量測 NR-770R 車天線 的 駐波比 SWR

量測 NR-770R 車天線 的 駐波比 SWR

車天線 NR-770R

使用 KC901H 與 KVE520

量測 VHF 140-152MHz

量測 UHF 423-447MHz

2015-12-25

2021-02-17

向量網路分析儀KC901S的開箱文

向量網路分析儀KC901S的開箱文：

如同內行前輩所言，這種儀器，如果是HP牌子至少要一百萬元以上，如今以三萬多台幣買到，真是太高興了。

KC901S乃BD8AAA所研發製作，付款之後竟然二天就到了，太驚奇了！

2015-11-19

2019-11-20

AMSAT 發佈中國發射 Tianwang-1A Tianwang-1B Tianwang-1C 之消息

美國 AMSAT 發佈中國發射 Tianwang-1A Tianwang-1B Tianwang-1C 之消息


Beijing Launches Three More Amateur Radio Satellites


On September 25, 2015 at 01:41 UT Beijing launched three satellites with
amateur radio payloads from the Jiuquan Satellite Launch Center (JSLC)
in the
Gobi desert, Inner Mongolia. They were carried on a new launcher, Beijing’s
first solid-fuel rocket Chang Zheng 11 (CZ-11), and deployed in a 470 x
485 km,
97.3 degree inclination Sun Synchronous Orbit (SSO).

This launch occurred just over 5 days after nine satellites carrying amateur
radio payloads were launched by Beijing from the Taiyuan Satellite Launch
Center (TSLC) in Shanxi on September 19 at 23:01 UT.

The satellites were developed by students at the Nanjing University of
Aeronautics and Astronautics in collaboration with the Shanghai Engineering
Center for Microsatellites (SECM).

The main goal of the mission is to experiment with Software Defined Radio
(SDR) in space. The amateur radio payloads will be used for exchanging
Telemetry, Tracking and Command (TT&C) information with the amateur radio
ground control station. Information about the telemetry will be made
publicly
available so that radio amateurs around the world may track and monitor the
health of the satellites.

Other payloads include a video camera along with receivers for dual-band
GPS/Beidou, Maritime Automatic Identification System (AIS) and Aeronautical
Automatic Dependent Surveillance Broadcast (ADS-B).

Using MEMS based cold-gas micropropulsion it is planned to demonstrate
formation flying by two of the CubeSats along with inter satellite
communication using GAMALINK 2.4 GHz spread spectrum at 1 Mbps and the
CubeSat
Space Protocol (CSP).

The TW-1A and TW-1B CubeSats are 2U (20x10x10cm) in size while TW-1C is 3U
(30x10x10cm).

Michael Chen BD5RV reports the satellites have these downlinks in the
435-438
MHz ITU Amateur Satellite Service allocation:
• Tianwang-1A (TW-1A / SECM): Camera, 435.645 MHz GMSK 4800/9600 CSP TX
interval 10s
• Tianwang-1B (TW-1B / NJUST-2): AIS, 437.645 MHz GMSK 4800/9600 CSP TX
interval 20s
• Tianwang-1C (TC-1C / NJFA-1): ADS-B, 435.645 MHz GMSK 4800/9600 CSP TX
interval 10s
Note: TW-1A and 1C use the same frequency.

On the same launch was the technology demonstration satellite Pujian-1 which
has WiFi for intra-satellite communications.

Object identification from information supplied by Nico Janssen PA0DLO and
Zhang Xuan BH4DBE:
TW-1A object 40928, 2015-051B
TW-1B object 40927, 2015-051C, (other IDs: TianWang 1B, NJUST-2)
TW-1C object 40926, 2015-051D
Pujian 1 object 40925, 2015-051A
Chang Zheng 11 (CZ-11) fourth stage object 40929, 2015-051E

Keplerian Two Line Elements (TLEs) ‘Keps’ for new satellites launched in
past
30 days
http://celestrak.com/NORAD/elements/tle-new.txt

Shanghai Engineering Centre for Microsatellites
http://www.microsate.com/en/

GAMALINK in Space
http://tekevernews.blogspot.co.uk/2015/07/gamalink-in-space.html

IARU Satellite Frequency Coordination pages
http://amsat.org.uk/iaru/

Satellite tracking information
http://amsat-uk.org/beginners/satellite-tracking/

Adding new satellites to SatPC32, Gpredict and Nova
http://amsat-uk.org/2013/11/23/adding-new-satellites-to-satpc32/


[ANS thanks AMSAT-UK for the above information]


---------------------------------------------------------------------

2015-10-16

中國 紫丁香2号卫星无线电技术探秘

中國 紫丁香2号卫星无线电技术探秘

http://lilacsat.hit.edu.cn/?page_id=29


73

2015-10-16

中國的「希望二號」衛星將於2015-9-18 2300UTC發射

中國的「希望二號」衛星將於2015-9-18 2300UTC發射

轉貼如下

CAMSAT XW-2 Satellites Launch Information

http://www.hellocq.net/forum/read.php?tid=344067&ds=1&page=e#a
 

Alan Kung BA1DU has posted launch information for the XW-2 (CAS-3) satellites on the AMSAT Bulletin Board.
Launch time: UTC 23:00:00 on 2015-09-18
The satellites will separate from rocket at UTC 23:15:14 on 2015-09-18
The satellites will be launched on Beijing’s new Chang Zheng 6 (CZ-6) rocket from the Taiyuan Satellite Launch Center.
It is understood the CZ-6 is carrying at least nine satellites with payloads operating in amateur bands. They include six satellites (designated XW-2A to XW-2F) with 435/145 MHz linear transponders for SSB/CW communications, and one satellite with an FM voice transponder. The frequencies to be used by the satellites are here.
XW-2A should operate in a sun-synchronous orbit at an altitude of about 450 km, with the other satellites at an altitude of about 530 km.

Predicted Two-Line Element (TLE) for tracking:XW-21 99999U          15261.96885740  .00004980  00000-0  28369-3 0 000002 99999 097.4712 269.8396 0010382 266.0521 270.6645 15.12847582000010

Further information on the XW-2 satellites is at
http://amsat-uk.org/satellites/communications/camsat-xw-2/

Satellite tracking information
http://amsat-uk.org/beginners/satellite-tracking/

Adding new satellites to SatPC32 and Gpredict
http://amsat-uk.org/2013/11/23/adding-new-satellites-to-satpc32/

SatPC32 doppler.sqf
http://www.pe0sat.vgnet.nl/2015/xw-2cas-3-launch-information/

73

2015-09-18

ISS太空站2015-07-31下午19:26 (11:26 UTC) 與日本東京都文京區童軍業餘無線電社通話 台灣可測試收聽通話的前幾分鐘

ISS太空站2015-07-31下午19:26 (11:26 UTC) 與日本東京都文京區童軍業餘無線電社通話 台灣可測試收聽通話的前幾分鐘

E-mail list 原文的節錄：

23rd World Scout Jamboree Nippon Boy Scout Amateur Radio  Club, Bunkyo-ku,
Japan, direct via 8N23WSJ
The ISS callsign is presently  scheduled to be NA1SS
The scheduled astronaut is Kjell Lindgren  KO5MOS
Contact is a go for: Fri 2015-07-31 11:26:54 UTC 74  deg


頻率: 145.800MHz
模式: NFM

(上鏈頻率不是 145.800MHz, 請勿發話, 發射也無法干擾, 謝謝!).
預祝 測試收聽愉快 !

http://www.southgatearc.org/news/2015/july/ariss_event_3107.htm#.VbccPrOqqko

Upcoming ARISS contact with 23rd World Scout Jamboree Nippon Boy Scout Amateur Radio Club, Bunkyo-ku, JapanAn International Space Station school contact
has been planned with participants at 23rd World Scout Jamboree Nippon Boy Scout Amateur Radio Club, Bunkyo-ku, Japan on 31 July.
The event is scheduled to begin at approximately 11:26UTC.
It is recommended that you start listening approximately 10 minutes before this time.The duration of the contact is approximately 9 minutes and 30 seconds. The contact will be direct between NA1SS and 8N23WSJ. The contact should be audible over Japan and adjacent areas. Interested parties are invited to listen in on the 145.80 MHz downlink. The contact is expected to be conducted in English.
The theme of the 23rd World Scout Jamboree (23WSJ) is “Wa: a Spirit of Unity”. The Kanji character indicates awide variety of meanings such as unity, harmony, cooperation, friendship, and peace. Moreover, it encapsulates the essence of Japan, a country where tradition and the latest technology coexist in harmony.
There will be various walk-in activities that Scouts can enjoy during their free time. Such activities will include an amateur radio workshop (Callsign is 8N23WSJ).
Age of scouts who will talk with an astronaut is 14 – 17.

