July 2008 - AMSAT-BB - mailman.amsat.org

FO29 today
by Robert Turlington 29 Jul '08

29 Jul '08

Good afternoon FO29 was working well this afternoon managed to work Joe K3SZH at 1400 utc + called W4MVBRegards Robert G8ATE _________________________________________________________________ The John Lewis Clearance - save up to 50% with FREE delivery http://clk.atdmt.com/UKM/go/101719806/direct/01/

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Space Symposium second Call for Papers
by Daniel Schultz 29 Jul '08

29 Jul '08

2008 AMSAT North America Space Symposium 24-26 October 2008, Atlanta, Georgia - Call for Papers This is the second call for papers for the 2008 AMSAT Space Symposium and Annual Meeting to be held October 24-26, 2008 in Atlanta, Georgia. Proposals for papers, symposium presentations, and poster presentations are invited on any topic of interest to the amateur satellite program. An emphasis for this year is an educational outreach to middle and high school students. Another topic if interest is using amateur satellite tracking systems to monitor deep space network objects. In particular, papers on the following topics are solicited: • Students & Education • ARISS • AO-51 • P3E • Eagle • Deep Space Network monitoring • Any additional satellite-related topics. We request a one-page abstract as soon as possible. Camera ready copy on paper or in electronic form will be due by September 1, 2008 for inclusion in the printed symposium proceedings. Papers received after this date may not be included in the printed proceedings. Abstracts and papers should be sent to n8fgv(a)amsat.org

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ao-51 data/power
by Mr Jeffrey Ross 29 Jul '08

29 Jul '08

hi folks, I better state that I'm looking for the 9600 baud downlink, sry. enough power yet? kc8gkf

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Delfi N3xT
by G0MRF＠aol.com 29 Jul '08

29 Jul '08

In a message dated 29/07/2008 01:26:52 GMT Standard Time, alancresswell(a)xtra.co.nz writes: Note that Delfi has been in full sun for more than half its orbit before it hits ZL and progressively loses the sun before going into eclipse South of ZL so the above may not represent what happens as Delfi comes out of eclipse in the Northern hemisphere. Hi Alan / Ib That it is still operational over ZL after half an orbit is very encouraging. Perhaps we have seen the last of the 'feature' of turning off shortly after coming out of eclipse. As the team predicted. At Surrey the team announced the Delfi N3XT project (pronounced 'next'). The satellite will be a 3cube design but with bigger panels and 3 axis stabilization and a power budget much greater than DO-64. They are looking for ideas to put on the mission to give some amateur radio functionality in addition to the science they have planned. V down link and U uplink will be used for communications. I wonder if 'we' could suggest something in addition to the obvious transponder. - September deadline for the mission plan. Perhaps the BB could come up with a list of suggestions. Perhaps with 3 axis control, a small camera with an image to slowscan converter would be good. - Then the team can use it to confirm the pointing accuracy of the satellite and potentially use the GENSO network to issue a 'take picture' command. Thanks David

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FO29 WOW!
by Dave Guimont 28 Jul '08

28 Jul '08

FO29 is back!! TNX JARL..... Amateur satellite radio communication is back.. Besides VO52.. Absolutely wonderful to have had a very nice contact with W6ASL, Jim in Concord, CA... A nice chat with NO ONE, complaining about us hogging the frequency... I used about 3 watts up the pipe with ~10 db antenna.. BANDWIDTH!!!!!! 73, Dave, WB6LLO dguimon1(a)san.rr.com Disagree: I learn.... Pulling for P3E...

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FO-29 on July 28
by Luciano G Nachif 28 Jul '08

28 Jul '08

Did anybody hear FO-29 on Monday night 21 UTC? I tried it over Brazil on orbit # 2,298 but not a word on either its beacon or transponder... 73, PT9KK

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operational data sats
by Mr Jeffrey L Ross 28 Jul '08

28 Jul '08

hi folks, I was just reading the 2003 arrl handbook and they say these data sats are operational. ao-16 lo-19 io-26 fo-29 uo-11 uo-22 go-32 mo-46 ao-40 are any of these sats really operational via data? could they all be non-operational by now? will go look myself on the amsat web site to see if any of them or all of them are listed as operational. sure be nice to have a data sat we can work. kc8gkf

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Re: FO-29 telemetry
by SV1BSX 28 Jul '08

