June 2009 - AMSAT-BB - mailman.amsat.org

Re: IC-910H low audio problem.
by Ronald G. Parsons 14 Jun '09

14 Jun '09

I discovered this with my 910H. If you compare the schematic with an older Icom transceiver, say the IC-756, you will notice that the voltage divider on pin 8 decreases the audio on that pin by a factor of about 50 from the IC-756! I thought of two "cures": 1. Modify the radio by replacing the offending resistor. 2. Modify my headset by bringing the line that would go to pin 8 outside the mic connector and run it to a 1/4" phone plug. I chose 2. I plug the phone plug into the nearby headphone jack when I use the headset, or pull it out to use the speaker. Works on both my 910 and 756. I was told by a person at Heil that Icom made that change to better use a TNC with the mic connector on the 910. Ron W5RKN > Date: Tue, 9 Jun 2009 05:21:35 +0300 > From: Kostas Ioannidis <kostas.ioannidis(a)gmail.com> > Subject: [amsat-bb] IC-910H low audio problem. > To: AMSAT-BB(a)amsat.org > Message-ID: > <6cd5903a0906081921k5cb111e0j945fc7b09e7d040(a)mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > According to the IC-910H manual, pin number 8 at the mic connector is > audio output (which varies according to af control). I connected a > pair of headphones at the pin but the audio is way to low and cannot > be used for listening. Is it normal? I thought that it was designed > for this purpose. Am I missing something in the menus? Thanks in > advance! > > > 73 de SW1IXP, Kostas Ioannidis >

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VP2V/K4SAT Will be OTA From Virgin Gorda 6/15 through 6/20
by RFI-EMI-GUY 14 Jun '09

14 Jun '09

Please listen for me on the LEO's this week in FM mode only. I will be the QRP station:. VP2V/K4SAT. I will be operating from St John USVI for a few days afterword using K4SAT. I will be operating the station secondary to other activities so likely won't be on every pass. -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Use only Genuine Interocitor Parts" Tom Servo ;-P

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Anyone has demo version of Cubesat structure ?
by William Leijenaar 14 Jun '09

14 Jun '09

Hi AMSATs, I am looking for some Cubesat structure that I can use for demonstration of my Ultra Small Lineat Transponder design. It should not be an expensive flight-model version. Its only for showing the idea how my transponder can be mount into a cubesat body. I can try to make some structure myself, but that takes lots of work and I need to get the precize sizes somehow. Maybe someone has ever made a Cubesat demo version ? My kind regards, William Leijenaar PE1RAH ---

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"Ultimate Charger" website
by Jim Jerzycke 14 Jun '09

14 Jun '09

Thanks to all who replied. I'm still getting 404'ed when I try to go to ultimatecharger.com, but thanks to LeRoy, KD8BXP, I was able to get the info I needed on the controller from cached pages at http://web.archive.org/web/20070524034301/www.ultimatecharger.com/. It looks like they have most of his info from the "Dishes for Amateurs" pages, including the links that were embedded within the pages. I have an LVB tracker, but it's not assembled yet, so I thought I'd dig out my "Satellite Tracker Senior" and use that one for Field Day, as I know it works. 73, Jim KQ6EA

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Got Yaesu 5400 rotor control box problem
by John Price 14 Jun '09

14 Jun '09

I have hauled out my spare 5400 rotor for field day and found I have a problem. The control box is not sending accurate readings to the computer. It works fine as far as the rotor and the meter readings. I know the problem is in the control box as the one I use for everyday operation works fine with this rotor. I have checked the voltages at the transformer and they are OK so I am now suspect of one or both of the pots that adjust output voltage. I when I connect it to just one side of the rotor I can not get it to adjust to 1023 in the calibration routine in the software. Connecting it to the other side shows the same result. What I do see is a value that bounces around at random. I guess my question is does this mean that I have two bad pots or is there some common connection between the AZ/EL output that would exhibit this result. Any ideas would be greatly appreciated. Thanks << John -- N4QWF Amateur Radio Operator AO-7,AO-27,FO-29,SO-50,AO-51,VO-52,ISS Email N4QWF(a)AMSAT.ORG Echolink nodes #110903 -L #388463 http://home.comcast.net/~n4qwf/site/ Formerly KC4AHW VK3FEZ Amsat Member #27845 DXCC #33,478 VUCC SAT #135 WAS SAT #296 51 on AO-51 #13 LON -79.256 LAT 37.459 Grid FM07il >From the Foothills of the Blueridge *Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming - "WOW, What a ride!"

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Re: VU2MKP Silent Key
by William Leijenaar 14 Jun '09

14 Jun '09

Hello AMSATs, I just wanted to write some message on AMSAT-BB, and then I read the sad message about silent key of Robert VU2MKP. It is a great lost for the HAM world. I made several contacts with Robert via the old bird AO-10, which was a great joy. Later when I was in Bangalore, India, I got the chance to meet him in person. I was very amazed to see how he uses his radios, and laptop computer with a small stick in his mouth. He did have lots of positive energy, even when he lost lots of his body functions. A great man and ham with real ham spirit. My condolences to his family, May his soul rest in peace, William Leijenaar PE1RAH ---

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RS-15 beacon this morning (mp3)
by Henk, PA3GUO 14 Jun '09

14 Jun '09

For those interested, here is how RS-15 sounded like this morning: http://www.pa3guo.com/rs15_cw_14june2009_0820utc.mp3 (12 seconds) Henk, PA3GUO http://www.pa3guo.com

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ND9M: Delaware
by claryco＠aol.com 14 Jun '09

14 Jun '09

I'll be QRV from Delaware on all passes usable with a hand-held antenna on Sunday, 14 June, starting with the first AO51 pass at 14/1140Z and ending with the last FO29 pass at 15/0226Z. All three FM birds plus FO29 and VO52 are on the agenda. There are 13 passes throughout the day that I'll be on, so there should be plenty of opportunity for contacts. Pse note that uring this trip, I'm able to do half duplex only and can manually tune only. The FM sats aren't a problem, but FO29 and VO52 will be a challenge since I can't properly adjust my TX for Doppler. I've already made a number of QSOs on the linear birds this way however, including a contact with AA5PK on FO29 tonight for his 50th state, so it's definitely "do-able". I'll leave Monday morning and head north a bit to put out FM29, then west to start running all FM0x and FM1x grids on a southbound track. CU on the birds! 73, Jim, ND9M Seaford, DE / FM28

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Gold plated contact
by Luc Leblanc 14 Jun '09

14 Jun '09

Did any one has ever try to solder on gold metal contact pin? Is the standard electronic solder is ok or? "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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"Ultimate Charger" website gone??
by Jim Jerzycke 14 Jun '09

14 Jun '09

Hi, everybody. Has anybody tried to reach the 'ultimatecharger' website? I need to get the info on one of his antenna controllers, and it appears the website is gone. Thanks, Jim KQ6EA

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