June 2018 - AMSAT-BB - mailman.amsat.org

cube sat model
by Bob- W7LRD 07 May '21

07 May '21

Hi All-Is there a cube sat model, mock up etc, available anywhere 73 Bob W7LRD

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TLEdoctor program to check for preliminary TLE data
by Jarda 06 Aug '19

06 Aug '19

The program can easily detect and fix the TLE preliminary data errors for working in satellite programs after launching the satellite in orbit The original version of the program released before launching Fox-1D works in Windows-7 and higher. Version that works in Windows XP is now added. The program name for Win-XP changes to TLEdoctor. Both programs can be downloaded at http://oscar.ok2gz.eu/fox1d.php 73 Jarda ok2gz --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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Fw: AO73 Mode change
by Graham Shirville 11 Jun '19

11 Jun '19

Hi folks, AO73/FUNcube is now in amateur mode for the weekend with the transponder on! Please see below for all FUNcube mission info 73s Graham G3VZV and the FUNcube team. ++++++++++++++++++++++++++++++++++ FUNcube frequencies and other details ++++++++++++++++++++++++++++++++++ AO-73 FUNcube-1 The transponder is normally operational only when the satellite is in eclipse, ie the solar panels are NOT being illuminated. During weekends (from pm Fridays UTC to PM Sundays UTC) the transponder is operational 24/7. When the transponder is switched off, the telemetry beacon is on full power, when the transponder is on the beacon it is on low power. During holidays, eg Christmas, New Year, Easter, etc, the transponder maybe activated for extended periods. Watch AMSAT-BB for announcements which are usually made on Friday evenings (UTC) The nominal transponder frequencies are: Uplink: 435.150 - 435.130 MHz LSB (Inverting) Downlink: 145.950 - 145.970 MHz USB Telemetry Tx: 145.935 MHz BPSK (The passband may be up to 15kHz higher depending on on-board temps. Lower temperatures give higher freqs!) FUNcube-2 (aka FUNcube on UKube) The FUNcube-2 sub-system continues to operate autonomously and, almost continuously, in amateur mode. The transponder is operational and the telemetry downlink is functioning with about 70mW output. The FUNcube-1 Dashboard does not correctly display the telemetry but it does correctly decode the data and uploads it to the FUNcube Data Warehouse from where it can be examined. Most of the real time data channels are operational and these include battery voltages, temperatures and ADCS data coming via the main On Board Computer (OBC). The transponder is interrupted for a few seconds every 2 minutes when the other transmitter sends its CW beacon and, occasionally, for a few seconds when the main OBC reboots (approx seven times each orbit). The nominal transponder frequencies are: Uplink: 435.080 - 435.060 MHz LSB (Inverting) Downlink: 145.930 - 145.950 MHz USB Telemetry Tx: 145.915 MHz BPSK (The passband may be up to 10kHz higher depending on on-board temps. Low temperatures give higher freqs!) EO79 FUNcube-3 Due to power budget constraints the transponder cannot be operational 24/7 and an orbit specific schedule has been developed. The transponder will commence operation 27 minutes after the spacecraft enters sunlight and will stay on for a period of 25 minutes. This schedule may be modified in future months as a result of experience. The nominal transponder frequencies are: Uplink: 435.0723-435.0473 MHz LSB (Inverting) Downlink: 145.946-145.971 MHz USB Further detailed info on EO79 transponder frequencies is at: https://amsat-uk.org/2016/11/10/eo79-funcube-3-transponder-commences-regula… EO88/Nayif-1/FUNcube-5 EO88 is presently operating in autonomous mode. The transponder is operational when the satellite is in eclipse, ie the solar panels are NOT being illuminated. When the transponder is switched off, the telemetry beacon is on full power, when the transponder is on the beacon it is on low power. The transponder frequencies are: Uplink: 435.045 – 435.015 MHz LSB (inverting) Downlink: 145.960-145.990 MHz USB Telemetry Tx: 145.940MHz All FUNcube transponders are sponsored by AMSAT-UK and AMSAT-NL. We are very grateful for the assistance given by Innovative Solution In Space Bv, The Netherlands. _______________________________________________ Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

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FUNcube-1/AO73 Operations
by Graham Shirville 15 Mar '19

