Nodes-1/2 2.4GHz signal2016年11月26日 09時13分

衛星 Nodes-2 の 2.4GHz信号を受信したという記事を以前、JA0CAW局が報告して
いました。自局もその後何度も Nodes-2 の 2.4GHz受信を試みていますが、その
信号を捕らえることができません。今朝、それに関連して、Michael Williams氏

Rceived Nodes-2 2.4GHz on 23:27UTC over Japan by JA0CAW

Subject: RE: Nodes-1/2 2.4 GHz signal.
From: Hanson John E. (ARC-B)[Millennium Engineering & Integration Co.]
Date: 11/23/2016 1:34 AM

Michael,  Thanks for the interest in Nodes.

The 2.4 GHz signal is a spread spectrum signal that is only emitted when
the spacecraft passes over the ground station at Santa Clara University,
so unless you are near that site, you will likely not be able to monitor
the signal. You can monitor the UHF beacon regularly and the UHF crosslink
signal if you are lucky.

Regards,  John

Subject: Nodes-1/2 2.4 GHz signal.
To: Hanson, John E. (ARC-B)[Millennium Engineering & Integration Co.]
Sent: Tuesday, November 22, 2016 5:16 PM

Sir,  I would like to attempt and listen for the Nodes 2.4 GHz signal.
Could you please give me some information. Does it transmit continually
or is it turned on only over the control station? I am in Indiana.

Is it intermittent, 30 sec., 1 min. intervals etc? From what information
I could find, its frequency is 2401.2 - 2431.2 MHz with 11500 FSK.
I am using a Software defined radio to look at that spectrum.
What does the NODES signal look like?

Thank you,  Mike Williams, K9QHO, Elwood, IN

DTUsat-2 2.4GHz weak signal2016年11月26日 15時08分

10:33-10:46JST, 26 Nov 2016, Ele 80 S-Z-N, 2401.843MHz USB
受信時は全く聞こえませんでしたが、録音ファイルを再生してみると 4個の信号
自動追尾した後に録音ファイルを再生することで、DTUsat-2 2.4GHz 信号を確認

中国衛星 BY70-1 打ち上げ予定2016年11月26日 18時06分


Launch: 26 Dec 2016 at Jiuquan, China
China Center for Aerospace Science and Technology
V/U transponder Up: 145.935 / Down: 436.200 MHz