- AMSAT-BB - mailman.amsat.org

Re: Yaesu g 5500 rotator
by Pat Kilroy 27 Dec '23

27 Dec '23

Silly question? Are you sure that it is the Yaesu motor that failed and NOT the bearings? I must ask because I saved a bundle when I had to replace the bearings a few years ago. I took the opportunity to clean out the inside of the housing and repack the bearings with LOW TEMPERATURE grease. The rotators have been working like in mint condition ever since! Cheers, Pat N8PK Sykesville, Md. On Wed, Dec 27, 2023 at 4:22 PM mikflathead--- via AMSAT-BB < amsat-bb(a)amsat.org> wrote: > I believe someone commented they rewound there motor. Not sure how hard > that would be. > > On Wednesday, December 27, 2023 at 04:06:46 PM EST, nick via AMSAT-BB < > amsat-bb(a)amsat.org> wrote: > > > I have a bad elevation motor on my g5500 rotator. Yaesu is out of stock > will one of the other motors from a different model work? Is there any > other source for motors other than Yaesu? > > > > ----------------------------------------------------------- > > 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. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org > > ----------------------------------------------------------- > > 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. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org

1 0

Re: Yaesu g 5500 rotator
by J. Hunt 27 Dec '23

27 Dec '23

Hi everyone, Would like to share a technical note.The Yaesu G5500 is a fine rotor, but not weather sealed. The two metal shells are clamped together and will leak. I have taken apart other failed rotors, always the same problem - water ingress. I sealed mine up prior installation. Thanks n 73,JamesKI5DQ On Wednesday, December 27, 2023 at 04:30:55 PM CST, Curt Pikschus via AMSAT-BB <amsat-bb(a)amsat.org> wrote: Depending on if yours is the AC or DC version, HRO has plenty of the AC version Yaesu elevation replacement motors.I have purchased them in the past and they work well. 73 Curt N0GVK On Dec 27, 2023, at 3:23 PM, mikflathead--- via AMSAT-BB <amsat-bb(a)amsat.org> wrote: I believe someone commented they rewound there motor. Not sure how hard that would be. On Wednesday, December 27, 2023 at 04:06:46 PM EST, nick via AMSAT-BB <amsat-bb(a)amsat.org> wrote: I have a bad elevation motor on my g5500 rotator. Yaesu is out of stock will one of the other motors from a different model work? Is there any other source for motors other than Yaesu? ----------------------------------------------------------- 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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org ----------------------------------------------------------- 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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org ----------------------------------------------------------- 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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org

1 0

Re: Yaesu g 5500 rotator
by Curt Pikschus 27 Dec '23

27 Dec '23

1 0

Re: Yaesu g 5500 rotator
by mikflathead＠aol.com 27 Dec '23

27 Dec '23

I believe someone commented they rewound there motor. Not sure how hard that would be. On Wednesday, December 27, 2023 at 04:06:46 PM EST, nick via AMSAT-BB <amsat-bb(a)amsat.org> wrote: I have a bad elevation motor on my g5500 rotator. Yaesu is out of stock will one of the other motors from a different model work? Is there any other source for motors other than Yaesu? ----------------------------------------------------------- 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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org

1 0

Yaesu g 5500 rotator
by nick 27 Dec '23

27 Dec '23

I have a bad elevation motor on my g5500 rotator. Yaesu is out of stock will one of the other motors from a different model work? Is there any other source for motors other than Yaesu?

1 0

TEVEL-3
by david.greenberg 27 Dec '23

27 Dec '23

Hello All, TEVEL-3 FM transponder has been activated, starting from today, 27.12.23 19:35U for 72 hours.73,David 4X1DGנשלח מה-Galaxy שלי

