[Fred Kemmerer]

Hello Niece,

We have a microHAM MK2R+ here and have a good bit of experience with it. Just took a look at microHAM’s site and it looks like there is an interface cable available for the microKeyer II/IC-761 combination. If you have some questions about the microHAM gear, post them here and we’ll try to answer them or you can email us at [email protected].

73,

[Fred Kemmerer]

Wait a second. Is this just second hand information? I can’t quite make the leap of faith required to second this idea. I hope that my comments don’t tick you guys off. I feel like I just caught this in time… 😉

 

[Fred Kemmerer]

Maybe we could do something like this for our Phase 3 mission ….

[embedyt]https://youtu.be/rpBnurznFio[/embedyt]

 

 

[Fred Kemmerer]

Sorry Jamey, the file was too large to include directly here. You can view it via this link.

[Fred Kemmerer]

Fore more on the Oscilloscope Kit, check out Brian’s article on our Blog here.

[Fred Kemmerer]

The N1FD Rookie Roundup contest team is on the air CW mode in the contest now. If you have some time, get on and give the CW Rookies some QSOs!

73,

[Fred Kemmerer]

[attachment file=7286]

It turns out that Anita and I are working on an updated version of the satellite station that we’ve been using for club satellite contacts. Its pretty close to what is suggested in the ground stations recommendations that you referenced:

[attachment file=7287]

Here is what we are planning for the V2.0 station:

• Icom IC-9100 Radio (100W on 2M, 75W on 70cm)
• GlenMartin 4.5’ roof tower which we plan to mount on a steel plate for portable use
• Yaesu G-5500 Az/El Rotator with a Green Heron RT-21 computer controlled Az/El controller
• M2 LEO Sat Pack – 8 elements Circular X-POL on 2M, 16 elements Circular X-POL on 70cm (see below)
• Mast mounted low-noise preamps for 2M and 70cm (same units we are currently using with our HT-based station)
• Computer controlled tracking and radio/doppler shift via software (probably PCSat32)

This would cover most of the recommended station items in green in the diagram above. The only problems is that the 2M antenna in the M2 LEO Pack may not quite be up to what we need for an ISS crew contact:

[attachment file=7288]

What I’d suggest we do is put together the V2.0 LEO satellite station first and see how it does with other ARISS contacts (repeaters, packet and APRISS). Here’s some information on what is available on the ISS (info from http://issfanclub.com):

ISS Frequencies

Amateur Radio Frequencies (Note: Only one mode active at a time) FM VOICE for ITU Region 1: Europe-Middle East-Africa-North Asia

• Downlink 145.800
• Uplink 145.200

FM VOICE for ITU Region 2&3: North and South America-Caribbean-Greenland-Australia-South Asia [These are the ISS Crew Frequencies]

• Downlink 145.800
• Uplink 144.490

FM U/v VOICE Repeater (Worldwide) – [Looks like there may be a U/V repeater onboard]

• Downlink 145.800
• Uplink 437.800

FM V/u with PL VOICE Repeater (Worldwide) – [And also a V/U repeater, likely is this or the previous but not both at the same time….]

• Downlink 437.800
• Uplink 145.990 with 67.0 PL

FM L/v VOICE Repeater (Worldwide) – [This might be interesting to try at some point in the future]

• Downlink 145.800
• Uplink 1269.650

AX.25 1200 Bd AFSK Packet Radio (Worldwide) – [I believe that curtis used this to make a packet contact during 2016 Field Day]

• Downlink 145.825
• Uplink 145.825

FM SSTV downlink (Worldwide) – [We should DEFINITELY try this when there is an SSTV event scheduled!]

• Downlink 145.800

UHF Simplex (rarely used) – [Probably a crew communications alternative]

• Downlink 437.550
• Uplink 437.550

Here’s what AMSAT lists – not quite the same but may be more reliable information (info from http://www.ariss.org/contact-the-iss.html) –

• Voice Uplink: 144.49 for ITU Regions 2 and 3 (The Americas, and the Pacific and Southern Asia)
• Voice Uplink: 145.20 for ITU Region 1 (Europe, Russia and Africa)
• VHF Packet Uplink and Downlink: 145.825 (Worldwide)
• UHF Packet Uplink and Downlink: 437.550
• UHF/VHF Repeater Uplink: 437.80
• UHF/VHF Repeater Downlink: 145.80

If we find that the 2m antenna in the LEO pack is not enough, we could replace the antennas in the LEO pack shown above with something like a pair of the following antennas from M2:

[attachment file=7289]

Using a pair of these should give us a gain of about 15 dBi which should be more than enough to work the ISS on 2M with 100W. I would also probably add a polarization switch to the larger antennas so that we could run them with either left or right had circular polarization.

Greg, I know that you and others in the club are interested in satellite station building and operating. Would you or others in the club be interested in help to put together and test the V2.0 satellite station once everything arrive here? If anyone is interested, please reply to this topic. I am guessing that all of the gear will be here sometime in January.

73,

 

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[Fred Kemmerer]

Hi Greg,

This sound like a great idea if we could get approval for an ARISS contact with a crew member. I think that we’d probably have a much better chance at this if we teamed up with a school. Perhaps the Nashua ASD school that John and I have been working with might be a candidate?

73,

 

[Fred Kemmerer]

Hi Greg,

Great! We’ll include you on our team. Right now, the following folks have also expressed interest –

• Aron, W1AKI
• Jamey, KC1ENX
• Brian S., AB1ZO
• Anthony, KC1DXL
• Anita, AB1QB
• Yourself
• Me

I’m planning to schedule a call for one evening this week or early next week. If folks could let me know if there are any bad days, I will try to work around these. We will avoid Thursday evening as some of us are trying to go to make it labs to check it out for a possible future youth event. May try for something at 9 pm on Wednesday, Dec. 14th. Stay tuned…

73,

[Fred Kemmerer]

Here is some more good information (FAQs).

[Author]

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