Saturday, 17 August 2024

2024 ARRL DX CW/PH Certificate

After a series of problems, the ARRL web has been restored and

ARRL contest certificates are now available for download.

In ARRL CW, I was able to contact with many stations, but I could not make JA top.

On the other hand, the PH score was not so good, but

I was able to get the top position in Asia.






Tuesday, 4 June 2024

Serious Noise to shortwave band

About a month ago, I began to notice noise in the shortwave band every day at irregular intervals. This time, I received the signal in AM mode and recorded the waveform using the IC-7610's audio scope.

Noise peaks can be observed almost every 100ms.

This noise is characterized by alternating occurrences and stops at intervals of several to 10 seconds, lasting several minutes in the shortest case and several tens of minutes in the longest case.











Monday, 13 May 2024

Antennas for fixed and field operation

Current antenna for fixed operations 













and Tri-band 2elements beam for field operations in adjustment.

Materials are converted from TA-33jr.




Saturday, 11 May 2024

2024 CQ WPX Contest SSB final results

The final results of the CQ WPX SSB held at the end of March are already available.

The tabulation process is getting faster.

I was able to top JA again this year in the 10m band 100W and under category.

The top Asian competitor was VR2T operated by VR2ZQZ and I was 2nd, not an easy win!

https://cqwpx.com/scoresph.htm



Monday, 6 May 2024

2023 CQ World Wide RTTY contest certificate

Just received 2023 WW RTTY Log check report,

lost three multipliers.

However, I was lucky enough to achieve an Asian record on 10m QRP.

Be able to check my original Log on the Web.

JA6WFM log





Tuesday, 9 April 2024

2024 WPX contest SSB raw score and posted a videos on Youtube

WPX contest SSB raw scores are now available. 

So far, I am leading among JA in the 10m band Lo power category, but in Asia, I am completely defeated by Hong Kong stations. It is hard to win when they are active participants.

I have posted a video on Youtube showing a scene of contest that I participated from Japan. 

They are audio only, but I would be happy if you could take a look at them.

See you again at the contest!

JA6WFM Hiro










Please visit Youtube
Please turn on subtitles and enjoy!
LOL!


Tuesday, 2 April 2024

2024 WPX Contest SSB on 10m band

 I participated in the WPX contest SSB 10m band with 100W.

Last year I made 800 QSOs, so this year I aimed for 1000 QSOs and 2 million points.

As a result, I achieved 1003 QSOs just before the end of the competition except for duplicates, but my score was a little short of 2 million points.

I did not expect the conditions to be as good as for North America in the morning, but I still made almost 200 QSOs, so that is good.

As for Europe, I was able to accumulate stations efficiently because of their smart calling.

It was also interesting to note that the area where the most QSOs were made was zone 14, which is not in the near vicinity of Europe.

As for OC, Oceania, recently, many stations have been able to be found in YB, but there seem to be few stations on 28MHz, so there may be many stations on 21MHz.

As for VK,ZL, I feel that there are not many stations from the northern hemisphere that consciously point their antennas toward the south and Oceania, as I experienced in Tonga as A31MM.

So, I am taking the time to point the antenna and run it even toward Oceania, so that there are stations that will call me.

The South American direction has been heard consistently and the response rate has been good except for the times they do it with North America.

I was not concerned about communicating with the Caribbean or Africa since the prefix is multi, not DXCC, for this contest.

Instead, I put stations with new prefixes on the N1MM available list and called them in a timely manner.

As a result, I had 692 multis, about 150 more than last year.

In this contest, multis are scored only once for all bands, not per band.

Therefore, it is also interesting to note that my score in the single band contest exceeded the scores of other multi-band stations.

Translated with DeepL.com (free version)


IC-7700(100W) 6ele yagi, Heil iC mic element

N1MM










Monday, 19 February 2024

2024 ARRL DX CONTEST CW Review

ARRL DX CONTEST CW Review

Aiming to beat last year's score, I participated in the limited SO28MHz Low Power category.

I had the impression that recent conditions were the same or better than last year, so I was hoping to break the record.

At the start, 100Q/H at 100W was an excellent start considering that I participated from the western end of Japan.

In the first leg of the 3-hour duration, which started at 9:00 a.m. Japan Standard Time (JST), 161 QSOs were made, an increase of 60 QSOs from last year.

The second leg, which lasted five hours from around 7:00 a.m. to noon on Sunday, also got off to a good start, recording 100 QSOs per hour. However, after an hour, I was no longer called, and although I alternated between S/P and RUN, I was unable to increase my score as much as I would have liked, finishing with 395 QSOs.

I tried to make a hope in the last two hours from 7:00 a.m. JST, but there were many duplicate QSOs, and I could not make up the score well.

The final score was 477 QSOs and 52 multis.

IC-7610 6ele Yagi N1MM

































Inside the band just after the start of the contest
Turn on the 7610's dual-watch function,
Monitor only the band scope without the sub's audio
Set the upper part of the band scope width to 10 kHz,
By always displaying the operational frequency of 10 kHz with auto-scrolling when the left and right frequency edges are exceeded,
This makes it easy to keep in tune and to find open gaps.
It was as crowded as 40m CW in a domestic contest in Japan.
The lower band scope can be set from 28.000 to 28.150, which is very convenient because you can look around the entire CW band and monitor the band openings at the same time.
In a World Wide contest, the bandwidth would be closer to 150, but for this ARRL CW contest, it seemed to only need to be expanded to the lower end of FT8, around 28.070.