HB9DDZ — 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: Switzerland Most frequent locator attributed to this token: JN47

Receiver-side FT8 activity involving HB9DDZ, decoded by SO8OO in southeastern Poland. 216 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-09-04 and 2026-11-05.

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 216 FT8 messages attributed to HB9DDZ as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 60 m (37%) and 80 m (4%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -3 dB.

Overview

216
Messages attributed
21
UTC dates decoded
41
Active 15-min windows
-3 dB
Estimated median S/N

Bands

80m · 8 60m · 80 40m · 125 10m · 3
First attributed message: 2026-09-04
Last attributed message: 2026-11-05 20:58 UTC

Observed FT8 message patterns

Attributed sample
216 messages
Active dates
21 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-13 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 37, strong (≥ -8 dB) 164.

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 HB9DDZ 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 HB9DDZ

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
JN47 · 151 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
975 km (approx.)
Last such locator decoded
2026-11-05 20:55 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 UTCBandHB9DDZ S/NCounterpartCounterpart S/NMsgsCapture
11-05 20:57 60m -6 / - EA1ETQ/P - / -6 3 Partial capture
11-05 20:54 60m -7 / - EA1ETQ/P - / - 3 Partial capture
11-05 20:51 60m -5 / - GX6RAF/P -16 / -10 4 ✓ Closing observed
11-05 20:40 40m +2 / - YC2BUZ - / - 2 Partial capture
11-04 21:25 40m -5 / - <...> - / -14 2 Partial capture
11-04 21:05 40m +4 / - SP6FME - / +6 2 ✓ Closing fragment
11-04 21:02 40m +1 / - 9A3AUH - / -1 2 ✓ Closing fragment
11-04 20:55 40m -1 / - HS0ZOY - / - 7 Partial capture
11-03 15:34 10m +7 / - N0TB - / -24 3 ✓ Closing fragment
11-01 20:26 60m +11 / - SP9AMH/QRP - / -1 4 Partial capture
10-25 20:52 40m -12 / - SP0ZKR - / - 2 Partial capture
10-25 20:45 40m -20 / - YC2ULK - / - 9 Partial capture
10-25 20:41 40m -18 / - VK7AC - / - 3 Partial capture
10-25 20:06 80m +4 / - DD0IPA - / - 4 Partial capture
10-25 20:00 40m -13 / - UB4CJV/QRP - / - 5 Partial capture
10-24 11:31 40m -14 / -16 DL/HB9HVW/P -11 / -19 8 Partial capture
10-24 09:47 40m - / - UT4PA +2 / - 2 Partial capture
10-24 09:36 40m - / -6 SP8S/P 0 / - 2 ✓ Closing fragment
10-24 09:32 40m -9 / - SP8S/P - / - 2 Partial capture
10-24 09:16 40m -10 / - R0XAJ/1 - / -18 4 Partial capture
10-23 20:33 60m - / +9 Z68QQ -10 / - 2 ✓ Closing fragment
10-22 20:24 60m +4 / - VE1YX -18 / -11 5 ✓ Closing observed
10-22 20:18 60m +7 / - VO1NC - / -7 3 ✓ Closing fragment
10-22 20:16 60m -2 / - SP2EWQ - / +1 2 ✓ Closing fragment
10-22 20:13 60m +4 / -7 EA8AE -13 / -15 7 ✓ Full exchange observed
10-22 18:14 60m -4 / -3 PA4PA +15 / - 5 ✓ Closing observed
10-13 19:17 40m -3 / - VK3AMP - / -17 17 Partial capture
10-12 19:44 60m -14 / - 9H6C - / -6 3 Partial capture
10-12 19:32 40m 0 / - IT9GJK/P - / 0 3 ✓ Closing fragment
10-11 18:01 60m -2 / - 9H6C - / - 13 Partial capture
10-11 17:56 60m -5 / - 9H6C - / - 4 Partial capture
09-29 21:22 40m +4 / - AP2FLY - / - 2 Partial capture
09-29 20:34 40m +1 / - JA0LFV - / -20 3 Partial capture
09-29 20:24 40m +2 / - VJ6X - / -24 12 ✓ Closing fragment
09-29 17:55 40m +2 / - G6HUI - / - 2 Partial capture
09-24 18:44 40m -13 / -7 UR3HC -4 / -13 6 ✓ Full exchange observed
09-24 18:40 40m -10 / - DB0IPA - / - 10 Partial capture
09-21 20:53 80m -3 / - JH2FXK - / - 2 Partial capture
09-21 20:50 80m -12 / - JA4TKY - / - 2 Partial capture
09-13 19:50 40m -5 / -12 DK8HC -8 / -3 8 ✓ Full exchange observed
09-13 19:50 40m - / - PD0LBY -8 / - 2 Partial capture
09-13 19:48 40m +1 / - G7VGY/P -23 / -11 5 ✓ Closing observed
09-11 21:11 60m 0 / - VE1YX - / -4 4 ✓ Closing fragment
09-11 19:48 40m -2 / - EA1IQM - / -3 6 ✓ Closing fragment
09-10 19:43 60m +4 / - EI3GG/P - / -12 3 ✓ Closing fragment
09-09 19:46 40m -7 / - EW6DM/P - / - 10 Partial capture
09-09 18:40 60m +6 / - <...> - / +10 2 Partial capture
09-06 19:49 60m +2 / -16 BH8ESR -18 / - 8 Partial capture
09-06 19:41 60m - / 0 SP8BJU +4 / - 2 Partial capture
09-06 19:37 60m -3 / -1 Z68PX -3 / -16 10 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
202615 +11 2475  SP9AMH/QRP HB9DDZ JN47 (x3)
202730  +1 2261  HB9DDZ PI40EUDXF +00
202745 +12 2475  SP9AMH/QRP HB9DDZ R-01
205100  -5 2057  GX6RAF/P HB9DDZ JN47 (x2)
205145 -16  956  HB9DDZ GX6RAF/P RR73
205200  -8 2057  GX6RAF/P HB9DDZ 73
205400  -7 2141  EA1ETQ/P HB9DDZ JN47 (x6)
40m 
UTC    dB Audio  Message
205545  +1 2964  HS0ZOY HB9DDZ JN47 (x6)
210000  +1 2964  <...> HB9DDZ R+03
210230  +0 2964  9A3AUH HB9DDZ -01 (x2)
210500  +3 2964  SP6FME HB9DDZ +06 (x2)
212545  -6 2810  <...> HB9DDZ JN47 (x2)
204045  +1  663  YC2BUZ HB9DDZ JN47 (x2)
10m 
UTC    dB Audio  Message
153430  +8 2926  N0TB HB9DDZ JN47 (x3)
160m 
UTC    dB Audio  Message
210800 +13  314  HB9DDZ RR73; DH6DAO <...> -12
210900  +6  314  HB9DDZ 4O7CC RR73
80m 
UTC    dB Audio  Message
204745  -8 2188  HB9DDZ HB10GBT +15
205045 -13 1757  JA4TKY HB9DDZ JN47 (x2)
205315  +0 1947  JH2FXK HB9DDZ JN47 (x2)
200615  -2 2284  DD0IPA HB9DDZ JN47 (x4)

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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