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

2.4 GHz Downconverters Are In Stock Again
by K5GNA＠aol.com 04 Jun '08

04 Jun '08

Hello All: My 2.4 GHz downconverters and corner reflectors are back in stock, ready for immediate shipment. I have just shipped the downconverters to all who were on my waiting list and had previously responded. Anyone interested in my downconverters or parts can check them out on my website -- it has been updated. _www.k5gna.com_ (http://www.k5gna.com) Please contact me for quotes on shipping at the website or at: _k5gna(a)aol.com_ (mailto:k5gna@aol.com) TNX & 73, Bob K5GNA **************Get trade secrets for amazing burgers. Watch "Cooking with Tyler Florence" on AOL Food. (http://food.aol.com/tyler-florence?video=4?&NCID=aolfod00030000000002)

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2.4 GHz Signal Sources & Downconverters
by K5GNA＠aol.com 04 Jun '08

04 Jun '08

To All: Thanks to all that have responded. I have a large number of 2.4 GHz weatherproof Signal sources available for $19.95, but I only had listed 2 at a time on Ebay (there listing fees are too high). I have increased the quantity, so they will be available for all those who want one. Ebay seller = K5GNA Webpage = _www.k5gna.com_ (http://www.k5gna.com) there is a link here at the top for my Ebay items. Anyone who doesn't want to use Ebay can contact me directly. Check them out on Ebay for pictures, links and other Info. The G0ORY links go into some detail on what other things that you can do with these Gardiner downconverters and how to get into them. I now have the 12 MHz computer crystals to ship with the sources at no extra cost. These put you at about 2400.020 MHz There are still plenty of the TSI 2.4 GHZ K5GNA downconverters available -- they will not be on Ebay for a while, just here on the AMSAT BB. TNX & 73, Bob K5GNA **************Get trade secrets for amazing burgers. Watch "Cooking with Tyler Florence" on AOL Food. (http://food.aol.com/tyler-florence?video=4?&NCID=aolfod00030000000002)

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Icom 706 FM Narrow
by K & R Yoksh 04 Jun '08

04 Jun '08

Hello, I discovered something last night while working AO-51 and wanted to share it with the group. Thanks for the many short QSOs on AO-51 last night, BTW. I use two Icom 706Mk2g radios as my satellite station. Although I've read through the manual for my radio many times, I wasn't aware that Icom included a wide and narrow FM capability in this radio. This is not to be confused with WFM receive (which this radio can also do), for commercial radio and TV audio reception. After checking out page 23 of the manual, I can better understand this, but honestly, it might have been a good idea for Icom to spell this out a little better! When selected, the narrow filter is active in both transmit and receive. According to Google, the wide FM setting has a maximum of 4.8 KHz deviation, and the narrow FM setting has a maximum of 2.4 KHz deviation. The standard AM/FM filter (FL-23) is 15 KHz wide, and the narrow filter (FL-94) is 8 KHz wide. Armed with this new piece of information, I experimented with using the narrow filter on my receive radio last night on AO-51 with very noticeable results! The filter eliminated much of the background noise, and I also noted that the S meter reading displayed typically 2 S-units higher with the narrow filter enabled, FWIW. If you use a 706 on the birds, you might want to check out menu M3, and select FIL while in FM mode. 73, Kyle Yoksh K0KN Olathe, Kansas

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TELECOMASIA
by Gopal Madhavan 04 Jun '08

04 Jun '08

I have been asked to coordinate all arrangements for the IARU exhibition stall in Bangkok Thailand in connection with Telecom Asia early September, and was wondering if we could get a small model of any of the recently launched satellites for the exhibition and also other printed material regarding satellite activity for distribution? If you have pictures of any of the launches etc we can add them to the moving display that is planned. On hearing from you I will send you the address in Bangkok where the material has to be sent. Thanks in advance Gopal VU2GMN Gopal Madhavan "Shreyas" Apartments 128(old63) Greenways Road Chennai - 600 028 Tel: 91 44 2493 7724 / 4230 3129 Mobile: 91 94440 18452 E-mail: vu2gmn(a)gmail.com

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AO-51 model is available
by Stefan Wagener 03 Jun '08

