FO-29 Solar Array Current Graph #4

 25 Feb 2011
 13 Mar 2011
 02 Aug 2011

 
Re: FO-29 Hit by solar flare?
From: Frank Wiesenmeyer
To: Mineo Wakita
Date: Fri, 25 Feb 2011 18:34:59 -0600

I have been watching FO-29 telemetry very closely since we heard that the sun
was erupting in solar flares.

I have noticed that Channel 4C (Battery Voltage) is showing some unusual
behavior since February 17, 2011 now reaching values higher than 17 volts.
The most significant event is that the channel 4C makes an error now when it
reaches A0 ( it reads E0).  If you change the E to A, the readings makessense.
This error in the Telemetry system could be related to the unusualsolar
activity we have had recently.  The additional radiation exposure may have
damaged one of the Integrated Circuits in the Telemetry System.

I am enclosing a copy of my most recent telemetry sheet and the plot of
channel 4A solar array current.  Notice that the SPIN PEREIOD has become
smaller in the past week, dropping from 14 minutes to only 10 minutes and
the data is changing much more.  I have also noticed more polarization changes
in the 435.800 MHz biacon.  Normally, the polarization (V or H) changes
very little during a 15 minute pass.  Now it is changing 4 or 5 times during
the pass as observed with my two yagis, one vertical and the other horizontal.

The good news is that the battery is in very good condition and recovers
very quickly as it comes out of eclipse and reaches higher voltages than ever.








    
Decatur, IL USA                                Frank K9CIS
290km South West of Chicago


 
Re: Hope U are OK
From: Frank Wiesenmeyer
To: Mineo Wakita
Date: Sun, 13 Mar 2011 19:37:14 -0500

Mineo:

With all the bad news of the earthquake and Tsunami from Japan, I have been worried about
you and your family. I hope you are OK and your house and antennas are still standing.

When you get the opportunity, please let me know your situation.
Is there anything I can do to help?

Your friend in USA,
Frank K9CIS

PS. FO-29 is spinning faster these days as the sun is more active.


Re: Hope U are OK
From: Mineo Wakita
To: Frank Wiesenmeyer
Date: 13 Mar 2011

Hi Frank,

I and my wife, daughters are safe.
Because there is it on the hill, the house is safe.
Do not worry. Thank you.

JE9PEL, Mineo Wakita from Yokohama Japan








 

Re: FO-29 status 8-2-11
From: Frank Wiesenmeyer
To: Mineo Wakita
Date: Tue, 2 Aug 2011 17:10:59 -0500

Hello Mineo:

Enclosed recent FO-29 Telemetry report.  All data looks very good except lot of
Fs in place of Bs in temperature frames.

Example:

82  60  97  91  F1  8A  F9  F6  F8  F9  F5  21:24:03
7F  63  9E  96  F1  47  F8  F5  F7  F8  F6  21:34:47

SOLAR ARRAY graph attached.  

Hope you and family are doing well and not affected too much by earth quake.

73 for now,
Frank K9CIS


From: Mineo Wakita
To: Frank Wiesenmeyer

Hi Frank,
Thanks for your FO-29 Solar Array Current Graph update.

We, Japanese restores from the damage of this Earthquake and Tsunami by all means.
However, the damage of Fukushima Daiichi Nuclear Power Station is serious accident.
Thank you for your kind encouragement.

JE9PEL, Mineo Wakita from Yokohama Japan





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