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Programming Help For 2 Meters?

KC9KOW – July 2, 2007 – 22:45

I'm trying to get all set up for an ISS contact on my own (random contact).
I have the freq's and need to get them programmed right. I have a Yaesu VX-170 and was told that there may or may not be a negative offset of 300Khz.

I also need help getting the radio programmed correctly with the up and down links. The person I talked to said it may take a few memory channels, but that it would work out.

Thanks for anyone's help here!

Dan - KC9KOW

Voice
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Take a look at these pages

AH6RH – July 3, 2007 – 04:22

Hi Dan,

Take a look at these pages, which supplements the info Kenneth provided.

http://ronhashiro.htohananet.com/am-radio/spacecomm/getting-started-iss.html
http://ronhashiro.htohananet.com/am-radio/spacecomm/doppler-and-the-iss.html

The discussion on doppler memory programming is towards the bottom of the first page. If you have a radio that can tune in increments finer than 5 KHz, Kenneth's memory plan is highly recommended.

Good luck!

Ron Hashiro, AH6RH
Honolulu, HI

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Sample of programming

N5VHO – July 3, 2007 – 00:19

Memory locations if better than 5kHz steps (ITU Region 2 &3 uplink used for the example).

Memory...Doppler...ISS transmits...We listen at...We transmit at....ISS listens
..1............3Khz......145.8000.........145.8030.........144.4870.........144.4900
..2............2Khz......145.8000.........145.8020.........144.4880.........144.4900
..3............1Khz......145.8000.........145.8010.........144.4890.........144.4900
..4............0Khz......145.8000.........145.8000.........144.4900.........144.4900
..5...........-1Khz......145.8000.........145.7990.........144.4910.........144.4900
..6...........-2Khz......145.8000.........145.7980.........144.4920.........144.4900
..7...........-3Khz......145.8000.........145.7970.........144.4930.........144.4900

For Memory steps of 5 KHz, round and reduce the number of memories to 1 on each side of center(total of 3 memories to compensate for the Doppler).

Kenneth - N5VHO
http://spaceflight.nasa.gov/station/reference/radio/
http://www.clarc.org/jprod/component/option,com_weblinks/catid,14/Itemid,23/

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