7X4CZ — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

32 messages

Active dates

2 UTC dates

Estimated median S/N

+1 dB

Estimated 10th-90th percentile

-11 to +7 dB

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 26.

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 7X4CZ in decoded directed-looking exchanges:

Most frequent locator attributed to 7X4CZ

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

IM95 · 13 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

2,441 km (approx.)

Last such locator decoded

2026-08-24 19:52 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
195600  -7 1677  7X4CZ DH1KU JO30 (x3)
195800  +4 2026  7X4CZ CT2GFJ IM67 (x2)
195830  +0 2076  7X4CZ EA7LIC IM86 (x3)
200300  -8  279  7X4CZ DH1JG JO31
200600  -2 1917  7X4CZ PD2V -15 (x6)

UTC    dB Audio  Message
183715 -10 1457  7X4CZ R2PX -15
183745 -15 1057  7X4CZ R5BS KO85
183745 -15 1457  7X4CZ R2PX RR73
183915 -12  981  7X4CZ G0DEL 73
183945  -7  336  7X4CZ RX7K KN74
184345 -13  863  7X4CZ DL1TZ JO41 (x6)
051245 -17 1395  7X4CZ DK8FG JO54
193500  +2 1676  7X4CZ DL6NDN JO50 (x3)

UTC    dB Audio  Message
165045 -11 1242  7X4CZ EA3DG JN11
165045  -1 2282  7X4CZ F4NDC JN26
165115  -8 1241  7X4CZ EA3DG JN11
165115  -3 2281  7X4CZ F4NDC JN26
165715 -16 1244  7X4CZ IK1EZX 73
165715  +1  950  7X4CZ F4HSB JN37 (x2)
165915 -12 1712  7X4CZ PD2BS JO33
165915  +9 1208  7X4CZ DN9CA JO31 (x3)
170645 -10 2615  7X4CZ SP5BB -17
170645  +5 1049  7X4CZ DN9CA JO31

UTC    dB Audio  Message
194245  +0 2507  7X4CZ SP3CMA -22 (x2)
194400 -11 1198  CQ 7X4CZ IM95
194415  +7 1244  7X4CZ IK3BVD JN66 (x3)
194615 -13 1195  7X4CZ IN3WZS JN56
194645 -17  864  7X4CZ F6FEG IN96 (x2)
194745  -7 1195  7X4CZ IN3WZS JN56
194945  -8 1192  7X4CZ IK2TPX JN45 (x2)
195030 -20 1191  IK2TPX 7X4CZ RR73
195400 -24 1196  CQ 7X4CZ IM95                         a1
195415  -3 2640  7X4CZ R2XM -18

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.