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Understanding Noise in Telecommunication Systems
This article About Noise offers a clear, non-mathematical explanation of noise in telecommunications, making ... - Listed in Technical Reference/Receivers
K1USN Slow Speed Test
0000Z-0100Z, Mar 17
ICWC Medium Speed Test
1300Z-1400Z, Mar 17
OK1WC Memorial (MWC)
1630Z-1729Z, Mar 17
Bucharest Digital Contest
1800Z-2059Z, Mar 17
ICWC Medium Speed Test
1900Z-2000Z, Mar 17
RSGB FT4 Contest
2000Z-2200Z, Mar 17
Bahamas: Mar 9-20, 2025 -- C6AJB -- QSL via: LoTW
Mar 9-20, 2025 --
Bahamas --
C6AJB --
QSL: LoTW --
Source: MM0NDX (Mar 9, 2025) --
By KJ4LJB fm Rock Sound, Eleuthera I (IOTA NA-001); 80-10m; SSB FT8; holiday style operation
Guyana: Mar 11-Apr 25, 2025 -- 8R1TM -- QSL via: LoTW
Mar 11-Apr 25, 2025 --
Guyana --
8R1TM --
QSL: LoTW --
Source: MM0NDX (Feb 23, 2025) --
By PY1SAD fm Georgetown (GJ06vs); HF; CW SSB + digital; 100w; QSL via PY1SAD direct
Fiji: Mar 16-27, 2025 -- 3D2TWO -- QSL via: TBA
Mar 16-27, 2025 --
Fiji --
3D2TWO --
QSL: TBA --
Source: TDDX (Mar 10, 2025) --
By VK3TWO; 40-6m; SSB FT8; 10w; EFHW, vertical
Antigua and Barbuda: Mar 25-Apr 2, 2025 -- V26K -- QSL via: LoTW
Mar 25-Apr 2, 2025 --
Antigua and Barbuda --
V26K --
QSL: LoTW --
Source: AA3B (Mar 18, 2025) --
By AA3B; 80-6m; CW SSB FT8 FT4; QRV for CQ WPX SSB (SOAB); QSL via Club Log OQRS
Saba and St Eustatius: Oct 17-29, 2025 -- PJ6Y -- QSL via: LoTW
Oct 17-29, 2025 --
Saba and St Eustatius --
PJ6Y --
QSL: LoTW --
Source: MM0NDX (Mar 18, 2025) --
By W6IZT W2FQ NM1Y and YOTA team fm Saba I; 160-6m, incl 60m; CW SSB FT8; QRV for CQWW DX SSB; see Web for QSL details
OY – Faroe Islands DXpedition
[INFO by Jim, WB2REM] – Join us for an exciting DXpedition to the stunning Faroe Islands from June 1 to June 10, 2025! Our team will be active under the callsigns OY6FRA, OY6A, OY/W9MK, and OY/K4LT. We’ll be operating on 6 through 160 meters, utilizing FT8/FT4, SSB, and CW modes to connect with hams worldwide. […]
Solar Report 1630 18 Mar 2025
Solar Flux: 204 | Ap: 16 | Kp 3.33
Observed Space Weather 1630 18 Mar 2025
Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.
Forecast Space Weather 1630 18 Mar 2025
No space weather storms are predicted for the next 24 hours.
Flares 1630 18 Mar 2025
(0000 UTC) 6h hi M1.0(1925Z 03/17) 24h hi M1.0(1925Z 03/17)
Sunspots 1630 18 Mar 2025
SSN: 189 (03/17/2025)
Solar Wind 1630 18 Mar 2025
Solar Wind: 486 km/s @ 7.0 protons/cm3
Bz: 2025 Mar 18 1626Z at -0.5 nT
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