DK7ZT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO40

Receiver-side FT8 activity involving DK7ZT, decoded by SO8OO in southeastern Poland. 48,495 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 85 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 48,495 FT8 messages attributed to DK7ZT as the transmitting token by decoded message structure across 85 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 80 m (22%) and 20 m (11%). The busiest six-hour window was 18:00-00:00 UTC, containing 43% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

48,495
Messages attributed
85
UTC dates decoded
4,958
Active 15-min windows
-10 dB
Estimated median S/N

Bands

160m · 919 80m · 10,495 60m · 3,311 40m · 28,022 20m · 5,107 10m · 641
First attributed message: 2026-06-06
Last attributed message: 2026-09-20 12:45 UTC

Observed FT8 message patterns

Attributed sample
48,495 messages
Active dates
85 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-20 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13,881, moderate (-15 to -9 dB) 12,243, strong (≥ -8 dB) 22,371.

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 DK7ZT 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 DK7ZT

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
JO40 · 563 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
911 km (approx.)
Last such locator decoded
2026-08-19 03:59 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 UTCBandDK7ZT S/NCounterpartCounterpart S/NMsgsCapture
09-20 12:44 40m -16 / - GW6OHV - / +2 3 Partial capture
09-20 12:17 40m -17 / - G0WTZ - / -6 3 Partial capture
09-20 11:56 40m -20 / - DH2FW - / -5 3 ✓ Closing fragment
09-20 11:47 40m -18 / - DC2MA - / 0 4 ✓ Closing fragment
09-20 11:45 40m -16 / - RV3IN -17 / -13 3 ✓ Closing observed
09-20 11:43 40m -16 / - DH2FW - / +4 2 Partial capture
09-20 11:37 40m -16 / - PE1MEM - / -2 2 Partial capture
09-20 11:34 40m -16 / - DL1SKD - / +1 3 Partial capture
09-20 11:32 40m -16 / - DN2FBG - / +4 2 Partial capture
09-20 11:11 40m -16 / - GE4ANS - / -5 2 ✓ Closing fragment
09-20 11:09 40m -16 / - DL1SKD - / -1 2 Partial capture
09-20 11:07 40m -14 / - UR5KJA - / -20 4 Partial capture
09-20 11:04 40m -16 / - SP6PST 0 / - 6 ✓ Full exchange observed
09-20 10:17 40m -13 / - DA1XX - / - 3 Partial capture
09-20 10:05 40m -17 / - DM6MK - / - 2 Partial capture
09-20 10:02 40m -15 / - SQ100PKP - / -9 2 Partial capture
09-20 09:57 40m -14 / - DM6MK - / - 2 Partial capture
09-20 09:55 40m -15 / - SP5QNI - / -6 2 ✓ Closing fragment
09-20 09:18 40m -15 / - SP5MAZ - / +5 3 Partial capture
09-20 08:46 40m -12 / - SP3ADA - / +7 3 Partial capture
09-20 08:21 60m - / -13 SP4XD 0 / - 5 ✓ Closing fragment
09-20 08:16 40m -13 / - OK8CZ - / -2 3 Partial capture
09-20 08:13 40m -14 / - GW6OHV - / +2 3 Partial capture
09-20 08:09 40m -18 / - OK8CZ - / -4 2 Partial capture
