June 2011 - AMSAT-BB - mailman.amsat.org

Re: G5500 change voltage supply
by Bill Dzurilla 01 Jun '11

01 Jun '11

Here is the mod to change Yaesu rotors to 220v: http://www.hamcity.com/store/pc/catalog/pdf/220vconversion.pdf But perhaps yours has a different transformer if it uses pin 3 for 117v. In the mod, pins 0 and 3 are for 220v. 73, Bill NZ5N > Subject: [amsat-bb] G5500 change voltage supply > > I have purchased a G5500. The control box have a > 117Vac label in the real > panel. I opened it and a wire is connected through > the fuse to the terminal > number 3 of the KT-30 transformer and the other wire > through the main switch > to the terminal number 1 of the KT-30 transformer. > > I am wondering how I should connect it to work with 220Vac > in Europe. > > Thanks in advance. ea4cyq(a)amsat.org

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SAT VUCC
by RONALD CADE 01 Jun '11

01 Jun '11

SAT VUCC standings now on LotW, June 1 2011 Ron, W6ZQ

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Re: Thrust bearing maintenance
by Edward R. Cole 01 Jun '11

01 Jun '11

At 04:19 AM 6/1/2011, Stephen E. Belter wrote: >I have an Yaesu GS-050 thrust bearing that has been installed for >about 15 years. The thrust bearing turns, but requires a lot of force. > >I disassembled the thrust bearing to find that the grease is very >sticky (think candy apple sticky), and not lubricative (if that is a word). > >Should I take it to an auto repair shop and ask them to degrease and >then lubricate similar to repacking a wheel bearing? > >What kind of grease should be used? > >Thanks and 73, Steve N9IP >-- >Steve Belter Steve, When I was building my tower#2 in 2008, I considered buying a Rohn TH-3 thrust bearing (about $200+) and was advised to look in ebay. I found a nice 3-inch ball-bearing radial-thrust bearing for about $35 (brand new). It has a zerk fitting for a grease gun to maintain the lubrication (which at the slow rotation of antennas is almost never). Ebay might be cheaper than a re-build. 73, Ed - KL7UW 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-testing*, 3400-? DUBUS Magazine USA Rep dubususa(a)hotmail.com ======================================

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History of OSCAR
by Clint Bradford 01 Jun '11

01 Jun '11

There is a WONDERFUL 103-slide presentation posted on the front page of the AMSAT-NA site. "AMSAT Slide Show Space Day 2011" is a 5.6MB .pdf, prepared by Perry Klein, W3PK and Dick Daniels, W4PUJ. It contains some great photographs from the archives on Project OSCAR and AMSAT. Truly a "must-view!" Clint Bradford, K6LCS http://www.work-sat.com

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Thrust bearing maintenance
by Stephen E. Belter 01 Jun '11

01 Jun '11

I have an Yaesu GS-050 thrust bearing that has been installed for about 15 years. The thrust bearing turns, but requires a lot of force. I disassembled the thrust bearing to find that the grease is very sticky (think candy apple sticky), and not lubricative (if that is a word). Should I take it to an auto repair shop and ask them to degrease and then lubricate similar to repacking a wheel bearing? What kind of grease should be used? Thanks and 73, Steve N9IP -- Steve Belter

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G5500 change voltage supply
by Juan Antonio Fernandez 01 Jun '11

01 Jun '11

I have purchased a G5500. The control box have a 117Vac label in the real panel. I opened it and a wire is connected through the fuse to the terminal number 3 of the KT-30 transformer and the other wire through the main switch to the terminal number 1 of the KT-30 transformer. I am wondering how I should connect it to work with 220Vac in Europe. Thanks in advance. ea4cyq(a)amsat.org

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AO51
by wa4hfn＠comcast.net 01 Jun '11

01 Jun '11

Did not hear AO51 this morning 12.13 utc 150/880? WA4HFN em55

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Flames on Endeavor
by Kevin Deane 01 Jun '11

01 Jun '11

Is that normal?? If anyone was watching that is... Kevin

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ISS to be reboosted June 3rd
by Alan P. Biddle 01 Jun '11

01 Jun '11

According to Roscosmos, the ISS will have its orbit raised 3.74 km Friday. This will result in a "slippage" of predicted times of approximately 70 seconds per day until the Keps catch up. The AMSAT NASA.ALL Keps will probably not reflect this until next week, so be certain to update from Celstrak or Space Track. http://www.federalspace.ru/main.php?id=2&nid=11848&lang=en 73s, Alan WA4SCA

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STS-134 Lands
by Clint Bradford 01 Jun '11

01 Jun '11

In case you missed it this morning, here's a few screenshots from NASA-TV of the Endeavour after it landed. http://tinyurl.com/STS-134-lands Clint, K6LCS

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