Date   

Re: Light Duty Satellite Antenna Rotator

Steve [AA8AF]
 

I looked at this too and believe they are selling basically the mechanical parts:  mount, servos and limit switches.  

What is missing is the controller to drive the servos to track the satellite in response to inputs from your tracking software, reorient the mount to continue tracking beyond the limits, as well as to initially orient the mount (north-south, level, etc.). 

However, looks like he sells a solar tracking controller:

Steve
AA8AF

On Dec 1, 2022, at 12:04 PM, Max Becker <maxheadspace@...> wrote:

Does seem to have potential.  I imagine there's some kind of tracking/controlling option. I'd be interested.



Re: Light Duty Satellite Antenna Rotator

Max Becker
 

Does seem to have potential.  I imagine there's some kind of tracking/controlling option. I'd be interested.

Max

                               Brad Ko6kL
Nov 29   
 
Does anyone use a solar tracker mount to aim a sat antenna , its in the under $200 class... seems like it might be useable.
a rain coat coer and a few switches to control and good to go.
 


Re: Light Duty Satellite Antenna Rotator

Brad Ko6kL
 


locked Re: Long-distance Dialing #poll-notice

Loren Lang
 

For cellphones, I almost always bother to include the +1 for all numbers [in the US], not just long-distance. That's because the + prefix turns it into a global phone number that works everywhere. The phone network knows how to translate the +1 as needed for your local area. When I first went abroad, it took me a while to figure out how to call a German phone number while in Germany. I had saved it as a 011 49 ... and that doesn't work to call the German phone number when using that cellphone inside the country of Germany even though it's a US T-Mobile SIM card. You have to dial as if you were local to their phone network. I tried dropping the 011 and also the 49 country calling code to call Germany, but it still didn't work. It turns out, German local calls always start with a 0 so I really had to replace the 011-49 with just a 0. However, if I use +49 as the leading prefix, then it still works, in the US, in Germany, or even in India. Any phone number without that + sign is local to the phone network it is started from and will be different depending on your location, but a global phone number always works. It's like starting a file path with / (or C:\ for you Windows folks) and making it absolute instead of starting with the folder name like Documents and assuming it's local to your profile.

-Loren
K7IW


On Mon, Nov 28, 2022 at 2:46 PM w5mdp <mike.pinkston@...> wrote:
It works different for landlines and cell phones


Re: Light Duty Satellite Antenna Rotator

Brad Ko6kL
 


yes, we would like to read about your progress... and perhaps donate any listed items needed.
Ko6kL




Re: Light Duty Satellite Antenna Rotator

Max Becker
 

Adam, please share when you're completed!  73
Nov 24   
I'm currently designing an electronically scanned phased array SAT antenna.
Totally quiet & stationary; no XY motors needed. Small, lightweight.

Adam


Re: Light Duty Satellite Antenna Rotator

Adam
 

I'm currently designing an electronically scanned phased array SAT antenna.
Totally quiet & stationary; no XY motors needed. Small, lightweight.

Adam


Re: Has Hades Frozen Over?

Clint Bradford
 

$49 Amazon Prime tomorrow ...

TIDRADIO TD-H6 10Watt Ham Radio Handheld Upgraded from BaoFeng UV-5R Dual Band Walkie Talkies with Extra 2200mAh Battery, Programming Cable, Speaker Mic and TD-771 Antenna https://a.co/d/9IPyJ1J


Re: Light Duty Satellite Antenna Rotator

Max Becker
 

They told me they have 200 parts kits, but apparently are waiting on a key component. 


Re: Light Duty Satellite Antenna Rotator

KC9REN
 

On Wed, Nov 23, 2022 at 03:02 PM, Max Becker wrote:
Having fun with the SARCTRAC Mk3 satellite antenna rotator.  Cheap and portable..

https://youtu.be/DmyvzZV4OXs
Thanks. I've been thinking of getting an inexpensive antenna rotator for satellites. Sadly due to Covid they are out of stock presently but if you keep checking back, they are still making them. https://www.sarcnet.org/products.html
Dean - KC9REN


Light Duty Satellite Antenna Rotator

Max Becker
 

Having fun with the SARCTRAC Mk3 satellite antenna rotator.  Cheap and portable..

https://youtu.be/DmyvzZV4OXs


Unique ARISS Project

Clint Bradford
 

This one promises to be unique, ARISS contact #1494 Tuesday will cover students across 10  Caribbean and Central America countries organized from Saint Lucia. 
 
Check the image for times and watch LIVE online at ariotti.com


Re: Dual Band Tape Measure Yagi

Mike Hoblinski
 

Since the aluminum extrusion has slots on all for sides I suppose you could
rotate the 440 ellements 90 degrees. Keeping the same spacing for all elements you might
have to reposition the 144 or 440 sets to avoid them running touching each other.

Mike
N6IMF


Re: Dual Band Tape Measure Yagi

Max Becker
 

Yes, I agree.  There are tradeoffs.  There are a number of commercially available dual-banders that use a similar configuration with two independent yagis in the same plane, so it likely isn't a totally onerous design. 

From:  M0PWX
Nov 17  

The downside of them both in the same plane is that there is more interaction between the 2m and 70cm elements than if they were 90deg out of line

 

Peter

M0PWX


Re: Dual Band Tape Measure Yagi

M0PWX
 

The downside of them both in the same plane is that there is more interaction between the 2m and 70cm elements than if they were 90deg out of line

 

Peter

M0PWX

 

M0PWX Grabber Page (qsl.net)

 

From: Max Becker

 

I like this.  One of the things i like about the Elk sat antenna, versus the Arrow, is that it is flat and is easier to transport assembled.  Having both 2 meter and 70 cm in the same plane makes this antenna equally mobile.  

