BT3WX Special Event Station for Launch of XW-1 Amateur Satellite

AMSAT.org
November 29, 2009

BT3WX Special Event Station Celebrates Launch of XW-1 Amateur Satellite

To celebrate the launch of China’s first amateur satellite, XW-1, AMSAT-China will set up a special event station in Taiyuan, Shanxi Province of China using the callsign BT3WX. The station plans to operate on all HF amateur bands from 10 to 160 meters and on VHF/UHF amateur satellite bands, including FM, SSB, CW, RTTY and PACSAT modes.

Operations at BT3WX have already commenced and the special event station will remain active until XW-1 is launched. A specific launch date has not been released as of press time, but is expected in mid-December.

A team of 200 participants will consist of radio amateurs from all around China, teachers and students, the State Radio Regulation Bureau of China, the China Association for Science Technology, the Chinese Society of Astronautics and the Chinese Radio Sports Association officials, as well as journalists will participate in the operation of BT3WX. Their goal is to inspire enthusiasm for amateur radio satellite communications activities in China among radio amateurs and young people learning satellite communication technology and space knowledge.

THE BT3WX operating team is as follows:
Team leader: BA1EO, Fan
Operation and Technology support: BD5RV, Michael Chen
Press release and QSL Manager: BA1DU, Alan Kung (P.O.Box 8091, Beijing, CHINA 100088)

The operators include BA4RB, BA4RN, BA4RS, BA4RX, BA4TA, BA4TB, BD4IBW, BD4REB, BD4RPJ, BD4XX, BH4REQ, BA6AA, BD6BW, BA7CK, BA7JG, BD7PZL.

The equipment at the HF Station includes an Icom IC-756PROIII and IC-7000.

The HF antennas are:

160/80M Ground Plane
40M 3ele Yagi
20/15M 5ele Yagi
10M 3ele Yagi
WARC Ground Plane
Power Amplifier: GO-2KW

At the Satellite station the gear will include an Icom IC-910H feeding a VHF 7 element cross Yagi and UHF 13 element cross Yagi.

BT3WX Communications HF Award
Stations completing two-way communications with BT3WX on 9 different bands and modes can apply for the BT3WX HF communications award. The same band in different modes counts as a different band / mode.

BT3WX Communications Satellite Award
Stations completing two-way communications with BT3WX through at least two different mode of transponders can apply for the BT3WX satellite communications award. The different modes can be through the same satellite.

BT3WX Communications Awards applications mailing address:
AMSAT-China, P.O.Box 8091, Beijing, CHINA 100088

E-mail: camsat@vip.163.com
The XW-1 communications payload includes a beacon and three cross band transponders operating in FM, linear, and digital modes. Here is a Spacecraft Summary:

Common Name: XW-1
Alternate Name: CAS-1
Satellite Type: Microsatellite
Launch Date: TBD
Launch Location: Taiyuan Satellite Launch Center of China
Launch Vehicle: CZ-2C(LM-2C) Rocket
Apogee: 1200.00 km
Perigee: 1200.00 km
Inclination: 100.50 deg
Period: 109.00 min
Dimensions: 680mm*480mm (Envelope dimension), not including antennas
Weight: 60.000 Kg
Organization: CAMSAT

Frequency Information

Mode Beacon (200 mw):
Downlink 435.7900 MHz CW

Mode FM Voice Repeater (1 watt, PL: 67Hz):
Uplink: 145.8250 MHz FM

Downlink 435.6750 MHz FM

Mode Linear Transponder (1 watt, Inverting):
Uplink: 145.950 MHz SSB/CW
Downlink 435.740 MHz SSB/CW
The transponder is 50khz wide and centered on the frequencies given.

Mode PacSat BBS (1 watt):
Uplink: 145.8250 MHz AFSK 1200 BPS
Downlink 435.6750 MHz AFSK 1200 BPS

Antennas:
145 Mhz RX Antenna: 2.0dBi max, LHCP
435 Mhz TX Antenna: 3.0dBi max, RHCP

The AMSAT Satellite information page will be updated as the latest information is received from AMSAT-China. Monitor this page for the latest news: