Contester and DXer
Joined March 2009
- Tweets 1,733
- Following 951
- Followers 1,433
- Likes 1,285
1,005 Photos and videos
Apr 29
"Beautiful 15m propagation this morning @ 05z! Band wide open across the Northern Hemisphere in the night. Even the difficult T31TT path from Kanton Island is coming through nicely. South America remains absent though — winter night-time MUF just isn't high enough to support it.
2
153
Apr 11
#JIDX 10:20Z and 21 MHz finally waking up! Hearing weak JA stations but strong asymmetry — I hear them much better than they hear me.
Likely sunset greyline effect: tilted ionosphere longer first hop from JA to CT, while my return path is normal multi-hop.
1
4
325
Apr 11
Not easy to work JIDX with poor conditions from Portugal.
CQ CQ on 14MHz long path at 08Z and only one QSO 7K4VPV.
On 21 MHz no one coming through, just JH6WDG. Very difficult QSO after many tries....
😟
3
15
728
José Nunes CT1BOH retweeted
Apr 9
Amazing! 🌕📡
To think we can also send a radio signal to the moon, it hits this surface and bounces back again. Crazy!
#Artemis
Photo Credit: NASA
1
3
20
720
Apr 9
Hacker, fraudster, special agent, DXpeditioner. The amazing story of Roman Stepanenko Vega. P5RS7, 1S0RR, XY0RR, 5A0RR.
Interesting video. In Russian. You need to select Russian subtitles and then enable automatic translation to English.
youtu.be/7aaVUWBhZ2s?si=K8g7… via @YouTube
1
3
809
José Nunes CT1BOH retweeted
Apr 2
The Artemis II crew are not strangers to amateur radio. 3 licensed hams are making the journey to the moon, 2 of those in the ARISS log with STEM contacts from the ISS. No ham radios are making this trip, but we're hopeful for the future. Source: shorturl.at/gHAD4
1
2
333
José Nunes CT1BOH retweeted
With @NASA’s #ArtemisII now in flight, its astronauts will be traveling beyond Earth’s protective magnetic shield on their journey around the moon, entering a region where #SpaceWeather can pose risks to their health and safety.
Forecasts from @NOAA’s @NWSSWPC will help keep them informed of potential dangers.
Learn more: bit.ly/4m3y7pj
![A diagram illustrating the moon’s orbit in relation to Earth’s magnetic field and magnetotail. The magnetotail extends away from the sun like a long, comet-shaped stream, formed by the solar wind. As it orbits Earth, the moon periodically passes through this region. Earth and the moon are not shown to scale. [Credit: NOAA]](https://venexa.site/media/HE5oalcWgAAMMbg.jpg)
ALT A diagram illustrating the moon’s orbit in relation to Earth’s magnetic field and magnetotail. The magnetotail extends away from the sun like a long, comet-shaped stream, formed by the solar wind. As it orbits Earth, the moon periodically passes through this region. Earth and the moon are not shown to scale. [Credit: NOAA]
10
166
633
32,180
Thought my QSO with “1A4F” was just an #AprilFoolsDay prank… 🤡📡
But not only did they reply — they even sent an eQSL! 😂
Commitment level: make the joke… and officially confirm it ✔️
Ham radio never disappoints 😎
DX4ever♥️
6
5
42
3,074
José Nunes CT1BOH retweeted
🚀 Just finished building WSPR dashboard designed specifically for antenna testing!Unlike standard maps, it calculates Normalized SNR ($SNR - Power$), allowing for fair comparisons between different power levels.
wsprlab.ok1cdj.com/
#hamradio #WSPR #Nextjs #AntennaTesting #SWL #RadioAmateur
2
6
20
1,007
Apr 1
1st April 4 fools
Apr 1
Just worked 1A4F on 14.090 FT8—no prior announcements anywhere. Legit?
2
198
Apr 1
Just worked 1A4F on 14.090 FT8—no prior announcements anywhere. Legit?
3
3
514
José Nunes CT1BOH retweeted
Mar 15
@yo3gek worked TX5EU on 14 MHz at 17:20 Short path. Very nice quiet location as we can see from the video but what is nice is the polar flutter of the TX5EU signal. Geometry of the path shows no absorption in D-layer, after sunrise in TX5EU, before the sun will kill the path
What can cause such high absorption in the D-layer on 20m but leaves the polar path unaffected? Proton flux? Worked them SP over north pole at 1720z (not getting into that region).
1
6
324
Mar 14
There are exotic QSOs and easy QSOs.
TX5EU CQ CQ with no takers on 28 MHz FT8
3
14
753
Mar 14
Some QSOs are more exotic than others. Just worked TX5EU on 14004.9 CW at 17Z. The exotic part is going via long path through the night side of Earth, in order to avoid the D-layer that makes the QSO via the short path impossible. He is coming S1 but not a very large pile-up...
1
24
1,231
Feb 20
Excellent article and explanation about FT2 by VU3DXR
FT2: The Fastest Digital Mode in Amateur Radio vu3dxr.in/ft2-the-fastest-di…
4
4
10
806
José Nunes CT1BOH retweeted
Feb 1
SH6 is a free contest log analyzer for ham radio operators. Upload your ADIF/Cabrillo log and instantly get clear stats.
Compare log with more than 1,2 million public contest logs.
No install, no signup, no ads - just open it and go s53m.com/SH6/ #hamradio #CQWW
3
28
65
3,522
José Nunes CT1BOH retweeted
Jan 31
Cool paper: SpaceX mapped the Appleton Anomaly using arc discharge detectors on Starlink satellites. Amateur radio operators have used those same plasma crests for Trans-Equatorial Propagation since the 1950s - 50 MHz signals hopping 5,000 km.
ieeexplore.ieee.org/document…
7
31
250
10,419
Jan 25
Rob Sherwood (NC0B) updated his RX performance table (DR Narrow Spaced @2 kHz). IC-7300 Mk2 scores 87 dB vs FTdx101D (110 dB) and FTdx10 (107 dB). A video comparing IC7800 vs IC7851 shows how a weak CW signal reappears as a strong nearby signal is shifted youtu.be/HI1zKYdZisA?si=0j7q…
5
869
Jan 24
Not going to happen (1) Probing grid JN18, first hop is 2000 km with weak backscatter. (2) 2000 km puts France out of reach for short path. (3) Poor conditions- JAs from PM grid not crossing 60° latitude needed for long path. (4) Can copy JA beacon long path via SA but not on 10M
Jan 23
I really enjoy this contest on 28 MHz, not because I can make a lot of QSOs, but because France is in the first skip hop zone from Portugal, so I can only get through via long path. Sometimes we hear a faint echo from signals arriving both short and long path.
1
4
688
Jan 23
I really enjoy this contest on 28 MHz, not because I can make a lot of QSOs, but because France is in the first skip hop zone from Portugal, so I can only get through via long path. Sometimes we hear a faint echo from signals arriving both short and long path.
Jan 23
We look forward to contacting you this weekend during the French #REF #CW #Contest.
And for the phone operators, we'll see you in a month, for #SSB part.
#FY5KE #HamRadio #CW4Ever
2
1
10
1,198