Warning Search: Spacecraft DX1

Finally, our long-awaited event is close to accomplishment - the launch of the DX1 spacecraft on Tuesday, July 8th. We would like to ask for help from all radio amateurs who are interested in receiving signals from spacecraft. We suggest you to take part in the "catching" of our satellite immediately after the start.



Start will be at 19:58 Moscow time from Baikonur. Based on the parameters of the orbit, the first successful communication session is expected after 3 hours over Eastern Europe, and then the satellite will return to Russia only after a few turns in a few hours from the Far East. Therefore, our MCC in Moscow will be able to hold the first communication session only the next day. The satellite beacon broadcasts in amateur radio frequency, so everyone will have the opportunity to hear it before us. Moreover, such assistance is necessary for us to clarify its orbit and confirm its efficiency. Therefore, our gratitude will be supported by memorable souvenirs for lucky catchers from around the world.

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Parameters of the radio complex in beacon mode:

· Carrier frequency: 438.225 MHz
· Protocol used: AX.25
o Callsign source: DSC001
o Receiver callsign: Dauria
· Frame size TMI, inside the AX.25 packet: 55 bytes
· Speed: 9600 bps
· GFSK modulation

Nominal orbit parameters for spacecraft “DX1”.
The initial phase of the “DX1” is in the frame. The date of launch is the date of time of KP 15: 58: 28.0 UTC

	Parameter	Name	Value
one	Separation time (from KP): - sec; - h: m: sec	t D6	9192.88 02: 33: 12.88
2	Geographical coordinates and altitude spacecraft at t DTD 6 : latitude, deg longitude, deg altitude, km	j l H	49.34 sl 153.02 wl 647.5
3	Phase vector at t DTD 6 , km, m / s	X Y Z Vx Vy Vz	-1910.3877 -4171.0472 -5304.7380 782.4221 5753.3391 -4803.9499
four	SC “DX1" at the moment t DTD 6 :
	- semimajor axis, km	a	7008.0
	- eccentricity,	e	0.00078
	- Inclination of the orbital plane, deg	i	98.41
	- longitude of ascending node, deg	W	75.23
	- argument of perigee, deg	w	37.98
	- true anomaly, deg	u	191.89
	- osculating period, h: min	T	1: 37.3

Nominal tle
1 99999U 14999Q 14189.77200093 .00000000 00000-0 00000 + 0 0 189
2 99999 098.4063 241.3788 0009514 255.2875 334.5465 14.78395364 14
(We are grateful to Denis Tuchin from IPM RAS for the calculation).

All search results are sent to e-mail: arkhangelskiy@dauria.ru and / or Dmitriev@dauria.ru.
Or in our social networks: FB and VK

We are waiting for the start! And good luck to us!