The following questions will be asked by the students as time permits:

1. In the journey from earth to the ISS, when was the most stressful time?
2. How do you taking a bath and shampoo your hair?
3. How do you count the time you start to work each day in the space and do you have a holiday up there?
4. Have you been a scout? If yes, what activity do you like the most?
5. How do you feel when you look back to the earth?
6. Which planet you would like to visit the most?
7. How do you get fresh fruits?
8. Have any astronauts got sick in space? If yes, what was the sickness and what do they do?
9. After the mission was over, did you want to come back to space again?
10. Why do you want to be an astronaut?
11. Are you doing anything because you do not forget the sense at a day of the week and the date?
12. What trouble does you to eat the space food with micro gravity?
13. How do you shampoo your hair?
14. Please advice if the scout hams would like to make contact with ISS station.
15. How do you drink the water?
16. Have any astronauts got sick in space? If yes, what was the sickness and what do they do?
17. How do you see the earth from space?
18. I think that an upper and lower sense is lost. How do you sense the upper and lower?
19. Who decides the menu of the space food?
20. Can you see the ground building from the space? What were you able to see?


Sign up for the SAREX maillist at
http://www.amsat.org/mailman/listinfo/sarex

Visit ARISS on Facebook. We can be found at Amateur Radio on the International Space Station (ARISS).

To receive our Twitter updates, follow @ARISS_status

2015-07-31 傍晚 19:26 左右用三元件 Yagi 接 Standard C520 旁邊 Sony 錄音棒錄音
相機是 Canon 500D 鏡頭 18mm ISO400 F/3.5 快門 4 秒

https://www.youtube.com/watch?v=zdY_uyhSztc

做影音檔花了一個下午，大家看看...


73 de BX2ADJ  ( ex-BM2CAJ )

ISS太空站 2015/ 7/18-19有SSTV可收

ISS太空站 7/18-19有SSTV可收

7/18-19


ARISS SSTV Images to Commmemorate 40th Anniversary of the Apollo-
Soyuz Mission

40 years ago this week, the historic joint Apollo-Soyuz mission was
conducted.   Apollo-Soyuz (or Soyuz-Apollo in Russia) represented the
first joint USA-Soviet mission and set the stage for follow-on Russia-
USA space collaboration on the Space Shuttle, Mir Space Station and
the International Space Station.  The Soyuz and Apollo vehicles were
docked from July 17-19, 1975, during which time joint experiments and
activities were accomplished with the 3 USA astronauts and 2 Soviet
Cosmonauts on-board.  Apollo-Soyuz was the final mission of the
Apollo program and the last USA human spaceflight mission until the
first space shuttle mission in 1981.

To commemorate the 40th anniversary of this historic international
event, the ARISS team has developed a series of 12 Slow Scan
Television (SSTV) images that will be sent down for reception by
schools, educational organizations and ham radio operators,
worldwide.  The SSTV images are planned to start sometime Saturday
morning, July 18 and run through Sunday July 19.  These dates are
tentative and are subject to change.  The SSTV images can be received
on 145.80 MHz and displayed using several different SSTV computer
programs that are available on the internet.

We encourage you to submit your best received SSTV images to:

http://spaceflightsoftware.com/ARISS_SSTV/submit.php

The ARISS SSTV image gallery will post the best SSTV images received
from this event at:

http://spaceflightsoftware.com/ARISS_SSTV/index.php

Also, as a special treat, on Saturday July 18 the ISS Cosmonauts
will take time out to conduct an ARISS contact with students
attending the Moon Day/Frontiers of Flight Museum event in Dallas
Texas.  This Russian Cosmonaut-USA Student contact is planned to
start around 16:55 UTC through the W6SRJ ground station located in
Santa Rosa, California.  ARISS will use the 145.80 MHz voice
frequency downlink (same as the SSTV downlink) for the Moon Day
contact.

For more information on ARISS, please go to our web site:
www.ariss.org

The ARISS international team would like to thank our ARISS-Russia
colleague, Sergey Samburov, RV3DR, for his leadership on this
historic commemoration.

[ANS thanks Frank H. Bauer, KA3HDO, ARISS International Chair for
the above information]



建議對照 ISS 位置，
http://iss.astroviewer.net/


祝 接收順利 ! 

73, BX2ADJ ( ex- BM2CAJ )

2015-07-18

ISS太空站 2015/4/11 UTC10:00-21:00又有SSTV可收

ISS太空站 2015/4/11 UTC10:00-21:00又有SSTV可收

4/11 UTC10:00 - 21:00

台灣有二次機會, 看來條件不是很好

Satellite passes / Orbitron 3.71 / www.stoff.pl
Conditions    : Maximum sun elevation = None
                Minimum sat elevation = 5 deg
                Illumination NOT required

Time                Satellite              Azm  Elv  Mag Range S.Azm S.Elv
--------------------------------------------------------------------------
2015-04-11 16:12:30 ISS                   44.0 23.9  ecl   872   7.7 -56.4
2015-04-11 17:48:41 ISS                  235.0 15.2  ecl  1163  43.2 -46.7

*Russian SSTV Scheduled for Next Weekend*

*In celebration of Cosmonautics Day, Russian ARISS SSTV activity is planned
for the second week of April.*

*Cosmonautics Day celebrates Yuri Gagarin?s famous flight on April 12, 1961
becoming the first human to reach space. *

*The SSTV event is planned for Saturday, April 11, beginning at 10:00 UTC
and continuing until 21:00 UTC. All transmissions will use the high
resolution SSTV mode PD180. Transmissions will be at 145.800 MHz. If
similar to past events,* *12 different photos will be sent through the
weekend with 3 minute off periods between transmissions.*

*To receive the images in real time, all that?s required is a 2 meter radio
receiver and a computer to convert the receiver?s audio to image form. The
software to do this is available as freeware on the internet at sites such
as **http://hamsoft.ca/pages/mmsstv.php*
* .*

*Received images can be uploaded and viewed at the ARISS Image gallery
found at **http://www.spaceflightsoftware.com/ARISS_SSTV/index.php*
* .*

*Please note that due to unanticipated events on board the ISS, any
scheduled ham event may be cancelled or delayed. C**ontinue to check the
ARISS Facebook and Twitter accounts listed below for any updates.*


建議對照 ISS 位置，
http://iss.astroviewer.net/


祝 接收順利 ! 
.

73, BX2ADJ ( ex- BM2CAJ )

2015-04-11

最近發現 百度 天眼 也能追蹤飛機的位置 2015-01-30

最近發現 百度 天眼 也能追蹤飛機的位置 2015-01-30

中國地區同時有大約三百台飛機在飛, 很熱鬧

http://tianyan.baidu.com/sky

地圖顯示, 除了

aprs.fi

還有

http://aprs.hellocq.net/


參考：
飛機通信尋址與報告系統（英語：Aircraft Communication Addressing and Reporting System，縮寫：ACARS）

https://zh.wikipedia.org/wiki/%E9%A3%9E%E6%9C%BA%E9%80%9A%E4%BF%A1%E5%AF%BB%E5%9D%80%E4%B8%8E%E6%8A%A5%E5%91%8A%E7%B3%BB%E7%BB%9F

是一種在航空器與地面站之間通過無線電或衛星傳輸短消息（報文）的數字數據鏈系統。該協議於20世紀70年代提出

73

ISS 太空站2015-01-24下午22:21與日本東京都澀谷區NHK通話 台灣可測試收聽通話的前幾分鐘

ISS 太空站2015-01-24下午22:21與日本東京都澀谷區NHK通話 台灣可測試收聽通話的前幾分鐘

E-mail list 原文的節錄：

NHK ?Masakame? event, Shibuya, Japan, direct via  JK1ZRW
Contact is presently scheduled to be with NA1SS
The scheduled  astronaut is Samantha Cristoforetti IZ?UDF
Contact is a go for: Sat  2015-01-24 14:21:04 UTC 56 deg

頻率: 145.800MHz
模式: NFM


(上鏈頻率不是 145.800MHz, 請勿發話, 發射也無法干擾, 謝謝!)
預祝 測試收聽愉快 !

73, BX2ADJ ( ex- BM2CAJ )