Date   

Re: Two New Experiments

Clint Bradford
 
Edited

Those TLE are probably inaccurate - watch AMSAT for updates soon.


Re: Two New Experiments

Clint Bradford
 

Tentative TLE ... Pass coming over North America 1655 UTC ...

Prelaunch TLEs:

Deployment number 28

TEVEL-4/TEVEL-5
1 12345U 22-T3TE  22013.69008102 0.00000000  00000-0  00000-0 0  9997
2 12345  97.3652  83.6317 0010843 246.0911 147.6817 15.12493461    06

Deployment number 30

TEVEL-1/TEVEL-2/TEVEL-3
1 12345U 22-T3TE  22013.69038194 0.00000000  00000-0  00000-0 0  9991
2 12345  97.3658  83.6317 0009074 254.1211 141.2940 15.11975594    07

Deployment number 55

TEVEL-6/TEVEL-7/TEVEL-8
1 12345U 22-T3TE  22013.69375000 0.00000000  00000-0  00000-0 0  9991
2 12345  97.3676  83.6318 0009046 252.0606 161.7026 15.11914367    05

 


Re: Two New Experiments

Clint Bradford
 

SB SPACE @ ARL $ARLS001
ARLS001 EASAT-2 and Hades Satellites with FM Repeaters Scheduled for
Launch

ZCZC AS01  
QST de W1AW  
Space Bulletin 001  ARLS001
From ARRL Headquarters  
Newington, CT  January 12, 2022
To all radio amateurs

SB SPACE ARL ARLS001
ARLS001 EASAT-2 and Hades Satellites with FM Repeaters Scheduled for
Launch

The EASAT-2 and Hades satellites are scheduled to launch on January
13 on a SpaceX TR-3 flight, AMSAT has reported, citing information
provided by AMSAT-EA President and Mission Manager Felix Paez. Both
will carry amateur radio payloads offering FM voice and data
retransmission in FSK or AFSK up to 2,400 bps, and Hades is equipped
for slow-scan television (SSTV) and FM voice beacons with call signs
AM5SAT (EASAT-2) and AM6SAT (Hades).

Paez has called on the amateur radio community to listen for both
satellites when they are activated. In the case of EASAT-2, that
will be about 30 minutes after launch (1525 UTC). Hades will be
activated remotely a few days after launch. Share reception reports
with AMSAT-EA at, http://data.amsat-ea.org/ .

EASAT-2 was designed and built by AMSAT-EA and students from the
European University of Degrees in Aerospace Engineering in Aircraft
and in Telecommunication Systems Engineering. It carries an
experimental load of a basalt material from Lanzarote that is
similar to lunar basalts. It's believed that this material, which
was provided by the CSIC research group on meteorites and planetary
geosciences at the Institute of Geosciences, could be used as a
lunar construction material.

During various investigations, the UNESCO world geopark of Lanzarote
and the Chinijo archipelago have served as an as an analog of the
moon and Mars, as well as for training European Space Agency
astronauts, Paez said. The purpose of the basalt experiment is to
determine its evolution in space based on periodic measurements of
some of its properties. "Although the experiment is limited and
constitutes the first phase of this type of study, it represents an
important milestone as it is the first of its kind to be introduced
on such a small satellite," Paez explained.

The Hades payload consists of a miniature camera, the output of
which will be transmitted as an audio signal in SSTV mode. The
transmissions will be compatible with Robot36, Robot72, MP73, and
MP115. The camera module design was based on one used successfully
in the PSAT-2 satellite, which was built by cadets at the US Naval
Academy and by students at the Brno University of Technology and has
been in use since 2019. The system will be controlled completely
from the ground. The SSTV firmware will permit sending live images
as well as images saved in flash memory or encoded in onboard
read-only memory (ROM). It also provides PSK telemetry and imaging
advance scheduling with current status (event counters, temperature,
voltage, light conditions, etc.) and a brief summary, Paez said.

* EASAT-2 Frequencies

145.875 MHz uplink, FM voice (no subtone) and FSK 50 bps, AFSK,
AX.25, APRS 1,200/2,400 bps

436.666 MHz downlink, FM voice, CW, FSK 50 bps, FM voice beacon with
call sign AM5SAT.

* HADES Frequencies

145.925 MHz uplink, FM voice (no subtone) and FSK 50 bps, AFSK,
AX.25, APRS 1,200/2,400 bps

436.888 MHz downlink, FM voice, CW FSK 50 bps, SSTV Robot 36, FM
voice beacon with call sign AM6SAT

More information in English and Spanish on transmissions from both
satellites is available from the AMSAT-EA website at,
https://www.amsat-ea.org/ .
NNNN
/EX


Two New Experiments

Clint Bradford
 

Two new satellites scheduled to launch later this month. 