28 Jul '08

Hi Keith, N4ZQ I agree with you, however how can we prevent somebody to use the Satellite into Eclipse? Fortunately, the Satellite comes into Eclipse over populated areas -like Europe- before and after the midnight, so the traffic is minimal. That's good ! On the other hand, there are several areas where the Satellite has a terrible "jamming" on the Uplink, in the middle of the night. I have observed that, over M.East and W.Asia sometimes the Satellite is fully noisy, FMing too. Probably because the Satellite subzone between 145.8-146 MHZ is fully occupied by pirates, old VHF wireless phones etc. So, even without Ham-users, sometimes the satellite is fully overloaded. That is very bad in case where the Satellite is into Eclipse but, definitely we can not much to do in order to prevent that. As I remember, this Satellite has a function for electric management (UVC), in order to "Turn-ON" automatically the transponder, when came on Sunlight . Unfortunately, on UVC appeared a malfunction @ April'07. Normally, if the batteries are discharged and the satellite comes into Eclipse, the transmitter is turned OFF by the UVC. It is designed so that later an analog system transmitter becomes ON automatically when the terminal voltages of the battery exceed a set value after the power is available from the Solar Panels. However, it appears likely that a malfunction occurs for this function, and the terminal voltage cannot turn-ON the transmitter even if it exceeds the set value - unless commanded from the JARL's ground station. Therefore, without UVC-function and by carrying 12 years old Batteries, the Satellite is "naked". Even without traffic from Ham-operators during the Eclipse, it is not sure if that prolongs the FO-29's life. 73, Mak SV1BSX ----- Original Message ----- From: "Keith N4ZQ" <n4zq(a)netzero.net> To: <sv1bsx(a)yahoo.gr> Sent: Monday, July 28, 2008 3:25 PM Subject: Re: [amsat-bb] Re: FO-29 telemetry Very Interesting Data you collected, Mak. Maybe it should be suggested that if FO-29 is in eclipse, that it shouldn't be used. That might prolong it's life. What do you think ? Keith N4ZQ -- "SV1BSX" <sv1bsx(a)yahoo.gr> wrote: Hi Domenico, i8CVS last night I collected the Telemetry from FO-29. Date 27 July 2008, Orbit #58990. AOS 21:27, TCA 21:34, LOS 21:41. It is very interesting to point out that, the most part of TLM collected into Eclipe ! If I am not wrong, just the "Data1" is on Sunlight and the rest DATA on Eclipse. At 21:32 the FO-29 came on the dark, 2 minutes before the TCA. The confirming of Sunlight on "Data1" is obvious also by Solar-Panel Current (= 1000.0 mA). Also the battery has the biggest Voltage (16.4 ). In the next "Data 2,3,4, 5 & 6" where the FO-20 was on Eclipse, the Solar-Panel Current is just 9.8 mA. However, the battery voltage is droped down from 16.4 V (Data1 on Sunlight) to 14.2 V (Data 6 on Eclipse). That means 2.2 Volts lower in about 5 mins. I can't say if that is normal or not. It's just my notice and probably is OK that but, it should be very interesting if we can find an older TLM-Data into Eclipse in order to compare it with this one. Finally, the following data are 100% OK. As you know dr Domenico, I am "old fashion" CW operator by using pencil and paper, however I recorded my reception and I confirmed it twice, in order to eliminate any possible fault. Here is the collected Telemetry DATA: HI HI 22 E2 88 D5 8F 05 05 25 00 24 01 01 66 63 98 98 B0 5C B6 B1 B8 BA B9 HI HI 22 E2 88 D5 8F 05 05 25 00 24 01 01 01 83 8B 8A 95 85 B6 B0 B8 BA B9 HI HI 22 22 88 D5 8F 05 05 25 00 24 01 01 01 83 87 86 91 8B B6 B0 B7 B9 B9 HI HI 22 22 88 D5 8F 05 05 25 00 24 01 01 01 84 85 84 8F 7A B5 B0 B7 B9 B9 HI HI 22 22 88 D5 8F 05 05 25 00 24 01 01 01 83 85 83 8E 62 B5 B0 B7 B9 B9 HI HI 22 22 88 D5 8F 05 05 25 00 24 01 01 01 85 84 82 8D 95 B5 B0 B7 B9 B9 ------- Data 1 --------- Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode AUTO PCU Level 3 : Battery Mode TRIC Battery Logic TRIC : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 490.2 [nT] GAS-X 490.2 [nT] Solar Panel Current 1000.0 [mA] Battery Current -59.6 [mA] Battery Voltage 16.4 [V] Battery Middle Voltage 7.3 [V] Bus Voltage 17.3 [V] Analog Tx Power 499.9 [mW] Structure Temp. 1 11.2 [C] Structure Temp. 2 13.1 [C] Structure Temp. 3 10.4 [C] Structure Temp. 4 9.6 [C] Battery Cell Temp. 10.0 [C] --------- Data 2 --------- Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode AUTO PCU Level 3 : Battery Mode TRIC Battery Logic TRIC : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 490.2 [nT] GAS-X 490.2 [nT] Solar Panel Current 9.8 [mA] Battery Current 567.6 [mA] Battery Voltage 15.0 [V] Battery Middle Voltage 6.6 [V] Bus Voltage 14.6 [V] Analog Tx Power 766.4 [mW] Structure Temp. 1 11.2 [C] Structure Temp. 2 13.5 [C] Structure Temp. 3 10.4 [C] Structure Temp. 4 9.6 [C] Battery Cell Temp. 10.0 [C] --------- Data 3 --------- Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode AUTO PCU Level 3 : Battery Mode FULL Battery Logic FULL : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 490.2 [nT] GAS-X 490.2 [nT] Solar Panel Current 9.8 [mA] Battery Current 567.6 [mA] Battery Voltage 14.5 [V] Battery Middle Voltage 6.5 [V] Bus Voltage 14.2 [V] Analog Tx Power 805.4 [mW] Structure Temp. 1 11.2 [C] Structure Temp. 2 13.5 [C] Structure Temp. 3 10.8 [C] Structure Temp. 4 10.0 [C] Battery Cell Temp. 10.0 [C] --------- Data 4 --------- Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode AUTO PCU Level 3 : Battery Mode FULL Battery Logic FULL : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 490.2 [nT] GAS-X 490.2 [nT] Solar Panel Current 9.8 [mA] Battery Current 587.2 [mA] Battery Voltage 14.3 [V] Battery Middle Voltage 6.4 [V] Bus Voltage 14.0 [V] Analog Tx Power 694.9 [mW] Structure Temp. 1 11.6 [C] Structure Temp. 2 13.5 [C] Structure Temp. 3 10.8 [C] Structure Temp. 4 10.0 [C] Battery Cell Temp. 10.0 [C] --------- Data 5 --------- Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode AUTO PCU Level 3 : Battery Mode FULL Battery Logic FULL : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 490.2 [nT] GAS-X 490.2 [nT] Solar Panel Current 9.8 [mA] Battery Current 567.6 [mA] Battery Voltage 14.3 [V] Battery Middle Voltage 6.3 [V] Bus Voltage 13.9 [V] Analog Tx Power 538.9 [mW] Structure Temp. 1 11.6 [C] Structure Temp. 2 13.5 [C] Structure Temp. 3 10.8 [C] Structure Temp. 4 10.0 [C] Battery Cell Temp. 10.0 [C] --------- Data 6 --------- Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode AUTO PCU Level 3 : Battery Mode FULL Battery Logic FULL : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 490.2 [nT] GAS-X 490.2 [nT] Solar Panel Current 9.8 [mA] Battery Current 606.8 [mA] Battery Voltage 14.2 [V] Battery Middle Voltage 6.3 [V] Bus Voltage 13.8 [V] Analog Tx Power 870.4 [mW] Structure Temp. 1 11.6 [C] Structure Temp. 2 13.5 [C] Structure Temp. 3 10.8 [C] Structure Temp. 4 10.0 [C] Battery Cell Temp. 10.0 [C] ======================== END of message ================== 73 de Mak, SV1BSX

