9H/IZ4RDV — 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: Malta

Receiver-side FT8 activity involving 9H/IZ4RDV, decoded by SO8OO in southeastern Poland. 99 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-08-27.

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 99 FT8 messages attributed to 9H/IZ4RDV as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -5 dB; no usual signal pattern is inferred.

Overview

99
Messages attributed
2
UTC dates decoded
17
Active 15-min windows
-5 dB
Estimated median S/N

Bands

20m · 99
First attributed message: 2026-08-26
Last attributed message: 2026-08-27 13:01 UTC

Observed FT8 message patterns

Attributed sample
99 messages
Active dates
2 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-12 to +3 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 80.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with 9H/IZ4RDV 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.

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 UTCBand9H/IZ4RDV S/NCounterpartCounterpart S/NMsgsCapture
11-05 08:17 40m - / - OT4R -18 / - 3 Partial capture
08-27 13:00 20m - / -6 RN6HGI +12 / - 2 Partial capture
08-27 12:59 20m -6 / - <...> -10 / - 2 ✓ Closing fragment
08-27 12:55 20m -4 / -17 M0LAD +11 / -16 5 ✓ Full exchange observed
08-27 12:53 20m +4 / - TA2WSE - / -20 2 Partial capture
08-27 12:52 20m - / - M7MOK +4 / - 4 Partial capture
08-27 11:16 20m -12 / - DL9MY - / -10 3 Partial capture
08-27 10:18 20m - / - DL4DP -11 / - 4 Partial capture
08-27 10:18 20m - / - EA1IOK -3 / - 3 Partial capture
08-27 10:17 20m - / - F5IXN -4 / - 2 Partial capture
08-27 10:16 20m -3 / - <...> -9 / - 2 ✓ Closing fragment
08-27 10:15 20m - / - M0PBG +14 / - 4 Partial capture
08-27 09:46 20m - / -15 RD9M -1 / - 6 Partial capture
08-27 09:45 20m - / - IK3VBB +6 / - 5 Partial capture
08-27 09:39 20m - / - IK3VBB +1 / - 2 Partial capture
08-27 09:39 20m - / - RD9M/3 0 / - 4 Partial capture
08-27 09:38 20m - / -6 F1PSX 0 / - 2 Partial capture
08-26 17:33 20m - / -17 F1ODM -2 / - 2 Partial capture
08-26 17:03 20m - / -23 EA4GHH -7 / - 4 Partial capture
08-26 17:02 20m - / +8 G3BAM -4 / - 3 Partial capture
08-26 16:58 20m +2 / - M0EGG -1 / -18 5 Partial capture
08-26 16:49 20m - / - M7KPQ -8 / - 5 Partial capture
08-26 16:39 20m - / - M7KPQ -11 / - 2 Partial capture
08-26 16:39 20m - / -2 R6ADH -7 / - 6 Partial capture
08-26 16:38 20m - / - CT1BFP -5 / - 5 Partial capture
08-26 16:38 20m - / -9 M0EGG 0 / - 2 Partial capture
08-26 16:37 20m -5 / -2 F1ODM +18 / - 2 Partial capture
08-26 16:34 20m -5 / - <...> +5 / - 7 ✓ Closing fragment
08-26 16:34 20m -8 / -5 F1PPH -4 / +5 3 Partial capture
08-26 16:31 20m - / -10 TA1MB +19 / - 2 Partial capture
08-26 16:27 20m -12 / - <...> -2 / - 3 ✓ Closing fragment
08-26 16:00 20m 0 / - DC5QV - / -11 2 ✓ Closing fragment
08-26 15:58 20m -4 / - YO5PQY - / -8 3 ✓ Closing fragment
08-26 15:53 20m - / - M7NNB -6 / - 3 Partial capture
08-26 15:47 20m -12 / -17 YC7ANC -13 / 0 3 Partial capture
08-26 15:46 20m -4 / - SQ5OMY - / +1 2 Partial capture
08-26 15:41 20m -7 / -11 TA2EE -1 / +5 12 Partial capture
08-26 15:40 20m -2 / - <...> - / - 2 ✓ Closing fragment
08-26 15:38 20m -8 / - DM5BB - / -4 2 Partial capture
08-26 15:37 20m -4 / - <...> +13 / - 2 ✓ Closing fragment
08-26 15:37 20m 0 / -16 YC1SNI -10 / -7 3 Partial capture
08-26 15:35 20m -5 / - IU4AAJ - / -2 3 Partial capture
08-26 15:35 20m -7 / -3 IZ1AZS +10 / - 4 Partial capture
08-26 15:33 20m -5 / - <...> +9 / - 4 ✓ Closing fragment
08-26 15:32 20m -7 / -1 F4VTR +13 / +2 4 Partial capture
08-26 15:25 20m - / - PD0IFI -9 / - 2 Partial capture
08-26 15:12 20m - / +9 IU1TLG +14 / - 2 Partial capture
08-26 15:09 20m - / - EA4GHH -12 / - 5 Partial capture
08-26 15:07 20m -2 / - PD3LKN - / +5 2 Partial capture
08-26 15:03 20m +2 / -18 RY7G 0 / +5 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
093845  -6 2628  <9H/IZ4RDV> DB2HA JO52
093845  +4 1461  9H/IZ4RDV <...> 73
081715 -19 1462  9H/IZ4RDV OT4R +16 (x3)
20m 
UTC    dB Audio  Message
125600 +12  563  9H/IZ4RDV M0LAD
125615  -4  563  M0LAD 9H/IZ4RDV -16
125630  +9  563  9H/IZ4RDV M0LAD R-17
125645  -9  563  <...> 9H/IZ4RDV RR73
125700 +13  563  9H/IZ4RDV M0LAD 73
125745 +12  554  9H/IZ4RDV RN6HGI LN14
125815  -5  563  CQ 9H/IZ4RDV (x2)
125900 +11  563  9H/IZ4RDV GM0VMV IO85
125915 -11  563  F5PBG 9H/IZ4RDV -19
125945  -6  563  <...> 9H/IZ4RDV RR73
130000 -10  563  9H/IZ4RDV <...> 73
130045 +11  552  9H/IZ4RDV RN6HGI LN14 (x2)
130145 +11  552  TC30VD 9H/IZ4RDV 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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