EASAT-2
 
  • 145.875 MHz uplink, Modes: VOICE FM (without undertone) and FSK 50 bps, AFSK, AX.25, APRS 1200 / 2400 bps
  • 436.666 MHz downlink, Modes: FM voice, CW, FSK 50 bps, FM voice beacon with AM5SAT callsign

HADES

  • 145.925 MHz uplink, Modes: VOICE FM (without undertone) and FSK 50 bps, AFSK, AX.25, APRS 1200 / 2400 bps
  • 436.888 MHz downlink, Modes: FM voice, CW FSK 50 bps, SSTV Robot 36, FM voice beacon with AM6SAT callsign
Watch amsat-uk.org for details. And here's a 14-page .pdf description of the projects -

https://www.amsat-ea.org/app/download/12530621/AMSAT+EA+-+EASAT-2+and+HADES+Transmissions+description+v1.05.pdf

 


Re: Virtual ISS Meeting

Ells, David/WAL
 

Thanks for the info Clint!

-----------------------------------------

From: "Clint Bradford via groups.io"
To: Work-Sat@groups.io
Cc:
Sent: Thursday January 6 2022 12:36:00PM
Subject: [Work-Sat] Virtual ISS Meeting

Have you always wanted to know more about the research taking place onboard the International Space Station (ISS)? If so, NASA and the ISS National Laboratory have an exciting event for you! Join us Wednesday, February 2, 2022, from 2 p.m. to 3:30 p.m. EST for a virtual Destination Station event. You’ll learn how the ISS enables research to advance scientific knowledge and demonstrate new technologies to benefit all of humanity.

The event will feature NASA astronaut Victor Glover, who will discuss what it’s like to live and work in space. Also, representatives from NASA and the ISS National Lab will provide an overview of capabilities on station as well as current opportunities to become part of the space station research community.

https://go.issnationallab.org/shared/webmail/51802/1105340174/4f076e58cbb96e5307524f9239f76ed377925bcad941c5ad0c85d9b75eb29730


Virtual ISS Meeting

Clint Bradford
 

Have you always wanted to know more about the research taking place onboard the International Space Station (ISS)? If so, NASA and the ISS National Laboratory have an exciting event for you! Join us Wednesday, February 2, 2022, from 2 p.m. to 3:30 p.m. EST for a virtual Destination Station event. You’ll learn how the ISS enables research to advance scientific knowledge and demonstrate new technologies to benefit all of humanity.

The event will feature NASA astronaut Victor Glover, who will discuss what it’s like to live and work in space. Also, representatives from NASA and the ISS National Lab will provide an overview of capabilities on station as well as current opportunities to become part of the space station research community.

https://go.issnationallab.org/shared/webmail/51802/1105340174/4f076e58cbb96e5307524f9239f76ed377925bcad941c5ad0c85d9b75eb29730


Re: ISS 2022 Wall Calendar

Clint Bradford
 

Sorry for that last post - NO, The JPL Store doesn't have a 2022 Wall Calendar, yet, 
according to Jen at the shop.


Re: Powerpoles- NOT for Permanent Installations

Clint Bradford
 

I use Caig's DeoxIT D5S-6 on my microphones' XLR cables and preamp's connections ... they are a great firm.

https://caig.com/

Clint


Re: Powerpoles- NOT for Permanent Installations

Robert Hanson
 

I use  DeoxIT®, #D100L on PowerPoles and most connections.
It is a staple in the recording industry and anywhere connections are critical.
You can find it in various sizes on amazon, or direct from Caig.

For PowerPoles the 100% liquid is best. You don't need the spray.
If there is corrosion the cleaner might help, but I would replace the connector.

73
W6RH


Re: ISS 2022 Wall Calendar

Rob
 

I was referring to a printed hardcopy (aka "real") calendar, not the PDF :D :D


Re: Powerpoles- NOT for Permanent Installations

AF7ZA
 

Clint. After a quick search and without a reference to cite, I found this discussion from Engineering 360.

Lithium grease will work for any point which is not in the electrical circuit path. If you are lubricating the sliding contacts themselves, or any other part of a current path, do not use lithium grease. It is not a conductive medium and will create a high resistance connection. The contacts will overheat and fail. Dielectric grease, which is formulated to be an electrical insulator, will produce similar results.

For locations such as hinges and contacts of air break switches, the bus bar contacts of motor control center starters, or air circuit breaker contacts, use a conductive grease. One such grease is this product from mg Chemicals. It has a carbon content of 21% (lithium grease is <1%) to maintain electric conductivity while reducing metal-to-metal friction. When applying, ensure the grease does not leave a film between contacts, which will create an electrical path through the film.

