DL5ARM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO50

Receiver-side FT8 activity involving DL5ARM, decoded by SO8OO in southeastern Poland. 700 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 51 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 700 FT8 messages attributed to DL5ARM as the transmitting token by decoded message structure across 51 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (69%), followed by 80 m (15%) and 20 m (12%). The busiest six-hour window was 04:00-10:00 UTC, containing 44% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -5 dB.

Overview

700

Messages attributed

UTC dates decoded

178

Active 15-min windows

-5 dB

Estimated median S/N

Bands

160m · 15 80m · 107 40m · 486 20m · 82 10m · 10

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 10:28 UTC

Observed FT8 message patterns

Attributed sample: 700 messages
Active dates: 51 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -17 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 90, moderate (-15 to -9 dB) 154, strong (≥ -8 dB) 456.

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 DL5ARM in decoded directed-looking exchanges:

IQ0VT · Italy ×3 SM2LIY · Sweden CR7BUJ · Portugal IQ6PE · Italy LU1FIV · Argentina VK5MN · Australia WA4FU · United States IQ0OS · Italy IQ4FE · Italy IQ9BF · Sicily PA2RO · Netherlands IQ3GO · Italy

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 DL5ARM

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: JO50 · 459 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 770 km (approx.)
Last such locator decoded: 2026-09-20 10:27 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	DL5ARM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 10:27	40m	-15 / -1	II6IALU	-23 / 0	3	Partial capture
09-20 10:26	40m	-8 / -8	SO100PKP	-9 / +10	3	Partial capture
09-20 08:49	40m	-13 / -1	II4IANT	-14 / +4	2	Partial capture
09-20 06:44	40m	+2 / -	II9IAGM	- / -8	4	Partial capture
09-20 06:41	40m	+1 / -3	II4IANT	-19 / -8	4	Partial capture
09-20 06:37	40m	+2 / -	II4IANT	- / -	2	Partial capture
09-19 13:29	40m	-10 / +6	HF100PKP	-4 / -12	3	Partial capture
09-19 13:27	40m	-8 / +7	SP100PKP	-9 / -10	3	Partial capture
09-19 11:49	40m	-10 / 0	HF100PKP	-16 / -	3	Partial capture
09-17 08:51	40m	-9 / -	SN40KZE	- / -10	3	Partial capture
09-17 08:49	40m	-6 / -	II8IHBC	- / -9	3	Partial capture
09-17 08:48	40m	-13 / +5	SP100PKP	-8 / +8	3	Partial capture
09-17 08:46	40m	- / -	DL6UM	0 / -	4	Partial capture
09-17 08:46	40m	- / -	OE8PIT	-8 / -	2	Partial capture
09-17 08:45	40m	-12 / -7	II7IABB	-10 / +3	2	Partial capture
09-16 21:11	80m	-14 / -17	II8IHBC	-1 / +7	3	Partial capture
09-16 20:53	80m	-11 / -	TK/4O7CC	- / -	2	Partial capture
09-16 16:10	40m	-7 / -	VA3QSL/P	- / -13	2	Partial capture
09-16 09:33	40m	-12 / -	WB8YJF/NA67	- / -6	2	Partial capture
09-15 21:35	80m	- / -	DO9BAU	+7 / -	12	Partial capture
09-15 21:24	80m	-14 / -	EM70WWW	- / 0	2	Partial capture
09-15 21:23	80m	-18 / -12	II8IHBC	-2 / -	2	Partial capture
09-15 16:05	40m	+7 / -	TK/4O7CC	- / -	5	Partial capture
09-15 16:02	40m	-1 / -	II9IAGM	- / -	2	Partial capture
09-15 16:00	40m	- / -	DL0HAM	+7 / -	2	Partial capture
09-15 06:03	40m	+6 / -	SM/DB9LG	- / -10	3	Partial capture
09-15 06:01	40m	+2 / -	SO100PKP	- / -7	2	Partial capture
09-14 20:17	80m	-13 / -	II8IHBC	- / -8	3	Partial capture
09-14 20:14	80m	-22 / -	II6IALU	- / -	2	Partial capture
09-14 15:26	40m	-2 / -	UB3BDJ/6	- / -14	2	Partial capture
09-13 07:25	40m	-4 / -	WB8YJF/NA67	- / -	5	Partial capture
09-13 07:19	40m	-3 / +10	YO3FVR/P	+9 / -	5	Partial capture
09-12 21:08	40m	+2 / -	SM/DB9LG	- / -	2	Partial capture
09-12 21:02	80m	-15 / -14	SP100PKP	-1 / -	2	Partial capture
09-12 21:00	80m	-9 / -	R5BM/M	- / -	2	Partial capture
09-12 20:56	160m	- / -	OK1DXR	-1 / -	9	Partial capture
09-12 20:55	160m	-10 / -	RA7E/P	- / -	2	Partial capture
09-12 06:55	40m	-6 / -	II8IHBC	- / -	4	Partial capture
09-12 06:53	40m	-5 / +7	HF100PKP	-2 / -	3	Partial capture
09-12 06:50	40m	-1 / -	II9IAGM	- / -13	3	Partial capture
09-12 06:01	80m	-18 / -22	HF100PKP	-8 / -1	5	Partial capture
09-12 05:56	80m	-14 / -	HF100PKP	- / -	2	Partial capture
09-11 12:10	40m	-15 / -	HF100PKP	+4 / -	3	Partial capture
09-11 07:40	40m	- / +10	IK4TVP	-14 / -	2	Partial capture
09-11 07:38	40m	- / -	IK2ZJR	-6 / -	6	Partial capture
09-11 07:37	40m	+2 / -	9A/DK9RC	- / +4	2	Partial capture
09-11 07:35	40m	0 / -	OZ/OO4O	- / -	2	Partial capture
09-10 17:50	80m	-13 / -	SN40KZE	- / -10	2	Partial capture
09-10 15:07	40m	- / -	S51PV	-11 / -	7	Partial capture
09-10 15:06	40m	-6 / -	SP100PKP	- / +8	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
064345  +1 1332  R3RRC/P DL5ARM R-08
064415  +2 1332  <II9IAGM> DL5ARM R-08 (x4)
084915 -14 2363  DL5ARM II4IANT -01
084930 -13 2363  II4IANT DL5ARM R+04
085045  +3 2363  DL5ARM UT4PA KO20
102645  -9 2104  SO100PKP DL5ARM JO50
102700  -9 2104  DL5ARM SO100PKP -08
102715  -7 2104  SO100PKP DL5ARM R+10
102730 -14 2104  DL5ARM RR73; SP2LOL <...> +08
102745 -15 1803  II6IALU DL5ARM JO50
102800 -23 1803  DL5ARM II6IALU -01
102815 -15 1803  II6IALU DL5ARM R+00