15 Mar '19

Hi All,Just to confirm that AO73 is now in continuous education mode with the high power telemetry. Amateur mode may be expected to resume on Thursday morning(UTC)73GrahamG3VZV

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EQUiSat Optical Beacon CubeSat
by Trevor . 17 Oct '18

17 Oct '18

Students at the Ivy League Brown University are developing an amateur radio satellite EQUiSat that will carry a Xenon Flash Tube (XFT) subsystem to act as an Optical Beacon that should be visible to the unaided eye of observers on Earth. See http://www.uk.amsat.org/?p=10635 73 Trevor M5AKA AMSAK-UK http://www.amsat-uk.org/ ----

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Is there an AMSAT Brandmeister Talkgroup?
by K5VOU 25 Jul '18

25 Jul '18

I have discovered how easy it is to talk to ham around the world using the Brandmeister network and an inexpensive hot spot device. Right now I am listening to TG91 which is world wide and really enjoying it. I have seen several special TG listed and wondered if any AMSAT organization has a TG and if so what is the number? 73, Tom K5VOU LM 2032

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inquiry about japanese BIRDS - are they still active on comms?
by Samudra Haque [TTLLC] 30 Jun '18

30 Jun '18

I'm curious about this one: https://en.wikipedia.org/wiki/BRAC_Onnesha, is it still active and what is the primary site for its mission status? 73 de N3RDX (S21X) The information contained in this communication is confidential, may be privileged and is intended for the exclusive use of the above named addressee(s). If you are not the intended recipient(s), you are expressly prohibited from copying, distributing, disseminating, or in any other way using any information contained within this communication. If you have received this communication in error please contact the sender by telephone or by response via mail. We have taken precautions to minimize the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses.

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Yaesu G-5400B Followup to Problem
by Richard Lawn 30 Jun '18

30 Jun '18

Once again, thanks to everyone who sent me links, suggestions and manual copies. It actually was an easy fix. I brought everything in to the bench and opened up the EL rotor to find what appeared to be some very poor solder joints on the wire side of the terminal strip. WX I guess over about 25 years had done a number on these joints. I resoldered them and hooked up a short pigtail to the rotor and voila...full rotation up and down!! I've also looked carefully at the AZ rotor and using the same pigtail check it out and all is still well with it. TNX again for your help and I may now be able to work a few birds from my summer QTH in FN21. 73 Rick, W2JAZ

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[Video] Space Comms is for beginners
by John Brier 30 Jun '18

30 Jun '18

https://youtu.be/1CkRuEs0eUg Sometimes people I contact on satellites for the first time are very excited to contact me. These are people that have been watching my videos for a while, often new hams and/or new satellite operators, who hoped they would contact me one day, and then they do. They often tweet their excitement or express it on air. This video documents a couple of times that happened recently with Matt, VO1WEB, and Trevor, KD9IXX. This is a celebration of new satellite ops and an explanation of the purpose of this channel and my intention to make more how to videos aimed at beginning satellite operators. Nifty Ham Radio Accessory HT stand: http://bit.ly/NiftyHTstand 2018-05-25 - 2335 UTC - SO-50 2018-05-12 - 2018 UTC - AO-85 <-- N6UA can be heard in the clip I used from this pass 2018-05-27 - 0140 UTC - SO-50 2018-06-02 - 2335 UTC - SO-50 73, John Brier KG4AKV

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Problem getting SDR-RADIO RTLUSB to work
by aj9n＠aol.com 30 Jun '18

30 Jun '18

Hi all, I recently had a hard drive crash in my laptop and have been in the process of re-installing everything. I thought I had re-installed SDR-RADIO V2 RTL-USB (I used the 20130209 version) for 64 bit correctly but when I go to run SDRConsole (V2) I get the following error message: SDRConsole.exe - Ordinal Not Found The ordinal 14056 could not be located in the dynamic link library C:\Program Files\SDR-RADIO-PRO.com\SDRConsole.exe. The program used to run just fine until I had to rebuild everything. Does anyone know what the fix might be? I am running Windows 10 Pro with an Intel i5-4210U CPU 1,70GHz 2.40GHz, 64 bit, with 8GB of RAM installed. I am wondering if I am missing something that didn't get installed when the new Windows was installed on the laptop. I was able to get HDSDR and SDRSharp to install and both work just fine. Thanks for the help. 73, Charlie Sufana AJ9N

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