Date   
Re: Amateur Radio Satellite Gadgets

Joe Palmer <w8jxm@...>
 

Randy:
 
Thank you for your fine site and good efforts.
 
Best 73.
 
Joe
W8JXM


--- On Tue, 8/10/10, kd0hkd_randy wrote:

From: kd0hkd_randy
Subject: [Work-Sat] Amateur Radio Satellite Gadgets
To: Work-Sat@...
Date: Tuesday, August 10, 2010, 3:12 PM

 
Fellow Satellite Enthusiasts!
Many of you have been to my web site, and have seen the section I've made focusing on Amateur Satellite Radio.  Thanks for the Support!  One of my web pages on the site looks at "Amateur Radio Satellite Gadgets." (http://www.purplesa ge.biz/kd0hkd/ satellite/ gadget.htm
What I'm trying to do here is give a brief review or description of given items from the perspective of Pros and Cons.  When you go to the page, I think you'll get the picture.  So far, I've displayed Antennas, Rotators, and HT and Base Radios.
As much as I would like to, (as with many of us,) I don't have the resources or funds to try out every item or product that's out there in the world, but as a group of enthusiasts, I suspect we have a pretty broad base of hams who have tried all sorts of gadgets and products!  What I'm asking from you, is if you can e-mail me your views and opinions in the form of two or three bullet points of Pros and Cons about the gadget.  You might include, for instance:
- Make Model
- Pros
o Point 1
o Point 2
o Point 3
- Cons
o Point 1
o Point 2
o Point 3
- Site Address of where you obtained the gadget.
- A brief two or three sentence comment about the gadget.
If published on my web site, I would give you the by line for submitting the information.
As with anything else on my web site, I must reserve the right to choose what I publish on the web site, and reserve the right to edit the content.
So what gadget or item works for you?  Let's give this a shot, and hope it's not too much for me to handle.  If you have an item I can post, send your gadget information to kd0hkd@everestkc. net
Have Fun!
Randy
KD0HKD
 
 

Amateur Radio Satellite Gadgets

Randy Schulze
 

Fellow Satellite Enthusiasts!

Many of you have been to my web site, and have seen the section I've made focusing on Amateur Satellite Radio.  Thanks for the Support!  One of my web pages on the site looks at "Amateur Radio Satellite Gadgets." (http://www.purplesage.biz/kd0hkd/satellite/gadget.htm

What I'm trying to do here is give a brief review or description of given items from the perspective of Pros and Cons.  When you go to the page, I think you'll get the picture.  So far, I've displayed Antennas, Rotators, and HT and Base Radios.

As much as I would like to, (as with many of us,) I don't have the resources or funds to try out every item or product that's out there in the world, but as a group of enthusiasts, I suspect we have a pretty broad base of hams who have tried all sorts of gadgets and products!  What I'm asking from you, is if you can e-mail me your views and opinions in the form of two or three bullet points of Pros and Cons about the gadget.  You might include, for instance:

- Make Model

- Pros
o Point 1
o Point 2
o Point 3

- Cons
o Point 1
o Point 2
o Point 3

- Site Address of where you obtained the gadget.

- A brief two or three sentence comment about the gadget.

If published on my web site, I would give you the by line for submitting the information.

As with anything else on my web site, I must reserve the right to choose what I publish on the web site, and reserve the right to edit the content.

So what gadget or item works for you?  Let's give this a shot, and hope it's not too much for me to handle.  If you have an item I can post, send your gadget information to kd0hkd@...

Have Fun!

Randy
KD0HKD

 

 

Re: Recording of 10:15 UTC pass of AO-51 on August 7

K6LCS <clintbrad4d@...>
 

Just forwarded your request to the AMSAT messageboard.

Clint

Hello all! Would anyone have a recording of the 10:15 UTC pass of AO-51 on August 7?

Recording of 10:15 UTC pass of AO-51 on August 7

pfarcon
 

Hello all! Would anyone have a recording of the 10:15 UTC pass of AO-51 on August 7? I rushed out to work the pass and started about halfway through the 70 degree pass at peak. I made about 4 quick contacts in succession but then at LOS I reached down to turn off the recorder and realized in my haste I had never pushed record! I do remember K8YSE in EN77 but the others including a new grid for me, FN10, I am trying to recall. Any help would be greatly appreciated for this absent minded satellite enthusiast! LOL!

