7Z1BH — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,110 messages

Active dates

30 UTC dates

Estimated median S/N

-8 dB

Estimated 10th-90th percentile

-18 to +4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 199, moderate (-15 to -9 dB) 330, strong (≥ -8 dB) 581.

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 7Z1BH 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 7Z1BH

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

LL34 · 594 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

3,567 km (approx.)

Last such locator decoded

2026-08-22 17:40 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.

Recent FT8 messages decoded at SO8OO

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

UTC    dB Audio  Message
175445  +0  462  7Z1BH IK4LZH JN54
175445 +17 2283  7Z1BH G4FAL 73
175615 -15 1487  7Z1BH UA3ECJ KO83
175645 -10 1695  7Z1BH IS0KNG -17
175645  -4 2656  7Z1BH DL1R JN58
175715 -12 1695  7Z1BH IS0KNG -17
175715  -9 2656  7Z1BH DL1R JN58
175745 -18 1207  7Z1BH F1IQH JN27
175815  -3 1695  7Z1BH IS0KNG -17
175815 -12 1207  7Z1BH F1IQH JN27
175845  +3 1695  7Z1BH IS0KNG -17 (x5)

UTC    dB Audio  Message
015600 -21 2096  CQ 7Z1BH LL34                         a1 (x2)
015945 -24 1905  7Z1BH R4CHQ -21

UTC    dB Audio  Message
101245  -9  488  RK3DSW 7Z1BH 73
101645  -8  488  CQ 7Z1BH LL34
101745  +1  488  R3LDK 7Z1BH +02 (x2)
101915  -5  488  CQ 7Z1BH LL34
102215  -6  536  LZ1GZD 7Z1BH -03 (x6)
102615 -11  537  CQ 7Z1BH LL34                         a1 (x2)
102915  -8  537  SP9DPI 7Z1BH -16
134145  -8 1991  7Z1BH S59MA JN76

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.