F4ISR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Locator transmitted in a decoded message: JO10

Receiver-side FT8 activity involving F4ISR, decoded by SO8OO in southeastern Poland. 688 related FT8 messages, 201 CQ messages, observed on 160m, 80m, 60m, 40m, 20m, 10m, across 38 UTC dates. Heard between 2026-05-13 and 2026-08-10.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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

Overview

688

Related messages

201

CQ messages

UTC dates heard

-5 dB

Mean decoder S/N

Bands

80m 20m 60m 40m 10m 160m

First seen: 2026-05-13
Last seen: 2026-08-10 19:22 UTC

Frequent QSO partners observed at SO8OO

Stations F4ISR worked most often, as logged from our receiver:

HA7TM · Hungary ×2 F1IQH · France ×2 DF6DBF · Fed. Rep. of Germany ×2 UA4FKT · European Russia ×2 HB9HFR · Switzerland ×2 ON4MAP · Belgium ×2 DL9KM · Fed. Rep. of Germany ×2 DL3RL · Fed. Rep. of Germany ×2 DL2YMG · Fed. Rep. of Germany ×2 OM1AGE/P · Slovak Republic BI4XDT · China SP4MSY · Poland

Activity Heatmap

Locator transmitted by F4ISR

Approximate centre of JO10, decoded 2026-08-10 21:21 UTC. A transmitted locator is not proof of the operator's permanent location.

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 UTC	Band	F4ISR S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-10 21:21	60m	-18 / -	DL2YMG	-12 / -	4	✓ Closing observed
08-10 21:10	60m	-18 / -4	EA4GA	-10 / -	3	Partial capture
08-10 21:07	60m	- / -5	DL1FLW	-8 / -	2	✓ Closing fragment
08-10 21:05	60m	-16 / +1	F6BTP	-12 / +10	4	✓ Full exchange observed
08-10 21:05	60m	-16 / -1	OM1AGE/P	+1 / -9	7	✓ Full exchange observed
08-10 21:00	80m	-10 / -3	DL9KM	-6 / -5	7	✓ Full exchange observed
08-10 21:00	80m	-12 / -3	G8OO	-9 / -	5	✓ Full exchange observed
08-10 21:00	80m	-14 / -	GW3TYI	- / +6	2	✓ Closing fragment
08-10 20:58	80m	-13 / -	DO5HOK	-2 / -	4	✓ Closing observed
08-10 20:56	80m	-14 / +2	DL2YMG	-5 / +10	5	✓ Full exchange observed
08-10 20:53	80m	-16 / -9	9A5E	+9 / -	5	✓ Closing observed
08-10 20:52	80m	-12 / -18	DO9BAU	+5 / -	5	✓ Closing observed
08-10 20:51	80m	-12 / -14	HB3YOY	-8 / +8	5	✓ Full exchange observed
08-10 10:10	20m	-23 / -	WB2BIN	- / -17	3	✓ Closing fragment
08-09 21:01	20m	-6 / -	JE1FQV	- / -	2	Partial capture
08-09 20:35	20m	-14 / -	TA3F	- / -6	2	Partial capture
08-09 20:30	20m	- / -22	EA5HM	-12 / -	4	Partial capture
08-09 20:30	20m	-12 / -	UA3VVA	-20 / -	2	✓ Closing observed
08-06 20:41	20m	- / -16	UB3KEH	-14 / -	4	✓ Closing fragment
08-06 20:33	20m	- / -15	JJ2QWN	-12 / -	4	✓ Closing fragment
08-06 20:27	20m	-17 / -	BG7BMG	- / -	2	Partial capture
08-04 21:03	80m	-6 / -11	LZ2VQ	-5 / -20	4	Partial capture
08-04 21:02	80m	-5 / -	TC3CT	- / -	2	Partial capture
08-04 20:57	80m	-20 / -11	DM8ET	-5 / +3	5	Partial capture
08-04 20:56	80m	- / -9	HA7TM	+20 / -	3	✓ Closing fragment
08-04 20:43	160m	- / -14	SP9UPH	-6 / -	3	✓ Closing fragment
08-04 20:38	160m	- / -11	SP3PLD	-3 / -	4	✓ Closing fragment
08-04 20:37	160m	- / -4	LA6YEA	-16 / -	2	✓ Closing fragment
08-04 20:34	160m	- / -14	SQ2BXI	+12 / -	2	✓ Closing fragment
08-02 19:58	160m	-8 / -13	YO3AF	+3 / -23	10	✓ Full exchange observed
08-02 19:58	160m	-10 / -	PE1LDS	- / -12	2	Partial capture
08-02 19:55	160m	-7 / -1	IZ4TOA	+2 / -	5	✓ Closing observed
08-02 19:54	160m	-9 / -	R2EA	- / -	2	Partial capture
08-02 19:53	160m	-10 / -	G0WCW	- / -10	2	Partial capture
08-02 19:49	160m	-6 / -1	G4EZT	0 / +2	4	✓ Full exchange observed
08-02 19:46	160m	-10 / -23	SP2OSA	-19 / -18	8	✓ Full exchange observed
08-01 22:56	80m	+2 / -	R2EA	- / -	2	Partial capture
08-01 22:53	80m	0 / -	ZS6WAB	- / -	4	Partial capture
08-01 22:51	80m	-4 / -	R9SBQ	- / -	5	Partial capture
08-01 22:34	160m	-13 / +1	DO5OT	+2 / -1	4	✓ Full exchange observed
08-01 21:18	60m	-14 / -	TF1EIN	- / -	2	Partial capture
08-01 21:13	60m	-1 / +10	G7RTI	-7 / +6	7	✓ Full exchange observed
08-01 21:12	60m	-1 / -12	OM5JG	+2 / +3	6	✓ Full exchange observed
08-01 21:00	160m	- / -	RK3QA	-2 / -	2	Partial capture
08-01 20:54	160m	- / -5	OK2USM	-5 / -	3	✓ Closing fragment
07-31 23:39	160m	- / -	UT5ZC	-4 / -	3	Partial capture
07-31 21:42	60m	-16 / -9	SP4MSY	-3 / -2	4	✓ Full exchange observed
07-31 21:38	60m	-15 / -6	DF6DBF	-6 / +7	7	✓ Full exchange observed
07-31 21:27	160m	- / -15	UT5ZC	0 / -	2	✓ Closing fragment
07-31 20:47	160m	- / -15	OM2WQ	+1 / -	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
210630 -16 1185  OM1AGE/P F4ISR -09
210645  +0 2583  F4ISR OM1AGE/P R-01
210700 -17 1185  OM1AGE/P F4ISR RR73
210715  +3 2583  F4ISR OM1AGE/P 73
210745  -8 1185  F4ISR DL1FLW R-05 (x2)
211000 -18 1185  EA4GA F4ISR JO10 (x2)
211115 -10  628  F4ISR EA4GA -04
212030 -20 1206  CQ F4ISR JO10                         a1 (x2)
212115 -12 2075  F4ISR DL2YMG JO31
212130 -17 1205  DL2YMG F4ISR +12 (x2)
212215 -13 2075  F4ISR DL2YMG 73

80m

UTC    dB Audio  Message
205915  -1  809  F4ISR DO5HOK 73
210000 -15 1152  GW3TYI F4ISR +06 (x2)
210045  -9 1001  F4ISR G8OO JO02
210045  -4 1386  F4ISR DL9KM JN68
210100 -13 1152  G8OO F4ISR +14
210115  -5 1386  F4ISR DL9KM JN68
210115  -8 1002  F4ISR G8OO R-03
210130 -12 1152  G8OO F4ISR RR73
210145  -7 1386  F4ISR DL9KM JN68
210145  -9 1002  F4ISR G8OO 73
210200 -12 1152  DL9KM F4ISR -05
210215  -5 1385  F4ISR DL9KM R-03
210230  -8 1152  DL9KM F4ISR RR73
210245  -7 1385  F4ISR DL9KM 73

20m

UTC    dB Audio  Message
203015 -14 1692  F4ISR EA5HM IM99
203015 -20 1203  F4ISR UA3VVA LO06
203100 -12  668  UA3VVA F4ISR RR73
203115  -8 1692  F4ISR EA5HM IM99 (x3)
203500 -15 2527  CQ F4ISR JO10                         a1
203530 -15 2528  TA3F F4ISR -06 (x2)
204900  -7 2877  CQ F4ISR JO10
210145  -6 2877  JE1FQV F4ISR JO10 (x2)
101045 -22 1789  WB2BIN F4ISR R-17 (x3)

160m

UTC    dB Audio  Message
200015  -8 2418  YO3AF F4ISR RRR
200030  +5 1243  F4ISR YO3AF 73
200045 -10 2419  YO3AF F4ISR RRR (x2)
203400 +12  296  F4ISR SQ2BXI -14 (x2)
203700 -17 1737  F4ISR LA6YEA -04 (x2)
203800  -2  615  F4ISR SP3PLD JO72 (x4)
204300  -3 2095  F4ISR SP9UPH JO90 (x3)

40m

UTC    dB Audio  Message
212115  -6 2754  CQ F4ISR JO10 (x3)
212230  -2 2754  F4ISR RN6MA -05
212245  -6 2754  RN6MA F4ISR R-09
212300  -3 2754  F4ISR RN6MA RR73
212315  -2 2754  RN6MA F4ISR 73
204830 -22 1951  F4ISR IS0/IK2YCW R+07
205000 -10 1811  F4ISR DL9KM JN68 (x2)
205045 -13 2558  DL9KM F4ISR RR73
205100 -14 1811  F4ISR DL9KM 73
205145 -10 2558  F4NKF F4ISR RR73
205915 -19 2233  IT9ACJ F4ISR JO10 (x2)

10m

UTC    dB Audio  Message
201245  +1 2571  CQ F4ISR JO10 (x5)
201545  -3 2571  CX1AR F4ISR JO10
201645  +4 2571  CA2VJM F4ISR -18 (x2)
202345  -2  495  CQ F4ISR JO10 (x7)

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.