80m

UTC    dB Audio  Message
213930  +8 2501  DL5ARM DO9BAU JO62 (x4)
205015 -20 1267  SN100PKP DL5ARM JO50
205315  -7 1866  TK/4O7CC DL5ARM JO50 (x2)
205630 -21 1599  DL5ARM XX6PHZ/R -16
211100  -1 2213  DL5ARM II8IHBC -17
211145 -21 2212  II8IHBC DL5ARM R+07 (x2)
171545 -20 1808  DL/AD2LX DL5ARM R-02
180615 -15 1781  R3RRC/P DL5ARM JO50
181030  -4 2308  DL5ARM II8IHBC -13
181230  +6 1677  DL5ARM DJ0FX JN67

160m

UTC    dB Audio  Message
204045 -19 2047  SN100PKP DL5ARM JO50 (x2)
205515 -11 1199  RA7E/P DL5ARM JO50 (x2)
205630  -4 1295  DL5ARM OK1DXR JO60 (x9)
194300  -8 1791  DL5ARM SN100PKP -09
194330 -17 1791  DL5ARM RR73; SP1RKT <...> -08

10m

UTC    dB Audio  Message
125245  -9 2688  DL5ARM SM2LIY KP04 (x3)
125345  -9 2197  DL5ARM DJ0MAB JN49 (x2)
125445 -10 2688  DL5ARM SM2LIY KP04
125445 -17 2197  DL5ARM DJ0MAB JN49
100900 -14  946  DL5ARM <...> -04

20m

UTC    dB Audio  Message
083130  +9 2105  DL5ARM II7MGBT -08
084530 -15 2448  DL5ARM F5PBG IN78 (x3)
093345  -5 2121  DL5ARM IR7MGGC -01 (x2)
074245  +3 2651  DL5ARM YO4NT -06 (x2)
105330 -19 1433  <...> DL5ARM JO50
105345  -1 1046  DL5ARM II7MGLE -05
062645  -8 2104  DL5ARM II7MGBT -04
062845  -7 2103  DL5ARM RK4FF -11
130515 -14 1870  DL5ARM <...> -15 (x2)
115630  -4 1092  DL5ARM RR73; IU3VHR <...> -10

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.

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