[amsat-bb] Re: ICE/ISEE-3 to return to an Earth no longer capable of speaking to it

[Roger Kolakowski]

  From the net....


  ISEE-3 microwave filter requirements

Galvez, J. L. 
<http://adsabs.harvard.edu/cgi-bin/author_form?author=Galvez,+J&fullauthor=Galvez,%20J.%20L.&charset=UTF-8&db_key=PHY>; 
Marlin, H. 
<http://adsabs.harvard.edu/cgi-bin/author_form?author=Marlin,+H&fullauthor=Marlin,%20H.&charset=UTF-8&db_key=PHY>; 
Stanton, P. 
<http://adsabs.harvard.edu/cgi-bin/author_form?author=Stanton,+P&fullauthor=Stanton,%20P.&charset=UTF-8&db_key=PHY>
In its The Telecommun. and Data Acquisition Rept. p 114-119 (SEE 
N84-19621 10-32)

    The 64 m subnet is committed to support the International Sun Earth
    Explorer (ISEE-3) spacecraft. The uplink and one of the downlink
    frequencies will be respectively, 2090 and 2217 MHz. As these two
    frequencies fall outside the normal DSN transmit and receive bands,
    the 64-m antennas present new filter requirements, which are analyzed.

    Roger
    WA1KAT



On 02/07/2014 1:18 PM, ka2pbt wrote:
>  From Emily Lakdawalla of The Planetary Society:
>
> "So ISEE-3 will pass by us, ready to talk with us, but in the 30 years
> since it departed Earth we've lost the ability to speak its language. I
> wonder if ham radio operators will be able to pick up its carrier signal --
> it's meaningless, I guess, but it feels like an honorable thing to do, a
> kind of salute to the venerable ship as it passes by."
>
> http://www.planetary.org/blogs/emily-lakdawalla/2014/02070836-isee-3.html
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