09-20 08:06 40m -17 / - ON7HO - / +8 3 Partial capture
09-20 07:50 40m -13 / - DN2FBG - / +2 3 Partial capture
09-20 07:46 40m -12 / - IU2RNE - / -8 4 Partial capture
09-20 07:44 40m -11 / - F4LBZ - / -9 3 Partial capture
09-20 07:27 40m -10 / - KE2MT - / +3 3 Partial capture
09-20 07:26 80m -5 / - F4NGR - / -9 5 Partial capture
09-20 07:19 40m -12 / - IU2RNE - / +10 3 Partial capture
09-20 07:17 40m -11 / - EA4IXY - / -20 3 Partial capture
09-20 07:06 80m -11 / - F1NRW - / -15 4 ✓ Closing fragment
09-20 06:59 60m -21 / - MI0AIH - / -11 3 Partial capture
09-20 06:55 40m -10 / - VK1AX - / -16 2 ✓ Closing fragment
09-20 06:54 40m -7 / - OE2AFX -20 / -15 3 ✓ Closing observed
09-20 06:49 60m -18 / - MI0AIH - / -9 3 Partial capture
09-20 06:49 80m -2 / - F1NRW - / -8 5 Partial capture
09-20 06:46 80m -10 / -5 DF0PDF -8 / - 3 ✓ Full exchange observed
09-20 06:44 60m -21 / - MI0AIH - / +9 4 Partial capture
09-20 06:40 40m -7 / - IU5SCG - / 0 3 Partial capture
09-20 06:36 60m -22 / - MI0AIH - / -8 2 Partial capture
09-20 06:34 80m -5 / - DF0PDF - / - 5 Partial capture
09-20 06:31 40m -4 / - EI4KF - / - 2 Partial capture
09-20 06:26 60m -20 / - LA1RQ - / -1 3 ✓ Closing fragment
09-20 06:24 60m -19 / - MI0AIH - / +1 3 Partial capture
09-20 06:23 40m -6 / - K8GED - / -8 2 Partial capture
09-20 06:21 80m +6 / - F1NRW - / -7 5 Partial capture
09-20 06:18 40m -4 / - NW2H - / -16 2 Partial capture
09-20 06:15 60m -17 / - MI0AIH - / -8 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
114615 -19 1906  RV3IN DK7ZT RR73
114630 -17 1077  DK7ZT RV3IN 73
114715 -14 1906  DC2MA DK7ZT +00 (x4)
115615 -22 1906  DH2FW DK7ZT -05 (x3)
121730 -15 1907  G0WTZ DK7ZT -06 (x3)
124430 -19 1907  GW6OHV DK7ZT +02 (x3)
60m 
UTC    dB Audio  Message
064415 -21 1902  MI0AIH DK7ZT +09 (x10)
082100  -2 1035  DK7ZT SP4XD R-13 (x5)
80m 
UTC    dB Audio  Message
064730  -6 1725  DK7ZT DF0PDF 73
064945 -11 1149  F1NRW DK7ZT -08 (x9)
072600  -3 1149  F4NGR DK7ZT -09 (x5)
160m 
UTC    dB Audio  Message
031300 -17 1141  WX7P DK7ZT -03 (x2)
033800 -13 1141  IU5AWQ DK7ZT -06 (x7)
034745 -14 1515  DK7ZT IU5AWQ R-19 (x3)
040430 -11 1141  DL3FBI DK7ZT -16 (x3)
20m 
UTC    dB Audio  Message
232230 -19 1395  K4HFY DK7ZT -16 (x3)
232400 -17 1395  K2VG DK7ZT -18 (x4)
232930 -13 1927  N9SNU DK7ZT -09 (x3)
233145 -17 1843  K4KEV DK7ZT -07 (x3)
233700  -4 2009  ZZ2DX DK7ZT -18 (x2)
10m 
UTC    dB Audio  Message
083600 -10  414  DK8MM DK7ZT -07
084500 -24 1851  DK7ZT F6AOJ R-24
084915 -13 2290  DK7ZT IZ4CCL 73
091630 +10  557  DK7ZT Z34K R-15 (x3)
093245 -11 2176  DK7ZT IU2IKT R+01
093800  -6  766  DK7ZT IZ5IME R+10 (x2)
103315 -18 1489  DK7ZT IK1LBL R-11 (x2)
104500 -11  610  IZ4TOA DK7ZT +03 (x2)
104615  +4  609  DK7ZT IZ4TOA R-11 (x2)

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.

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