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WISPDDE and IC-910H
by Sion Chow Q. C. (9W2QC) 28 Jul '08

28 Jul '08

Dear All, I migrating my satellite PC to a new maching, both of which uses Windows XP professional edition. All along, I have been using WISP and WISPDDE client for rotator and doppler tracking and plan to continue using the same software. Rotator control is working great here with the LVB tracker and Yaesu G-5500. However, doppler is not working as how it should be. For this, I use the CI-V cable from G4ZLP which was working perfectly OK on the old machine. I have configured WISPDDE client to IC-910H as radio 1. However, WISPDDE gives errors (when the pass starts, and frequency is passed from WISP to WISPDDE client via DDE) like "Unable to cancel duplex command" and some other errors whenever "Bidirectional interface" is enabled. If "Bidirectional interface" is unchecked, everything works fine. I cant this enabled (causes WISPDDE client to hang up), so for now I have to let it be disabled. I use the IC-910H in satellite mode with this setup, as this is required to get the downlink on the top (RX) and uplink on the bottom (TX). Would be glad if anyone could help me on this matter. Although this is not a serious trouble, I cant get WISPDDE to recognise small changes/compensation made using the VFO knob on the IC-910H especially when copying CW satellites. Also, in this configuration, IC-910H could not switch bands automatically. Say for example, IC-910H is set for TOP band, 70 CM RX, Bottom Band, 2M TX. This works well automatically for Mode J satellites like AO-51 and GO-32. But when ISS passes comes in, it will not reverse the top and bottom bands. (I have configured 2M on top (RX - 145.800 MHz), 70CM on the bottom (TX - 437.800 MHz) for cross band repeater configuration). The M/S key on the IC-910H has to be pressed to reverse the top and bottom bands before the pass for doppler correction to be done correctly. In other words, I have to ensure the downlink and uplink bands are set properly on the radio's display before the pass. This is really a problem for ISS SATGATE and automated satellite reception operation. Would really appreciate any pointers here. Thank you very much in advance. 73, Sion Chow Q. C., 9W2QC.

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F.S.Items
by Anna Osborn 28 Jul '08

28 Jul '08

All the items I listed but the power supply have been sold, thanks everyone , 73, Anna

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