JH0GHZ — 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: Japan Most frequent locator attributed to this token: PM85

Receiver-side FT8 activity involving JH0GHZ, decoded by SO8OO in southeastern Poland. 12 FT8 messages attributed to this token as transmitter, on 160m, 80m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-19 and 2026-10-29.

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 12 FT8 messages attributed to JH0GHZ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (42%), followed by 20 m (42%) and 160 m (17%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.

Overview

12
Messages attributed
4
UTC dates decoded
5
Active 15-min windows
-9 dB
Estimated median S/N

Bands

160m · 2 80m · 5 20m · 5
First attributed message: 2026-08-19
Last attributed message: 2026-10-29 20:30 UTC

Observed FT8 message patterns

Attributed sample
12 messages
Active dates
4 UTC dates
Estimated median S/N
-9 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 4.

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 JH0GHZ in decoded directed-looking exchanges:

Most frequent locator attributed to JH0GHZ

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
PM85 · 5 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,586 km (approx.)
Last such locator decoded
2026-10-29 20:30 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 UTCBandJH0GHZ S/NCounterpartCounterpart S/NMsgsCapture
10-29 20:30 160m -22 / -6 OH0Z -14 / - 3 ✓ Closing observed
10-29 20:28 160m - / -21 EW4M +15 / - 7 ✓ Closing fragment
10-29 20:25 160m - / - OM0RX -4 / - 4 Partial capture
10-29 20:16 160m - / -19 IW4AOT -3 / - 4 ✓ Closing fragment
10-29 20:15 160m - / -13 ON7NQ 0 / - 3 ✓ Closing fragment
10-29 20:13 160m - / -20 UT7UA 0 / - 6 ✓ Closing fragment
10-29 20:13 160m - / - YO3APJ +6 / - 8 Partial capture
10-29 20:12 160m - / -8 LX1JX -6 / - 2 ✓ Closing fragment
10-28 21:21 160m - / -10 IZ8ESX -4 / - 2 ✓ Closing fragment
10-28 20:21 160m - / - F5UKW 0 / - 3 ✓ Closing fragment
10-28 20:21 160m - / -16 UR4LRG +2 / - 5 ✓ Closing fragment
10-28 20:19 160m - / -16 E73S +7 / - 2 ✓ Closing fragment
10-24 21:14 160m - / -18 IZ8FWN +2 / - 2 ✓ Closing fragment
10-16 20:23 160m - / -11 OH5KNL 0 / - 3 Partial capture
10-16 20:17 160m - / - 9A2RD -6 / - 4 Partial capture
10-16 20:16 160m - / -11 OH5KNL +3 / - 4 Partial capture
10-15 20:56 80m - / - SP9LCW +10 / - 2 Partial capture
10-15 20:55 80m -5 / - EA8DO - / -19 3 ✓ Closing fragment
10-15 20:27 160m - / - SP3BPU +16 / - 2 Partial capture
09-23 20:30 80m - / -14 UX1AA +6 / - 10 Partial capture
09-23 20:27 80m - / -10 CN8WK -4 / - 2 ✓ Closing fragment
09-23 20:25 80m - / - UX1AA +3 / - 3 Partial capture
08-30 17:00 80m - / -15 YO7CFD +18 / - 5 ✓ Closing fragment
08-19 21:08 20m -10 / - OK1SI - / -15 2 ✓ Closing fragment
08-19 21:07 20m -9 / - I8OHQ -10 / -9 3 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
202515  -3 1502  JH0GHZ OM0RX JN88 (x4)
202715  -1 1952  JH0GHZ SP8VJV KN09
202845 +19 2605  JH0GHZ EW4M KO23 (x2)
203000 -22 1100  OH0Z JH0GHZ PM85
203015 -14 1359  JH0GHZ OH0Z -06 (x2)
203115 +12 2605  JH0GHZ EW4M KO23 (x5)
80m 
UTC    dB Audio  Message
203115  +7 2097  JH0GHZ UX1AA R-14 (x8)
205500  -6 2721  EA8DO JH0GHZ PM85 (x3)
205615 +16 2796  JH0GHZ SP9LCW JO90 (x2)
211715 -12 2851  Z33PB JH0GHZ PM85 (x2)
20m 
UTC    dB Audio  Message
210545  -6 2720  EP2AES JH0GHZ PM85
210715  -9 2720  I8OHQ JH0GHZ R-09
210730 -10  285  JH0GHZ I8OHQ RR73
210745  -9 2719  I8OHQ JH0GHZ 73
210815  -9 2720  OK1SI JH0GHZ -15 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee