HF9D — 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: Poland Most frequent locator attributed to this token: JO90

Receiver-side FT8 activity involving HF9D, decoded by SO8OO in southeastern Poland. 899 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 35 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-19.

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 899 FT8 messages attributed to HF9D as the transmitting token by decoded message structure across 35 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (81%), followed by 60 m (16%) and 40 m (3%). Most decodes (69%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (85%); the estimated median was +7.8 dB.

Overview

899

Messages attributed

UTC dates decoded

102

Active 15-min windows

+7.8 dB

Estimated median S/N

Bands

160m · 4 80m · 726 60m · 141 40m · 27 20m · 1

First attributed message: 2026-06-08
Last attributed message: 2026-10-19 16:21 UTC

Observed FT8 message patterns

Attributed sample: 899 messages
Active dates: 35 UTC dates
Estimated median S/N: +7.8 dB
Estimated 10th-90th percentile: -12.2 to +17 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 54, moderate (-15 to -9 dB) 82, strong (≥ -8 dB) 763.

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 HF9D in decoded directed-looking exchanges:

F1PBZ · France ×2 ON4MDW · Belgium ×2 YO4BEW · Romania ×2 DF8RU · Fed. Rep. of Germany ×2 DO8JB · Fed. Rep. of Germany ×2 OE5ABL · Austria ×2 OH8JP · Finland ×2 OK1SI · Czech Republic ×2 SA3LEN · Sweden ×2 CR7BRV · Portugal CS7BPG · Portugal CT7AUT · Portugal

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 HF9D

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: JO90 · 515 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 208 km (approx.)
Last such locator decoded: 2026-10-19 16:20 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 UTC	Band	HF9D S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 19:24	60m	- / -1	PA4PA	+14 / -	2	✓ Closing fragment
10-22 18:59	60m	- / -20	G4WGE	-13 / -	2	✓ Closing fragment
10-22 18:56	60m	- / -17	HB9TLL	-6 / -	2	✓ Closing fragment
10-19 17:00	60m	- / -1	SP3DTB	+2 / -	2	✓ Closing fragment
10-19 16:20	60m	-12 / -3	OE3RAP	0 / -11	4	✓ Full exchange observed
10-19 16:14	60m	- / -10	YO5IB	-4 / -	3	✓ Closing fragment
10-19 16:14	60m	- / -16	DG1KFR	-8 / -	3	✓ Closing fragment
10-19 16:09	60m	- / +6	SP2EWQ	+8 / -	3	✓ Closing fragment
10-19 16:06	60m	-14 / -10	OH5XX	-3 / +1	4	✓ Full exchange observed
10-18 17:26	80m	+10 / +4	OE3KJO	+4 / +6	5	✓ Full exchange observed
10-18 17:21	60m	- / -2	OH7GGX	0 / -	2	✓ Closing fragment
10-18 17:17	60m	- / -16	S57MPU	+14 / -	3	✓ Closing fragment
10-18 17:13	60m	- / -8	ON1EHF	-6 / -	4	✓ Closing fragment
10-18 17:09	60m	- / -14	YO4BEW	-14 / -	2	✓ Closing fragment
10-18 07:04	80m	+11 / -8	DC7CM	-17 / -14	12	✓ Full exchange observed
10-18 07:03	80m	+14 / -8	SP5EXA	+20 / -	5	✓ Full exchange observed
10-18 07:03	80m	+15 / -	DO1MDE	-14 / -24	5	Partial capture
10-17 04:57	80m	+13 / -	E79KO	- / -	2	Partial capture
10-17 04:45	80m	+7 / -	G4XEX	- / -	2	Partial capture
10-17 04:41	80m	-2 / -	M7NQB	- / -	2	Partial capture
10-17 04:39	80m	+7 / +5	SM5CBM	+16 / +1	5	✓ Full exchange observed
10-17 04:37	80m	+6 / -1	SX37VER	-4 / -6	3	Partial capture
10-17 04:33	80m	+8 / -4	OE8JOTA	-11 / -20	6	Partial capture
10-17 04:32	80m	+8 / -	PJ4/DH8BQA	- / -	2	Partial capture
10-17 04:26	80m	+20 / -	OH2MDN	-2 / -15	4	✓ Closing observed
10-17 04:23	80m	+7 / +1	LY5A	+11 / +4	5	✓ Full exchange observed
10-17 04:15	60m	- / -13	G0ABI	0 / -	2	✓ Closing fragment
10-16 05:33	80m	+14 / -	SP2MGR/P	- / -5	3	Partial capture
10-16 05:31	80m	+12 / -10	OH6NIO	-5 / -14	5	✓ Full exchange observed
10-16 05:30	80m	+13 / -15	PA2PF	-18 / -18	5	✓ Full exchange observed
10-16 05:26	80m	+13 / -	HB9ALO	- / -	6	Partial capture
10-16 05:24	80m	+16 / -3	ON7PR	-20 / -14	5	✓ Full exchange observed
10-16 05:20	80m	+15 / -	HB9ALO	- / -	5	Partial capture
10-16 05:06	80m	+3 / -10	EA8DO	-19 / -17	5	✓ Full exchange observed
10-16 05:02	80m	- / -	US7KC	-10 / -	2	Partial capture
10-16 05:00	80m	+4 / -8	PA1TW	-16 / -11	5	✓ Full exchange observed
10-16 04:38	60m	- / -14	YO4BEW	-1 / -	4	✓ Closing fragment
10-16 04:21	80m	+5 / -	LX1ER	- / -	3	Partial capture
10-16 04:18	80m	-2 / +1	DO1OAS	+10 / -9	5	✓ Full exchange observed
10-16 04:17	80m	+2 / +2	OE5DML	+7 / +2	5	✓ Full exchange observed
10-16 04:15	80m	+12 / -	G0HSP	- / -13	3	✓ Closing fragment
10-16 04:12	80m	-11 / -	G6PWS	- / -	2	✓ Closing fragment
10-16 04:10	80m	-11 / -8	GU4WRP	+3 / -12	4	Partial capture
10-16 04:09	80m	-12 / -17	M9DNC	-16 / -	2	Partial capture
10-12 05:54	60m	-16 / -	M0DSK	- / -	5	Partial capture
10-12 05:42	80m	+6 / -	OE6/HB9DGR	- / -	4	Partial capture
10-12 05:35	80m	+14 / -	9A5TW	- / -	2	Partial capture
10-12 05:30	80m	+1 / -	F4NGK	- / -	3	Partial capture
10-12 05:27	80m	-3 / -24	EA4GOY	-4 / -13	9	✓ Full exchange observed
10-12 05:25	80m	+7 / -3	GW0KRL	-6 / -12	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
161600  -5 1447  HF9D YO5IB R-10 (x2)
162030 -13  601  OE3RAP HF9D JO90
162045  +0 1327  HF9D OE3RAP -03
162100 -11  601  OE3RAP HF9D R-11
162115  +1 1327  HF9D OE3RAP RR73
170030  +2  234  HF9D SP3DTB -01 (x2)
185600  -7 1468  HF9D HB9TLL -17 (x2)
185930 -13  812  HF9D G4WGE -20 (x2)
190245 -13 1749  HF9D OE9HGV -07
192445 +16  337  HF9D PA4PA -01 (x2)

80m

UTC    dB Audio  Message
070530 -16 1999  HF9D DC7CM JO62 (x6)
070815  +9  661  DC7CM HF9D -14
070830 -14 1999  HF9D DC7CM R-08
070845 +13  684  DC7CM HF9D RR73
070900 -14 1999  HF9D DC7CM 73
172645 +14  545  OE3KJO HF9D JO90
172700  +5 1695  HF9D OE3KJO +04
172715  +9 1695  OE3KJO HF9D R+06
172730  +4 1695  HF9D OE3KJO RR73
172745  +6 1695  OE3KJO HF9D 73

10m

UTC    dB Audio  Message
144315  -4 1253  HF9D G8OO JO02 (x3)
132330  -3 2809  HF9D <...> -05
143345  +3  950  HF9D SV7BAY +18 (x2)
142330  +2  782  HF9D CR7BRV +00 (x2)
142430 -24 1565  HF9D CS7BPG IN51 (x2)
143215  -5 1505  HF9D CT7AUT +10 (x2)

40m

UTC    dB Audio  Message
065915 -10 2519  GB0SL HF9D R-17 (x2)
070100  -9 2519  ON4DN HF9D JO90
070115  -8  333  HF9D ON4DN -16
070130  -9 2519  ON4DN HF9D R-13 (x2)
071115 -14 2519  PD5URK HF9D JO90 (x2)
175330  -7 1224  <...> HF9D JO90
175445  +4 1606  HF9D OE/DG7CF -11 (x2)
175630  -7 2263  JG3LGD HF9D JO90
175700  -4 2263  JH1CTV HF9D JO90
082700 -20 2119  HF9D DL7PIA +08
083200  -3  888  HF9D IN3IBW RR73

160m

UTC    dB Audio  Message
181145 -11 1112  CQ HF9D JO90 (x4)

20m

UTC    dB Audio  Message
152630  +9 2665  HF9D 9A170NT +13
133430 -11 1646  HF9D DB1BAC/P +06
114230  -8  953  HF9D M9ORB 73
114615 -15 1078  HF9D M0PEI -03 (x2)
110300 -13 1085  HF9D M9LCB -01 (x2)
110400  -3 2321  HF9D F5MOO JN07
110430 -21 1818  HF9D R2WT +00
110430  -2 2321  HF9D F5MOO JN07
110900 +13  528  HF9D M9YLR RR73
111000  +6 2417  HF9D F5MOO JN07 (x3)
113600 -19 1544  HF9D G4YTW -14

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

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