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Estonia's TTU100 X band satellite questions - reply from POC
by k.swaggart＠charter.net 16 Jun '20

16 Jun '20

Received a reply from the TTU100 point of contact: <snip> Thank you for good wishes! Unfortunately the control software of X-band transmitter is still not ready, so the transmitter will be silent in the near future. Hopefully we manage to activate the X-band transmitter in beacon mode first. Most probably it will take several months. I will let you know when you could try to receive X-band signals. 73, Eerik ES1JX, ES8JX (KO28LM) <unsnip> So, it looks like we have a while before there will be X-band signals. 73, Ken, W7KKE _____

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Estonia's TTU100 X band satellite questions
by k.swaggart＠charter.net 16 Jun '20

16 Jun '20

In a tweet from AMSAT-UK I saw that an Estonian university will launch their TTU100 cubesat on Friday with a X-band downlink on 10465 MHz. Thought it would be an interesting challenge to aim my X-band dish with a sat TV LNB at closest point of approach and see if I can see anything on the SDR waterfall. My LNB output would be at 715 MHz and the Doppler at AOS would be approximately +533 KHz! A couple of questions before I start configuring the equipment: * Will the 10465 MHz downlink be on during North America passes or only when in range of the Estonian ground station? * What is the modulation? It's an imaging satellite so I expect it will be high data rate. 73, Ken, W7KKE

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Next Rocket Lab launch
by Wendy and Terry Osborne 16 Jun '20

16 Jun '20

Hi Folks, Next Rocket Lab launch is scheduled for 3rd July. See: https://www.rocketlabusa.com/missions/completed-missions/pics-or-it-didnt-h… No, I don't know why it's in "completed-missions".......... Time yet to be announced. 73, Terry Osborne ZL2BAC

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Funcube Dongle site
by Mike Hoblinski 16 Jun '20

16 Jun '20

I went to the site for information and it appears to be gone and up for sale. http://www.funcubedongle.com/ Did the supplier go out of business or discontinue sale of the product. Mike N6IMF

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Break-down of APRS digipeats & ARISS.net
by Scott 15 Jun '20

15 Jun '20

As I was replying to a question about the ISS digipeater, and in particular the ARRIS.net website, I thought maybe the explanation might benefit others new to making APRS contacts via satellite. Kit (W3KIT) was kind enough to give me the ok to use my reply to him as a way to share with others that might be interested in this kind of thing. I've uploaded the 1-page explanation with an annotated screen shot to: https://www.qsl.net/k/k4kdr//how-to/ariss-aprs-explained.pdf 73! -Scott, K4KDR

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Raspberry Pi FUNcube satellite telemetry decoder
by M5AKA 15 Jun '20

15 Jun '20

The FUNcube Team has announced the availability of FUNcube CubeSat satellite telemetry decoder software for the popular Raspberry Pi computer board https://amsat-uk.org/2020/06/15/raspberry-pi-funcube-satellite-telemetry-de… Indian radio amateur starts petition for licence change https://amsat-uk.org/2020/06/13/indian-radio-amateur-starts-petition-for-li… 15 Canadian CubeSats to launch from 2021 https://amsat-uk.org/2020/06/10/15-canadian-cubesats/ Tony Hutchison VK5ZAI in Queen’s Birthday honours list https://amsat-uk.org/2020/06/09/vk5zai-in-queens-birthday-honours/ Longjiang-2 / LO-94: Journey to the Moon https://amsat-uk.org/2020/06/06/longjiang-2-lo-94-journey-to-the-moon/ Trevor M5AKA---- AMSAT-UK http://amsat-uk.org/ Twitter https://twitter.com/AmsatUK Facebook https://facebook.com/AmsatUK YouTube https://youtube.com/AmsatUK ----

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Re: [amsat-bb] Alpha Spid Rotator
by Edward R Cole 15 Jun '20

15 Jun '20

Note: I am using the Alpha-Spid RAK as azimuth rotator on eme for 50 and 144 MHz. No experience with RAS. Only have the RAK installed for my 144-eme array of four XP yagis at this point. I have about 150-foot cable run and using 8-conductor standard rotator cable (only four needed by the Spid) I had excessive voltage loss on the motor lines (dropped to 8vdc). Even paralleling some of the unused wires did not solve. I finally use a pair of No. 10 wires to get 12v to the rotator. I run 18vac into the controller (which has a bridge rectifier) to obtain 24vdc unloaded on output. Loaded the voltage sags to about 18vdc at the controller, but runs the rotator fine. Use the No. 20 control wires in the original rotor cable for indication with no issues. I have the 1-degree resolution rotator (good enough for 50 or 144-MHz). Previously, I ran a Ham-IV which only provides 5-degree movement due to the brake system. Ham-IV was challenged for torque by the eme array. Spid seems to handle that FB. 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa(a)gmail.com

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FUNCube Dongle Pro+
by Jim Sanford 14 Jun '20

14 Jun '20

All: I've been seeking to buy one of these. Any site that comes up in Google directs me to a site which cites names.co.uk and tries to sell me this domain. Has the FUNCube dongle disappeared, or am I being spoofed? Anybody have a direct link to purchase and get support? Thanks & 73, Jim wb4gcs(a)amsat.org -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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WTB: SSB-electronic SP70
by Joseph Trombino, Jr 14 Jun '20

14 Jun '20

Howdy Gang. Want to buy an SSB-Electronic SP70 preamp for 432Mhz. Unit should be in good shape and working FB. Will pay with PayPal. Many thanks. 73, Joe W2KJ

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Cosmic signals in the 2m band
by Zach Metzinger 14 Jun '20

14 Jun '20

Here's an interesting article for y'all, and I noticed that they're listening right in one of our bands! https://phys.org/news/2020-06-scientists-billion-year-old-universe-dark-age… --- Zach N0ZGO

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