - / - PA2DX -10 / - 3 Partial capture
10-20 15:30 40m +2 / -6 DL3BQV +10 / -17 6 ✓ Full exchange observed
10-20 15:29 40m - / - ON7DE -8 / - 4 Partial capture
10-20 15:26 40m +2 / -3 R4UAS -12 / -5 5 ✓ Full exchange observed
10-20 15:25 40m +2 / 0 R3KJF -2 / - 5 ✓ Closing observed
10-20 15:25 40m +4 / -5 R6FMK -1 / 0 4 ✓ Full exchange observed
10-20 15:23 40m - / +2 RM7M -10 / - 2 ✓ Closing fragment
10-20 15:12 40m -8 / - RA0WBI - / -2 3 ✓ Closing fragment
10-17 17:19 40m -10 / -11 G8KHF -1 / -11 3 Partial capture
10-17 16:46 40m -10 / - UA3SCU - / -4 2 Partial capture
10-17 16:16 40m -10 / -14 UA3YPS -13 / - 6 ✓ Closing observed
10-10 17:56 40m -14 / -13 II5GG -7 / -5 4 ✓ Full exchange observed
10-10 17:26 40m - / -7 UB6LUR -10 / - 2 ✓ Closing fragment
10-10 16:54 40m -15 / - R1OAC - / -16 3 Partial capture
10-09 18:44 80m -4 / +6 RT3K/P -1 / 0 4 ✓ Full exchange observed
10-09 18:40 80m -14 / - RM9WN - / +7 2 ✓ Closing fragment
10-04 17:11 80m - / -10 EU2ABM +2 / - 2 ✓ Closing fragment
10-04 16:59 80m - / -9 IK0HBN +8 / - 6 ✓ Closing fragment
10-04 16:59 80m - / -5 R3AT +14 / - 3 ✓ Closing fragment
10-04 16:59 80m - / -1 UA4FOV -12 / - 2 ✓ Closing fragment
10-04 16:52 80m -10 / -2 RA3WY +5 / +10 4 ✓ Full exchange observed
10-04 16:49 80m -4 / +1 RO3ZR +2 / -12 6 ✓ Full exchange observed
10-04 16:47 80m -6 / - RQ3D -24 / -11 3 ✓ Closing observed
10-04 16:45 80m - / -4 RO3ZR +2 / - 2 Partial capture
10-04 16:45 80m - / +1 R1IV -20 / - 2 ✓ Closing fragment
10-04 16:44 80m - / +3 RW4HD -3 / - 5 ✓ Closing fragment
10-04 16:41 80m -7 / - RQ3D -20 / -16 2 Partial capture
10-04 16:39 80m - / -6 R6FGF -18 / - 2 ✓ Closing fragment
10-04 16:33 80m - / -10 DL1DXX +9 / - 3 ✓ Closing fragment
10-04 16:32 80m - / -10 RA6ATZ -20 / - 2 Partial capture
10-02 18:23 40m -13 / +3 YO9HP +2 / +3 5 ✓ Full exchange observed
10-02 18:09 40m -8 / - YO2LFP - / -10 2 Partial capture
09-29 18:03 40m - / -15 OE8DDX +7 / - 3 ✓ Closing fragment
09-29 17:59 40m -12 / -5 LZ2PAJ -2 / -5 3 ✓ Full exchange observed
09-29 17:52 40m -18 / -11 RL1F -15 / - 3 ✓ Closing observed
09-21 17:56 40m -12 / - RL3FA - / +7 2 ✓ Closing fragment
09-20 17:18 40m -2 / +2 HB9ELE +11 / 0 8 ✓ Full exchange observed
09-20 17:04 40m -1 / +5 UA3IDQ -6 / -13 5 ✓ Full exchange observed
09-19 19:15 80m -7 / - RK9UE - / +8 2 Partial capture
09-19 17:43 40m -10 / -9 HB9CXZ 0 / -5 5 ✓ Full exchange observed
09-16 17:04 80m -19 / -2 R3KLE 0 / -4 4 ✓ Full exchange observed
09-16 16:59 80m -10 / -1 RQ3M -11 / +1 5 ✓ Full exchange observed
09-16 16:57 80m - / -4 YO4NT +2 / - 3 ✓ Closing fragment
09-16 16:56 80m -10 / +2 RA3QTT -4 / - 3 ✓ Closing observed
09-16 16:56 80m -15 / -15 RX6DA -8 / -4 6 ✓ Full exchange observed
09-16 16:54 80m -9 / - R4HKO - / +9 3 ✓ Closing fragment
09-16 16:49 80m - / -7 YO4NT 0 / - 2 Partial capture
09-16 16:48 80m -14 / - R4HGK - / +4 2 Partial capture
09-16 16:41 80m -15 / - RW4LMR - / +9 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
153100  +3 2871  CQ RA4HTH LO53
153115  +0 1785  RA4HTH ON7DE JO20
153115 +10 2871  RA4HTH DL3BQV JO52
153130  +1 2871  DL3BQV RA4HTH -17
153145  +8 2870  RA4HTH DL3BQV R-06
153200  +2 2871  DL3BQV RA4HTH RR73
153215 +11 2871  RA4HTH DL3BQV 73
153300  +3 2871  CQ RA4HTH LO53
153315 -13 3092  RA4HTH PA2DX JO23
153330  +0 2871  R9OON RA4HTH -06
153345  -8 3091  RA4HTH PA2DX JO23
153400  +4 2871  R9OON RA4HTH RR73
153415  -8 3092  RA4HTH PA2DX JO23
153430  +8 2871  CQ RA4HTH LO53 (x2)
80m 
UTC    dB Audio  Message
165930  +4  618  RA4HTH IK0HBN JN62
170000 +15 2056  RA4HTH R3AT RR73
170000 +11  618  RA4HTH IK0HBN JN62 (x4)
171100  +0 2007  RA4HTH EU2ABM R-10 (x2)
184000 -15 1382  RM9WN RA4HTH +07 (x2)
184430  -5  481  RA4HTH RT3K/P +06 (x2)
184515  -4  421  RT3K/P RA4HTH R+00
184530  +4  421  RA4HTH RT3K/P RR73
184700 -11  622  RA4HTH R9CA +11
20m 
UTC    dB Audio  Message
124015  -8  465  XU7O RA4HTH LO53

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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