03 Jun '08

Hi folks, I had some questions regarding the AO-51, Delfi-C3 and other cardboard models. AO-51 (75% scale): Yes, it is available for download at: www.msig.ca/AO-51.html Yes, it is available for free (if you like it please donate to AMSAT). Delfi-C3: It will be available at the Delfi team website @ TU Delft. It is still a work in progress and I hope to have the prototype done in a few days. After that I will finish the pdf files for distribution. Yes, as mentioned above, once it is available and you like it, please consider a donation to AMSAT. Other models: I might look at P3E at one point once it is launched and final photos and details are available. No, it will not be a 1:1 scale ;-) Hope this helps, As always, have fun and enjoy the hobby. 73, Stefan VE4NSA

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Delfi-C3 model (Scale 1:1) coming soon
by Stefan Wagener 03 Jun '08

03 Jun '08

Hi folks, The next model of an amateur radio satellite is just around the corner. Thanks to the great folks from the TU Delft (Delfi-C3 team) and their timely information, a new cardboard model in the scale 1:1 is almost done. I am still playing with the antennas and writing the instructions. You can see the almost completed prototype at: http://www.wincube.ca/Delfi.html The model will be available as pdf files for you to print (and cut and glue) in the next few weeks from the Delfi-C3 website. Will let you know. So get your glue ready and during those rainy nights build a great model for the club station or your radio shack. Hope you look it. 73, Stefan VE4NSA

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Colorado Rep
by D. Mynatt 03 Jun '08

03 Jun '08

Any rep here in southern CO that would be willing to assist us in getting a comprehensive ground station setup? Dave ===== http://sciencecenter.no-ip.org SID ID: S-0258 APRS UI-View KA0SWT LAT: 38'16.278" N LON: -104'40.537" W Alt: 4780ft DM78

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RS-30-cw only?
by David 03 Jun '08

03 Jun '08

Hello All, Just listened to RS-30 pass over VK. Only heard CW telemetry on 435.315, didn't monitor 435.215. Which one has the 'wefax/sstv' type signal? Or is it only turned on over Russia? 73 de David VK5DG

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Cute-1.7 : FM Packets for 24hours
by Hiroki Ashida 03 Jun '08

03 Jun '08

Dear All, I'm Hiroki Ashida at Tokyo Institute of Technology (JQ1YCZ). I'd like to inform you about our satellite's operation. We started a long-run (continuous 24hours) of the APD sensor at 11:30, Jun 3 (UTC) and it will be turned off on 11:30, Jun 4(UTC). During the APD is turned on, the APD status packet can be heard everywhere in the world. FM packets are transmitted on 437.475MHz and packet formats are available in the following web-page. http://lss.mes.titech.ac.jp/ssp/cute1.7/fm_mode_apd_e.html 4A-51-31-59-54-43-3E-4A-51-31-59-43-5A-3A-D0-30-77-B8-03-16-99 For exapmle, according to an above APD status packet we can obtain informations as; 4A-51-31-59-54-43-3E-4A-51-31-59-43-5A-3A : Header(JQ1YTC>JQ1YCZ) D0 : APD Packet ID (Fixed) 30 : Status Code APD Status : Operational HV Status : Set Value = Output Value Temp Correction : Active Data Mode : Counter Valid Detector : APD A APD Gain : Gain 30 Threshold : 219mV 77 : Temperature 0x77 = 119 -> (119/255)*91.712-48.569 = -5.7 [degC] B8 : High Voltage 0xB8 = 184 -> (184/255)*396.5 = 286 [V] 03-16-99 : Counter 0x1699 = 5785 -> 5785 * 2^3 = 46280 Latest TLE from NORAD is; Cute-1.7 + APD II 1 32785U 08021C 08154.79960534 .00000134 00000-0 24077-4 0 664 2 32785 097.9934 214.7536 0014695 178.3289 181.7972 14.81362228 5275 Though the observation data will be stored in FRAMs, we'd like to know a real-time status of the APD during the observation. Your kind reports will be highly appreciated! Best Regards, Hiroki Ashida Cute-1.7 + APD II -- Hiroki Ashida <hiroki(a)lss.mes.titech.ac.jp> Laboratory for Space Systems Department of Mechano-Aerospace Engineering Tokyo Institute of Technology TEL/FAX : +81-3-5734-2644 Room 554, Ishikawadai 1st Bldg, Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku, Tokyo, Japan

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Field Day and D0-64
by kc6uqh 03 Jun '08

03 Jun '08

To All, I notice that the VU linear transponder is listed on the chart as functional but the report says non opreational. Looking for current info and and any info that pertains to possible Field Day operation of this bird. Thanks, Art, KC6UQH

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