1 0

ARISS News Release No. 23-67
by David Jordan 27 Dec '23

27 Dec '23

ARISS News Release No.23-67 Dave Jordan, AA4KN ARISS PR aa4kn(a)amsat.org FORIMMEDIATE RELEASE Six US Schools Moved Forward inARISS Selection Process December27, 2023: Amateur Radio on the International Space Station (ARISS) is pleasedto announce the schools/host organizations selected for the July-December 2024 window.A total of 6 of the submitted proposals during the recent proposal window havebeen accepted to move forward in the processes of planning to host a scheduledamateur radio contact with crew on the ISS. The primary goal of the ARISSprogram is to engage young people in Science, Technology, Engineering, Arts andMath (STEAM) activities and raise their awareness of space communications,radio communications, space exploration, and related areas of study and careerpossibilities. TheARISS program anticipates that NASA will be able to provide schedulingopportunities for the 6 US host organizations during the July-December 2024 timeperiod. They are now at work completing an acceptable equipment plan thatdemonstrates their ability to execute the ham radio contact. Once theirequipment plan is approved by ARISS, the final selected schools/organizationswill be scheduled as their availability and flexibility match up with thescheduling opportunities offered by NASA. Theschools and host organizations are: | Coastal Community School | Satellite Beach, FL | | Computer Museum of America | Roswell, GA | | Kopernik Observatory | Vestal, NY | | Immaculate Heart of Mary School | Wayne, NJ | | Magnet Innovation Center | Inlet Beach, FL | | Midlands STEM Charter School | Winnsboro, SC | Amateur Radio on the InternationalSpace Station (ARISS) is a cooperative venture of international amateur radiosocieties and the space agencies that support the International Space Station(ISS). In the United States, sponsors are the American Radio Relay League(ARRL), Amateur Radio Digital Communications (ARDC), Radio Amateur SatelliteCorporation (AMSAT), NASA’s Space Communications and Navigation program (SCaN)and the ISS National Lab—Space Station Explorers. The primary goal of ARISS isto promote exploration of science, technology, engineering, the arts, and mathematicstopics. ARISS does this by organizing scheduled contacts via amateur radiobetween crew members aboard the ISS and students. Before and during these radiocontacts, students, educators, parents, and communities take part in hands-onlearning activities tied to space, space technologies, and amateur radio. Formore information, see http://www.ariss.org . MediaContact: DaveJordan, AA4KN ARISSPR Findus on social media at: Twitter:ARISS_Intl Facebook:facebook.com/ARISSIntl Instagram:ariss_intl Mastodon:[email protected] Checkout ARISS on Youtube.com.

1 0

ISS Passes for SSTV that will be visible from ZL
by Wendy and Terry Osborne 27 Dec '23

27 Dec '23

Hi Folks, Just checked that all 4 ISS passes that will be uploaded by VK4KHZ will be visible from New Zealand as well. See: https://twitter.com/ARISS_Intl/status/1739718046296461787 73, Terry ZL2BAC