 


Re: Dual Band Tape Measure Yagi

Max Becker
 

I like this.  One of the things i like about the Elk sat antenna, versus the Arrow, is that it is flat and is easier to transport assembled.  Having both 2 meter and 70 cm in the same plane makes this antenna equally mobile.  


Re: Dual Band Tape Measure Yagi

Mike Hoblinski
 

I remember the simple and cheap Yagi built before the tape measure antenna came along.
The long square wooden boom with rods. I think the Yagi in the video has a lot of potential
for experimenters.  Using the aluminum extrusion you can experiment with element spacing by
just sliding the elements. The tape measure elements seem to be easily removed so if you make
a mistake cutting and turning them they are easily replaced. The 3D printed brackets could be
reworked to accept an arrow shaft. Or you could lighten the weight of the antenna by drilling holes
in the aluminum extrusion boom. 

I also wonder if the same design could be reworked into an Elk style antenna. One of the fun things
about ham radio is experimentation. And with these tape measure style antennas you're not out too much
money if it doesn't work out. I was in a local thrift store and they had a whole box of old tape measures for
2 to 3 dollars each.

Mike
N6IMF 



On Wed, Nov 16, 2022 at 7:28 PM Clint Bradford via groups.io <clintbradford=mac.com@groups.io> wrote:
Also check out the dual-bander on the ANTENNAS page at work-sat.com ...


On Nov 16, 2022, at 8:28 AM, Mike Hoblinski <hobergenix@...> wrote:

I have seen Tape Measure antennas but not sure if their was a dual band version.
I ran across this one. This design dose use some 3D printed parts and Aluminum
extrusion for the boom. 

https://www.instructables.com/Diy-Tape-Measure-Yagi-Antenna-for-Ham-Radio/?utm_source=newsletter&utm_medium=email

Mike
N6IMF


Re: Dual Band Tape Measure Yagi

Clint Bradford
 

Also check out the dual-bander on the ANTENNAS page at work-sat.com ...


On Nov 16, 2022, at 8:28 AM, Mike Hoblinski <hobergenix@...> wrote:

I have seen Tape Measure antennas but not sure if their was a dual band version.
I ran across this one. This design dose use some 3D printed parts and Aluminum
extrusion for the boom. 

https://www.instructables.com/Diy-Tape-Measure-Yagi-Antenna-for-Ham-Radio/?utm_source=newsletter&utm_medium=email

Mike
N6IMF


Dual Band Tape Measure Yagi

Mike Hoblinski
 

I have seen Tape Measure antennas but not sure if their was a dual band version.
I ran across this one. This design dose use some 3D printed parts and Aluminum
extrusion for the boom. 

https://www.instructables.com/Diy-Tape-Measure-Yagi-Antenna-for-Ham-Radio/?utm_source=newsletter&utm_medium=email

Mike
N6IMF


Spain's GENESIS-G and GENESIS-J satellites in orbit

Clint Bradford
 

Translation from AMSAT-EA's site:

The GENESIS-G and GENESIS-J satellites of AMSAT-EA (Vocal Office of satellites of the URE) are already in orbit after the successful launch of the Firefly Alpha vector, which has left spectacular images, including views of the Picobus ejector moments before satellite deployment. 
It is noteworthy that in just a second attempt after last year's failure, Firefly has managed to reach orbit and deploy satellites, quite a feat that normally requires 3 or 4 launches when it comes to new rockets. The launch took place from the Vanderberg Air Base in California (USA) at 7:00 UTC to an orbit of 300 km and an inclination of 137 degrees.

The satellites are also named ASTROLAND-1 and ASTROLAND-2 and are due to the sponsorship of the project by the Astroland Planetary Agency.

As on the previous occasion, two experimental propellants are flown, although this time they are from the Madrid company IENAI Space and, unlike the previous GENESIS mission, they use a liquid ionic fuel. Only the one from GENESIS-J/ASTROLAND-2 is functional. The one from GENESIS-G/ASTROLAND-1 carries the electronics but without the fuel.

The frequencies and modes of work coordinated with IARU are as follows:

GENESIS-G/ASTROLAND-1

  • 145.875 MHz uplink, Modes: FM voice (no subtone) and FSK 50 bps, AFSK, AX.25, APRS 1200 / 2400 bps
  • 436.888 MHz downlink, Modes: FM voice, CW, FSK 50 bps, FM voice beacon with AM2SAT callsign

GENESIS-J/ASTROLAND-2

  • 145.925 MHz uplink, Modes: FM voice (no subtone) and FSK 50 bps, AFSK, AX.25, APRS 1200 / 2400 bps
  • 436.666 MHz downlink, Modes: FM voice, CW FSK 50 bps, SSTV Robot 36, FM voice beacon with AM3SAT callsign
TENTATIVE TLE -


GENESIS-L 1 99999U 21200E 21246.13531250 .0011565 00000-0 00000-0 0 9990 2 99999 137.094 42.0460 0000473 210.6500 291.0540 15.90200000 16

GENESIS-N 1 99999U 21200E 21246.13531250 .0011565 00000-0 00000-0 0 9990 2 99999 137.094 42.0460 0000473 210.6500 291.0540 15.90200000 16

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