There are many conductive types of grease out there. However, I’ve used what ever I had at the time for various connectors especially bearing grease covering my round post truck battery terminals. But I’ve never put anything on my Andersons mobile or stationary. I have used dielectric grease on trailer light connections mostly to keep moisture and oxidation at bay. In the old days folks would use a mixture of oil & boiled Linseed oil and coat everything.

On Jan 4, 2022, at 1:11 43PM, Clint Bradford via groups.io <clintbradford@...> wrote:

While discussing Anderson Powerpoles last week on another
message board, a couple folks were angered with my post ...


A note on Powerpoles ... if not "used" (connecting/disconnecting) often, they

can develop resistance in that two-spring contact. Enough to slow or even stop

100-200mW loads.

 

Look at a cross-section of the contacts - and see how very little metal-to-metal

contact there actually is.

 

So - using for non-permanent installations, like taking equipment to events or 

for demos - is great. But if not "working" by disconnecting-connecting, the 

contacts can corrode and create a little resistance.

 

Tiny Jones' screw plug connectors are a great choice for shack installations.


This is a phenomenon I have read about and realized for several years. And in  

2006, I contacted Anderson Power for their input - which affirmed what the 

proper intent and design of their Powerpoles actually is, and that their beauty 

is the “self-cleaning, wiping” action.

 

So here we are in 2022, and I re-contacted Anderson …


Good day, XXXXX. And Happy New Year to Anderson!

 

Would it be a fair statement to write that the PowerPoles we are using for 

12VDC amateur radio applications “want” to be occasionally disconnected 

and connected - to “wipe” clean any tiny amount of corrosion that may 

occur?

 

I always thought that they are, indeed, the ULTIMATE “universal” connector 

for hams … one of a very few items that ALL can agree upon for power 

connection needs as we move that equipment from site to site. But that they 

were not intended for “permanent” equipment installations: I should not 

install them on cabling that I won’t access for months/years.

 

“Built-in” to your design is the “cleaning by wiping” …

 

MANY THANKS for your support of the amateur radio community.

 

Clint Bradford K6LCS


And Anderson replied -


Hi Clint,

 

You are on the right track.

 

According  to our preventative maintenance page 15 of the catalog below 

there is a self-cleaning action as the connectors engage and disengage.

<Screen Shot 2022-01-04 at 12.15.54 PM.png>

 

Anderson Powerpole Tech Manual

 

When mating and un-mating a self cleaning action is provided.

 

It helps prevent dirt from accumulating.

 

You may also purchase white lithium grease from a hardware store as well to clean.

 

It does not take away corrosion and if there is  a lot of corrosion they should be replaced,

 

Please read the PM section on page 15 and let us know if you have further questions.


SO … Nothing monumental. The majority of hams are, probably, moving equipment and 

“cleaning” their Powerpoles by merely disconnecting and connecting. 

 

But my original assertion - that they should not be used for “permanent” installations - 

is, indeed a valid one. I never wrote that there would be a dramatic loss of power, and 

your equipment would fail - it is just a statement accurately reflecting how Anderson 

engineered their product.

And don't "add" problems to the equation by purchasing non-Anderson Powerpoles. HRO - 
Ham Radio Outlet - offers genuine Anderson products, as does Powerwerx.

Clint Bradford

DISCLAIMER: Clint has absolutely no financial interest in Anderson, Tiny Jones, 
HRO, nor Powerwerx.



Powerpoles- NOT for Permanent Installations

Clint Bradford
 

While discussing Anderson Powerpoles last week on another
message board, a couple folks were angered with my post ...


A note on Powerpoles ... if not "used" (connecting/disconnecting) often, they

can develop resistance in that two-spring contact. Enough to slow or even stop

100-200mW loads.

 

Look at a cross-section of the contacts - and see how very little metal-to-metal

contact there actually is.

 

So - using for non-permanent installations, like taking equipment to events or 

for demos - is great. But if not "working" by disconnecting-connecting, the 

contacts can corrode and create a little resistance.

 

Tiny Jones' screw plug connectors are a great choice for shack installations.


This is a phenomenon I have read about and realized for several years. And in  

2006, I contacted Anderson Power for their input - which affirmed what the 

proper intent and design of their Powerpoles actually is, and that their beauty 

is the “self-cleaning, wiping” action.

 

So here we are in 2022, and I re-contacted Anderson …


Good day, XXXXX. And Happy New Year to Anderson!

 

Would it be a fair statement to write that the PowerPoles we are using for 

12VDC amateur radio applications “want” to be occasionally disconnected 

and connected - to “wipe” clean any tiny amount of corrosion that may 

occur?

 

I always thought that they are, indeed, the ULTIMATE “universal” connector 

for hams … one of a very few items that ALL can agree upon for power 

connection needs as we move that equipment from site to site. But that they 

were not intended for “permanent” equipment installations: I should not 

install them on cabling that I won’t access for months/years.

