JA7ZF — FT8 station from Japan

Japan Grid: JN93

Amateur radio station JA7ZF operating from Japan (grid square JN93). 135 FT8 spots received at SO8OO WebSDR, active on 40m, 20m, 10m, over 24 days, best SNR +32 dB. Heard between 2026-04-21 and 2026-06-28.

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Overview

135
Total spots
0
CQ calls
24
Days active
-2 dB
Avg SNR

Bands

20m 40m 10m
First seen: 2026-04-21
Last seen: 2026-06-28 17:59 UTC

Frequent QSO partners observed at SO8OO

Stations JA7ZF worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJA7ZFPartnerPartner SNRMsgs
06-28 19:45 20m - / -15 LU2AHD -13 / - 2 ✓ Confirmed
06-28 19:44 20m 0 / -14 S55A -12 / -5 4 ✓ Complete
06-24 20:30 20m +9 / -3 UT5MD -11 / -5 6 ✓ Complete
06-15 21:02 20m -12 / - RA4FUT -18 / -8 5 ✓ Verified
06-11 21:42 20m -15 / - BG2FYO - / +3 2 ✓ Confirmed
06-11 21:39 20m -16 / - BH4HGH - / - 2 ✓ Confirmed
06-10 19:45 20m -12 / - G0GOO - / - 3 Partial
06-10 19:40 20m -5 / -8 OD5UI -3 / -7 6 ✓ Complete
06-04 20:05 20m - / -11 OK1UOZ +3 / - 2 ✓ Confirmed
06-04 19:57 20m -10 / - HB9EKJ - / - 3 Partial
06-04 19:56 20m - / -9 OJ0Z +2 / - 11 Partial
06-04 19:53 20m +10 / - IZ2DPX - / - 3 Partial
06-04 19:52 20m - / - OJ0Z 0 / - 2 Partial
06-04 19:41 20m - / - OJ0Z -9 / - 9 Partial
05-31 20:31 20m - / - OJ0Z -3 / - 3 Partial
05-31 20:16 20m +2 / - EA5IDA - / - 3 Partial
05-31 20:13 20m - / - OH0TS -2 / - 7 Partial
05-29 10:47 10m -9 / - 7Q9PTP - / -2 2 ✓ Confirmed
05-28 20:30 20m - / - EP2AES -2 / - 3 Partial
05-27 20:10 20m - / - ZD8KX -4 / - 4 Partial
05-26 19:46 40m -12 / - RV3H - / - 2 Partial
05-26 19:44 40m -2 / - R2ZDD - / - 2 Partial
05-24 20:35 20m -1 / - <...> -7 / -3 2 Partial
05-23 20:44 20m - / - GB9SOS -5 / - 2 Partial
05-23 20:40 20m - / - GB9SOS -7 / - 3 Partial
05-20 07:07 20m -14 / - UA3ZMQ - / - 2 Partial
05-20 07:03 20m - / -20 PD0DDA -2 / - 2 Partial
05-20 07:01 20m +17 / +1 PI4DX +4 / - 4 ✓ Verified
05-20 07:00 20m -22 / - PD0DDA - / - 2 Partial
05-20 06:59 20m - / - DL6NDN -2 / - 3 ✓ Confirmed
05-18 20:15 20m - / -16 IZ2JPN -4 / - 2 ✓ Confirmed
05-18 20:14 20m 0 / -8 IZ0ZIP -3 / -6 5 ✓ Complete
05-18 20:13 20m - / -14 SQ7OCJ -2 / - 2 ✓ Confirmed
05-18 20:10 20m - / -3 SP9UPH -4 / - 2 ✓ Confirmed
05-18 20:08 20m - / -12 OM1EI -6 / - 2 ✓ Confirmed
05-18 20:06 20m - / -24 OZ7CL -2 / - 3 ✓ Confirmed
05-18 19:51 40m +12 / - SX1FLY - / -10 2 ✓ Confirmed
05-17 20:39 20m - / - TL8BNW -8 / - 6 Partial
05-13 20:23 20m -14 / - IS0IYV - / -16 2 ✓ Confirmed
05-13 20:16 20m -4 / - OH4LBX - / -15 2 ✓ Confirmed
05-12 10:26 20m -6 / - G4XEX - / - 3 Partial
05-12 09:52 20m -1 / - PD2PE - / - 5 Partial
05-12 09:48 20m -4 / - HB9TIH - / - 4 Partial
05-12 09:47 20m -8 / - PD2PE - / - 2 Partial
05-12 09:47 20m -4 / - PE1OBL - / - 2 Partial
05-12 09:46 20m +30 / - ON6AA -23 / -1 4 ✓ Verified
05-12 09:45 20m +5 / - OH3CBN -24 / -7 3 Partial
05-11 19:58 20m -13 / - EA2ELX - / - 3 Partial
05-11 19:49 20m - / - <...> -12 / - 6 Partial
05-11 19:42 20m -2 / - EC3A - / -14 2 Partial

Station Log

20m 
UTC    dB  Freq  Message
203000 +12 2592  JA7ZF UT5MD KN69 (x3)
203245 -10  898  UT5MD JA7ZF R-03
203300  +6 2592  JA7ZF UT5MD RRR
203315 -12  898  UT5MD JA7ZF 73
194345 -12  872  BG3NQT JA7ZF 73
194400  -2  710  JA7ZF S55A -05
194415 -13  873  S55A JA7ZF R-14
194430  +2  710  JA7ZF S55A RR73
194445 -12  872  S55A JA7ZF 73
194545 -13  872  LU2AHD JA7ZF -15 (x2)
194715 -15  872  BG5CAH JA7ZF RR73
195930  -9  872  JA7ZF E77FN JN93
40m 
UTC    dB  Freq  Message
194300  -6 1752  JA7ZF UT6HN R-13 (x2)
194400 +13  783  JA7ZF R4FV LO22
190930 +12 1055  JA7ZF UR6EA -24 (x2)
200245 +11 1035  JA7ZF UR3CTU -07 (x2)
195100 +14  429  JA7ZF SX1FLY -10 (x2)
194400 -20 2413  JA7ZF RD4AAK -18
194430  -2 2810  JA7ZF R2ZDD KO80 (x2)
194600 -11 2675  JA7ZF RV3H KO85 (x2)
210845 -12 1880  JA7ZF UF5F R-03
10m 
UTC    dB  Freq  Message
104700 -11 2276  JA7ZF 7Q9PTP -02 (x2)

SNR History by Band