DTUsat-2 2.4GHz CW2019年11月01日 11時02分

only two beacon at AOS

Armadillo visible circle2019年11月02日 10時49分

Because the visible circle is small, I checked it with SatEvo.
It's 12 Dec 2024.

DTUsat-2 2.4GHz CW2019年11月03日 11時27分

very weak, only one at AOS

JY1Sat using SDR#17322019年11月04日 10時55分

No change in received image.

Angelfish2019年11月04日 19時16分

Angelfish that is the password for this blog comment,




Re: GQRX ...2019年11月06日 20時16分

I have been worried for a long time because the reception sensitivity
of GQRX on LINUX suddenly becomes insufficient. This problem was solved
by exchanging the line connecting the SDR dongle MCX(J) and the end of
the coaxial cable MP.

I have been receiving well the signal since I exchanged from the next
No1 line to No2 line. It seems that poor contact of No1 line was the
cause of poor sensitivity.

  1. MCX(P)====SMA(J) + SMA(P)====MJ
           50cm               50cm
           cable              cable

  2. MCX(P):SMA(J) + SMA(P)=========SMA(P) + SMA(J):MJ
        adapter              100cm            adapter

DTUsat-2 status2019年11月07日 22時35分


Re: DTUsat-2
To: Mineo Wakita
Date: Wed, 6 Nov 2019 20:51:27 -0500 (EST)


On many days, only one or two DTUSat-2 beacons at my QTH.

Today, 06-11-2019, first beacon did not transmit until 62 degrees
elevation just before TCA followed by 6 more full or partial beacons.
Yesterday, 05-11-2019, low pass with multiple beacons.

Attachment 1, 05-11-2019 at 5 degrees just before AOS.
              My antennas are only 2.4 meters above ground so signal
              was being received through buildings and trees. 
Attachment 2, 06-11-2019 at 71 degrees. Very strong signal.
Attachment 3, 06-11-2019 at 72 degrees. Very strong signal.
Attachment 4, 06-11-2019 at 52 degrees. Waterfall shows data
              burst after end of CW beacon.

Signal strength seems to be normally good. Beacons are very intermittent.
DTUSat-2 is a great signal to track on 2.4 GHz.

73, Mike (K9QHO)

> On November 3, 2019 at 5:25 AM Mineo Wakita
> Hello,
> I'm receiving very very weak signal in the past
> few days, only one or two 2.4GHz CW at AOS.
> JE9PEL, Mineo Wakita

Picosatellites Launch2019年11月08日 18時39分

Launch date: 25 Nov 2019
Launch vehicle: Electron KS
  Small liquid fueled orbital launch vehicle, which is
  being developed by Rocket Lab, a US/New Zealand company.
Launch site: OnS LC-1
  Onenui Station, Mahia, Wairoa, North Island, New Zealand

  Small demonstration satellite by Astro Live Experiences,
  which is to produce an artificial meteor shower, Japan

  Budapest University of Technology and Economics, Hungary
  437.175MHz, 12.5kbps GMSK, picosatellite

  Picosatellite developed by Fossa Systems, Spain
  436.700MHz, FSK RTTY 45 baud ITA2, 100mW 183Hz Shift and
  LoRa 125kHz, Chirp Spread Spectrum Modulation, 180 bps, 100mW

  NOOR 1A and 1B, also known Unicorn 2B and 2C mission
  are picosatellite developped by Alba Orbital, USA

  Budapest University of Technology and Economics, Hungary
  437.150MHz, 12.5kbps GMSK, picosatellite

  Picosatellite developed by My Radar, Germany
  437.075MHz, bandwidth 6kHz MFSK, CW

Stomach ache2019年11月09日 18時55分

I slept all day because of stomach ache 
after eating too much.