 

“Built-in” to your design is the “cleaning by wiping” …

 

MANY THANKS for your support of the amateur radio community.

 

Clint Bradford K6LCS


And Anderson replied -


Hi Clint,

 

You are on the right track.

 

According  to our preventative maintenance page 15 of the catalog below 

there is a self-cleaning action as the connectors engage and disengage.


 

Anderson Powerpole Tech Manual

 

When mating and un-mating a self cleaning action is provided.

 

It helps prevent dirt from accumulating.

 

You may also purchase white lithium grease from a hardware store as well to clean.

 

It does not take away corrosion and if there is  a lot of corrosion they should be replaced,

 

Please read the PM section on page 15 and let us know if you have further questions.


SO … Nothing monumental. The majority of hams are, probably, moving equipment and 

“cleaning” their Powerpoles by merely disconnecting and connecting. 

 

But my original assertion - that they should not be used for “permanent” installations - 

is, indeed a valid one. I never wrote that there would be a dramatic loss of power, and 

your equipment would fail - it is just a statement accurately reflecting how Anderson 

engineered their product.

And don't "add" problems to the equation by purchasing non-Anderson Powerpoles. HRO - 
Ham Radio Outlet - offers genuine Anderson products, as does Powerwerx.

Clint Bradford

DISCLAIMER: Clint has absolutely no financial interest in Anderson, Tiny Jones, 
HRO, nor Powerwerx.


Re: ISS 2022 Wall Calendar

Andy
 

On Tue, Jan 4, 2022 at 09:39 AM, Robert Switzer wrote:
as far as I can tell, the pdf version Clint posted is not available anywhere.

It is still available and still in the same place.  https://go.nasa.gov/3qzqNFJ  I downloaded it again just now.  All 13 MB of it.

But for some reason, some web browsers might not find it?  I don't know why that happens.  Time-outs?  Too large?  Firewall?

Here is the expanded URL (as of today): https://www.nasa.gov/sites/default/files/atoms/files/2022_iss_calendar.pdf

Andy


Re: ISS 2022 Wall Calendar

Rob
 

as far as I can tell, the pdf version Clint posted is not available anywhere.

there are, as pointed out, several NASA space calendars available in different places, for varying prices.

However, I've not seen a hardcopy version available for the original pdf version posted.

Might be out there somewhere, or my eyes might be worse than I already think they are :)

Rob KA2CZU


Re: ISS 2022 Wall Calendar

AF7ZA
 

Thanks Andy.
Bill

On Jan 3, 2022, at 9:28 45AM, Andy <ai.egrps@...> wrote:

... "where you might expect they are sold out."

Apparently not sold out at the NASA Kennedy Space Center store, and costs less too:

https://thespaceshop.com/2022-nasa-calendar/


Re: ISS 2022 Wall Calendar

Andy
 

... "where you might expect they are sold out."

Apparently not sold out at the NASA Kennedy Space Center store, and costs less too:

https://thespaceshop.com/2022-nasa-calendar/


Re: ISS 2022 Wall Calendar

Andy
 

Bill, this is my result when I searched the JPL store for "Calendar":

https://thejplstore.com/search?type=product%2Carticle%2Cpage&options%5Bprefix%5D=last&q=calendar

Alas, it's NASA but not ISS.

There appear to be multiple NASA stores, for multiple NASA locations.  Searching for "calendar" returns several PAGEFULS of stuff, but they might not be the ones you're looking for.  They do have the same NASA calendar that the JPL store has, but it's "sold out" at this NASA store.

Maybe you misspelled "Calendar"?  Or tried a different NASA store?

In any event, Amazon looks like an easier way to find it.

Andy


Re: ISS 2022 Wall Calendar

AF7ZA
 

Thanks, but I’d rather not. I did however search for NASA Store Calendar and it took me to their store, where you might expect they are sold out.



On Jan 3, 2022, at 8:54 37AM, Clint Bradford via groups.io <clintbradford@...> wrote:

Search for ...

nasa space calendar 2022

... on Amazon.


Re: ISS 2022 Wall Calendar

Clint Bradford
 

Search for ...

nasa space calendar 2022

... on Amazon.


Re: ISS 2022 Wall Calendar

AF7ZA
 

Clint
I thought I’d take a look at both the JPL & NASA store for a Calendar. Couldn’t find anything at JPL mentioning Calendar, nor at the NASA Store. But my eyes ain’t what they used to be.

Do you have a link ?
Bill

On Jan 2, 2022, at 9:10 29AM, Clint Bradford via groups.io <clintbradford@...> wrote:

I have seen beautiful ones at the JPL store and at the NASA online store ...

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