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forum.funcube.org.uk • View topic - Anyone have a handle on UL/DL Relationship

Anyone have a handle on UL/DL Relationship

The objectives of the FUNcube project are set out here.

Moderators: pa3weg, g4dpz, admin

Re: Anyone have a handle on UL/DL Relationship

Postby wd9ewk » Thu Nov 28, 2013 7:24 pm

Patrick WD9EWK/VA7EWK
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Re: Anyone have a handle on UL/DL Relationship

Postby 2e0sql » Fri Nov 29, 2013 2:17 pm

Peter, 2E0SQL
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Re: Anyone have a handle on UL/DL Relationship

Postby OH2FQV » Fri Nov 29, 2013 5:23 pm

You can estimate your downlink with this little formula.

UF - 581.111 MHz=DF ± doppler

UF = Uplink frequency (LSB)
DF = Downlink frequency (USB)

Unofficial info, from my own math and speculations

Any good?

: Jari / OH2FQV
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Re: Anyone have a handle on UL/DL Relationship

Postby wd9ewk » Sun Dec 01, 2013 8:55 am

Hi!

More are getting a handle on this satellite. The evening passes over North America are still drawing crowds. One pass I worked tonight turned into a roundtable chat among several stations in the western and central USA. I've posted some videos - satellite audio combined with a slideshow - from several passes over the past week on my YouTube channel:



Most of the time, I use a pair of FT-817NDs. For one pass last night, I replaced one 817 with the all-mode receiver in a Kenwood TH-F6A HT (similar to the TH-F7 sold outside the Americas). Tonight, I tried an Icom IC-R20 receiver. I still have to get my FUNcube Dongle Pro+ working for this satellite, the next item on my "to do" list. :-)

I posted a message to the AMSAT-BB list referring to my videos, along with observations after working this satellite over the past week. Rather than copying that message here, I'll offer the following link to it:



The OSCAR Satellite Status Page at:



now has AO-73 as a valid satellite for reporting observations. Thanks to KD5QGR for updating the site tonight with the new satellite!

This new satellite has been fun to work. Lots of stations showing up, including some that have been away from the amateur satellites for a long time. And all of this from a little cube!

73!
Patrick WD9EWK/VA7EWK
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