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南加MLAチームミーティング参加報告
- 1. 南加MLAチームミーティング参加報告
2019. 6. 9
Koji Oyama, JP1HUJ AI7HU
email: jp1huj@jarl.com twitter: @Koji_Oyama
Facebook: https://www.facebook.com/koji.oyama.77/
QRZ.com: http://www.qrz.com/db/JP1HUJ
FlexRadio製品・SDR技術友の会
https://www.facebook.com/groups/flexradio.ja/
© 2019 Koji Oyama
セキュリティMLA48研究会@横浜
- 4. 南加MLAチーム
◼ W6SI浅見さん主催のMLA開発プロジェクト
◼ 月1~2回ミーティング開催
◼ 各自成果報告
© 2019 Koji Oyama
Jimmy
KK6TTL
Rich
Tak (浅見さん)
W6SI
Ed
WA6ED
Steve
KM6EMF
http://w6si.com/MagLo
op/MagLoop-003-
PracticalAspect.html
◼ K6SOA有志
◼ SOARA
(South Orange
Amateur Radio
Association)
https://www.soara.org/
- 6. 南加MLAチーム活動内容
◼ MLA製作: 耐100W出力
◼ 3Dプリンタによる接続部品作成: 素材PLA
◼ Rich, Ed
◼ メインループ作成: パイプベンダ
◼ Rich, Ed
◼ 独自可変キャパシタの製作
◼ Tak, Rich
◼ 自動チューニングに向けた
センサ・通信システム開発
◼ Jimmy : PCB, Hardware開発
◼ Steve : Firmware開発
© 2019 Koji Oyama
- 7. 3Dプリンタによる接続部品作成
◼ 素材: PLA樹脂 (Polylactic Acid / ポリ乳酸)
◼ https://i-maker.jp/blog/pla-5397.html
◼ ABS樹脂の代用品として開発
◼ じゃがいも・とうもろこしのデンプンから抽出する乳酸から生成
◼ 利点
◼ エコ、入手しやすい
◼ 弱点
◼ 熱に弱い
© 2019 Koji Oyama
- 14. おまけ: 天候不安定なCalifornia
© 2019 Koji Oyamahttps://youtu.be/imMWsPBGoXE https://youtu.be/w5l7fXZv3zg
https://youtu.be/iXGNZxHdwnE
移動日:
2019.5.26(日)
- 16. SVJHC / KK6JA
◼ Silicon Valley Japanese Ham Club
◼ https://www.facebook.com/SVJHC/
© 2019 Koji Oyama
前田さん
W2/JR1AQN
賀川さん
NW6UP
JN1WUP
丸さん
W6OPQ, JG1OPQ
高田さん
KQ6A
西村さん
NN1X
JG3JLC
- 19. Hamvention 2019
© 2019 Koji Oyama
Dayton
Chicago
1hour 300ml
Hamvention
@XeniaAirbnb
Dayton
Airport
25min 16ml
Downtown
Dayton
20min 15ml
Greene County Fairgrounds
& Expo Center @Xenia
- 20. Hamvention 2019
◼ Presentation @VSF meeting, Arlington VA
◼ http://vsf.tv/events_archive/2019-05_MtgSeries-ArlingtonVA.shtml
◼ Drove from DC to Dayton
© 2019 Koji Oyama
- 21. Alexloop by PY1AHD
◼ http://www.alexloop.com/
◼ Alexloop Premier : LED to know max currency of main loop
© 2019 Koji Oyama
- 22. LOOP Series Antennas by I3VHF
© 2019 Koji Oyama https://youtu.be/6IuBx9TW8IE
https://youtu.be/ICNsFA7uOo8
- 23. MFJ
◼ No update https://www.mfjenterprises.com/Product.php?productid=MFJ-1786
MFJ Hi-Q Antenna
© 2019 Koji Oyama
- 24. Flea Market: Air Variable Caps
© 2019 Koji Oyama
Ray, KF0AF
$10
$10
$15
32 – 100pF
25 – 83pF
100 – 205pF
- 25. No.1 topic in Hamvention 19
◼ Elecraft K4
© 2019 Koji Oyama
Wayne Burdick
N6KR
Co-Founder
Eric Swartz
WA6HHQ
Co-Founder
- 31. MLA for 40m/30m bands
© 2019 Koji Oyama
https://youtu.be/Idj7d3q0b-o
https://youtu.be/j_lez9bYn1M
- 32. JT-65 QSOs
◼ Made QSOs btw Japan and CA by my hand-craft MLA
◼ Propagated more than I thought
© 2019 Koji Oyama
30m JT-65 (2017.6.19)
40m JT-65
(2017.6.22)
- 34. 筆者紹介
◼ Name: Koji Oyama Callsigns: JP1HUJ, AI7HU
◼ Ham Background
◼ 1969 Born in Ibaraki, 40ml northeast of Tokyo
◼ 1980 Interested in radio and electronics @5th grade
◼ 1982 Got 4th-class license and opened JP1HUJ @7th grade
◼ 1988 Moved to Tokyo to enter university → QRT
◼ 1994 Studied industrial engineering and computer science → NEC
◼ 2003 Changed companies: network startup → semicon distributor
◼ 2009 Back to Ham world (CW, HF, DX) → Got 3rd,2nd,1st class license
◼ 2012 Got FCC license KF7QCZ (General) → AI7HU (Extra)
◼ 2014 Interested in SDR and bought FLEX-6300
◼ 2016 Started FlexRadio user group in Japan
◼ Aug: Joined MLA48 → Showcased FLEX-6300 + MK-7 @Hamfair 2016
◼ 2017 Established my company Xcelux Design
◼ Jan - Aug: Worked @San Jose, CA → Back and forth btw US and Japan
© 2019 Koji Oyama