YB7HBD — 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: Indonesia Most frequent locator attributed to this token: OI78

Receiver-side FT8 activity involving YB7HBD, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-08-25.

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 5 FT8 messages attributed to YB7HBD as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (80%), followed by 20 m (20%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.

Overview

5
Messages attributed
2
UTC dates decoded
2
Active 15-min windows
-18 dB
Estimated median S/N

Bands

40m · 4 20m · 1
First attributed message: 2026-08-23
Last attributed message: 2026-08-25 17:30 UTC

Observed FT8 message patterns

Attributed sample
5 messages
Active dates
2 UTC dates
Estimated median S/N
-18 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 0.

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 YB7HBD in decoded directed-looking exchanges:

Most frequent locator attributed to YB7HBD

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
OI78
SO8OO receiver locator
KN09VW
Locator-centre separation
10,365 km (approx.)
Last such locator decoded
2026-08-23 16:33 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 UTCBandYB7HBD S/NCounterpartCounterpart S/NMsgsCapture
08-27 17:53 80m - / -8 LB5WB -9 / - 2 ✓ Closing fragment
08-27 17:53 80m - / -16 OH2BVT -6 / - 3 Partial capture
08-25 17:19 20m - / -12 UA4HBJ -9 / - 2 ✓ Closing fragment
08-23 16:56 40m - / - OK4SD +8 / - 2 Partial capture
08-23 16:56 40m - / -3 DM2HK +2 / - 2 ✓ Closing fragment
08-23 16:45 40m - / - US1CR +7 / - 2 Partial capture
08-23 16:44 40m - / - UA3GX -3 / - 5 Partial capture
08-23 16:44 40m - / -16 UB4CJS -18 / - 6 Partial capture
08-23 16:43 40m - / - R7DX +10 / - 2 Partial capture
08-23 16:43 40m - / - UA3RMB -3 / - 12 Partial capture
08-23 16:40 40m - / -14 RD7LC -2 / - 2 ✓ Closing fragment
08-23 16:37 40m - / -11 IZ8PPI -23 / - 2 Partial capture
08-23 16:36 40m - / - RC2DD -10 / - 3 Partial capture
08-23 16:36 40m - / -19 RW9WT -8 / - 3 ✓ Closing fragment
08-23 16:36 40m - / - SP7SZJ -4 / - 6 Partial capture
08-23 16:34 40m - / - US1CR +7 / - 6 Partial capture
08-23 16:33 40m -19 / -17 TA1FR -11 / -18 7 ✓ Full exchange observed
07-31 15:32 20m - / - RA6FSV -14 / - 3 Partial capture
07-31 15:31 20m - / -4 EA3HMM -2 / - 3 ✓ Closing fragment
07-31 15:27 20m - / -7 RT6DU -4 / - 7 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
175315  -3  861  YB7HBD OH2BVT -16
175315 -10 2265  YB7HBD LB5WB R-08
175345  -5  861  YB7HBD OH2BVT -16
175345  -8 2265  YB7HBD LB5WB 73
175415  -9  861  YB7HBD OH2BVT -16
40m 
UTC    dB Audio  Message
164615  -3 1225  YB7HBD UA3RMB LO02
164615  -4  490  YB7HBD UA3GX KO92
164645 -20 1740  YB7HBD UB4CJS -16
164645  -5 1225  YB7HBD UA3RMB LO02
164645  -1  489  YB7HBD UA3GX KO92
164715  -4 1225  YB7HBD UA3RMB LO02 (x5)
165615  +2 1909  YB7HBD DM2HK -03
165645  +8 3045  YB7HBD OK4SD JN79
165645  +1 1909  YB7HBD DM2HK RR73
165715  +8 3045  YB7HBD OK4SD JN79
225300 -18 2103  YB7HBD D2ACE R-01
20m 
UTC    dB Audio  Message
152845  -2  981  YB7HBD RT6DU KN94 (x4)
153145  -3  455  YB7HBD EA3HMM JN00
153215 -12 1215  YB7HBD RA6FSV LN05
153215  -4  455  YB7HBD EA3HMM R-04 (x2)
153315 -17 1215  YB7HBD RA6FSV LN05 (x2)
232730  -3 1574  YB7HBD IK6DLK JN63 (x2)
171900  -9  745  YB7HBD UA4HBJ R-12 (x2)
173045 -15 1831  <...> YB7HBD -17

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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