1 0

Re: Need advice on circular polarized antennas
by Pat Kilroy 26 Dec '23

26 Dec '23

Hey, Joe, You are quite right when one has only linearly polarized antennas at hand, switching V <=> H and vice versa, either by twisting the one antenna to different planes or actually switching between two or more linears in different planes, can make all the difference in the world to your reception strength and quality. Keep up the great work and in thinking these fascinating ideas through. It's learning. It's fun! Pat N8PK On Tue, Dec 26, 2023 at 1:08 PM Joseph Amato <jamato(a)colgate.edu> wrote: > Thanks, Ed and Pat. I’m inclined to agree. I can’t see how switching > RHCP <=> LHCP is going to make any difference if the spacecraft is > transmitting a linearly polarized signal. Others I’ve heard from disagree > with that, but I’m inclined to opt for simplicity, switching V <=> H > polarization with two Yagis, or wiring the two yagis for CP (either sense), > seems adequate. Joe > > On Dec 25, 2023, at 5:58 PM, Pat Kilroy via AMSAT-BB <amsat-bb(a)amsat.org> > wrote: > > I HAVE FOUND that *RHCP <=> LHCP switching* is not worth the added > complexity, RF losses, cost, and lack of reliability for most Amateur Radio > applications. Exception: If you are running an official ARISS Telebridge > ground station, an AMSAT OSCAR command station or perhaps a Primary SatNOGS > ground station. My 2 USD cents. Just sayin'! DE Pat N8PK-FM19 > > > On Sun, Dec 24, 2023 at 2:20 PM Eduardo PY2RN via AMSAT-BB < > amsat-bb(a)amsat.org> wrote: > >> Just make it polarization switchable: vertical / horizontal, simpler and >> almost same result. >> >> 73 >> >> Merry Christmas to all. >> >> Ed PY2RN >> >> On Sunday, December 24, 2023 at 02:08:32 PM GMT-3, Joseph Amato via >> AMSAT-BB <amsat-bb(a)amsat.org> wrote: >> >> >> I’m looking for some advice on antennas for 2 m/70 cm satellite >> operation. Presently, I have home-brew yagis for each band, horizontally >> polarized. To eliminate fading due to satellite rotation, I want to >> replace these antennas with circularly polarized ones. But the new >> antennas need to be relatively lightweight, because I have to lug them up >> on a ladder to mount them, and, well, I’m not as young as I used to be. I >> have been considering the WiMo circular polarized antennas (#18010 and >> 18011), but would first like to hear from people who have experience with >> them. I like to build things myself, but the WiMo design looks cleverer >> than anything I’ve been able to come up with so far. Any advice? Thanks! >> >> Joe K1MNY >> >> ----------------------------------------------------------- >> >> 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. >> Acceptable Use and Privacy Policies available at >> https://www.amsat.org/about-amsat/ >> >> View archives of this mailing list at >> https://mailman.amsat.org/hyperkitty/list/[email protected] >> To unsubscribe send an email to amsat-bb-leave(a)amsat.org >> Manage all of your AMSAT-NA mailing list preferences at >> https://mailman.amsat.org >> >> >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> >> Virus-free.www.avast.com >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> >> >> ----------------------------------------------------------- >> >> 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. >> Acceptable Use and Privacy Policies available at >> https://www.amsat.org/about-amsat/ >> >> View archives of this mailing list at >> https://mailman.amsat.org/hyperkitty/list/[email protected] >> To unsubscribe send an email to amsat-bb-leave(a)amsat.org >> Manage all of your AMSAT-NA mailing list preferences at >> https://mailman.amsat.org > > > > -- > > > Pat Kilroy 1 > > > > > ----------------------------------------------------------- > > 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. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org > > > -- Pat Kilroy 1

1 0

ARISS News Release No. 23-69
by David Jordan 26 Dec '23

26 Dec '23

ARISS News Release No.23-69 Dave Jordan, AA4KN ARISS PR aa4kn(a)amsat.org FORIMMEDIATE RELEASE 2023 Year End SSTV Event! December 26, 2023 — AmateurRadio on the International Space Station (ARISS) announces a special SSTVexperiment to be held this week. The ISS Voice Repeater willbe our downlink and several ARISS selected ground stations around the worldwill serve as SSTV uplink stations. Two special images will be sent on437.800 MHz using PD120 formatting. This limited experiment will be conducted on several passes over Europe,Australia and the USA between Wednesday Dec. 27 to Saturday Dec. 30, 2023. We hope radio enthusiasts will download the images and follow along with theevent. We appreciate all hams holding off from using the repeater forvoice contacts during the event. Watch www.ariss.org and ARISS social forpass information and more beginning on Tuesday Dec. 26. About ARISS: Amateur Radio on the InternationalSpace Station (ARISS) is a cooperative venture of international amateur radiosocieties and the space agencies that support the International Space Station(ISS). In the United States, sponsors are the American Radio Relay League(ARRL), Amateur Radio Digital Communications (ARDC), Radio Amateur SatelliteCorporation (AMSAT), NASA’s Space Communications and Navigation program (SCaN)and the ISS National Lab—Space Station Explorers. The primary goal of ARISS isto promote exploration of science, technology, engineering, the arts, andmathematics topics. ARISS does this by organizing scheduled contacts viaamateur radio between crew members aboard the ISS and students. Before andduring these radio contacts, students, educators, parents, and communities takepart in hands-on learning activities tied to space, space technologies, andamateur radio. For more information, see http://www.ariss.org . MediaContact: DaveJordan, AA4KN ARISSPR Findus on social media at: Twitter:ARISS_Intl Facebook:facebook.com/ARISSIntl Instagram:ariss_intl Mastodon:[email protected] Checkout ARISS on Youtube.com.

1 0