73,

Pat

N2VYT FN20un

Re: Orange County Fair Ham Booth

K6LCS <clintbrad4d@...>
 

Heard you on AO51 about 00:28 here in CM99; called several times ...
We were outside of the exhibition hall, but right next to a ferris wheel and other really noisy amusement park rides. There was plenty we did NOT hear ...

I'm using TH-F6 and Arrow 146/437-10WPD ...
Great stuff!

When is your next demo?
We can try to work it in the next couple of days if you'd like ... Let check our schedules, and I'll post later.

Clint

Re: Orange County Fair Ham Booth

Clint Bradford <clintbrad4d@...>
 

It was so darned noisy here at the Fair ... Sorry I missed you. I will write to you later tonight.

Sent from my iPod touch.

On Aug 5, 2010, at 19:24, n6isy@... wrote:

Clint,
Heard you on AO51 about 00:28 here in CM99; called several times. I'm using TH-F6 and Arrow 146/437-10WPD. This was my first attempt at satellite comm's.
When is your next demo?
Dick Bruno N6ISY
Vacationing in Clio CA

Sent from my Verizon Wireless BlackBerry


From: "K6LCS" <clintbrad4d@...>
Sender: Work-Sat@...
Date: Tue, 03 Aug 2010 14:22:52 -0000
ReplyTo: Work-Sat@...
Subject: [Work-Sat] Orange County Fair Ham Booth

 

LIVE! - From the Orange County Fairgrounds and the award-winning amateur radio booth, Gordon West and I are presenting an AMSAT demo on Thursday, August 5, 2010 at 5:24PM PDT.

The Fair's Web site is at ... http://www.ocfair.com/2010/

Please send me email for further information. I do not have any parking passes left, sorry!

Clint Bradford, K6LCS
clint@...
909-241-7666 - cell

Re: Orange County Fair Ham Booth

Richard Bruno
 

Clint,
Heard you on AO51 about 00:28 here in CM99; called several times. I'm using TH-F6 and Arrow 146/437-10WPD. This was my first attempt at satellite comm's.
When is your next demo?
Dick Bruno N6ISY
Vacationing in Clio CA

Sent from my Verizon Wireless BlackBerry


From: "K6LCS" <clintbrad4d@...>
Sender: Work-Sat@...
Date: Tue, 03 Aug 2010 14:22:52 -0000
To: <Work-Sat@...>
ReplyTo: Work-Sat@...
Subject: [Work-Sat] Orange County Fair Ham Booth

 

LIVE! - From the Orange County Fairgrounds and the award-winning amateur radio booth, Gordon West and I are presenting an AMSAT demo on Thursday, August 5, 2010 at 5:24PM PDT.

The Fair's Web site is at ... http://www.ocfair.com/2010/

Please send me email for further information. I do not have any parking passes left, sorry!

Clint Bradford, K6LCS
clint@...
909-241-7666 - cell

Re: NA1SS contact

K6LCS <clintbrad4d@...>
 

GREAT work, Jason!

CLint, K6LCS

Re: NA1SS contact

Jason Snyder
 

In a follow up from the past several past weeks, I have since contacted the ISS and Col. Wheelock two more times for a total of 3 times now. The second contact was made by using an Yaesu FT-5100, and a J-pole up in the attic of the house. An the third contact was again using the VX-8r, and arrow antenna. I tried to pass along the information about the cooling systems and wished them luck in getting it fixed, twelve hours after it happened and the Col. could not believe it was already public info...Just goes to show how 'fast' news travels about space. 73's Jason, WV3V

--- In Work-Sat@..., "Jason Snyder" <jayray27_00@...> wrote:

This Wednesday (7July2010) I made an amazing contact on 145.800Mhz. I made contact with the International Space Station, Col. Doug Wheelock, NA1SS, on the ISS. The predicted pass was going over Las Vegas and I started calling CQ when the station was between 10-12 degrees over the horizon. To my amazement, he called back and we had a good conversation over the next several minutes. The Space Station was on an ascending node over LA and they were taking pictures of LA, approaching Las Vegas. I was using the Yaesu VX-8R, and Arrow dual band antenna from my QTH in the back yard. This was my second attempt to contact the ISS, the first being only a day prior. Amazing what an HT and handheld antenna can do.

73's Jason
WV3V / DM26

Here is the link to the youtube audio of the contact:
http://www.youtube.com/watch?v=TDCSJ5utSu4

Orange County Fair Ham Booth

K6LCS <clintbrad4d@...>
 

LIVE! - From the Orange County Fairgrounds and the award-winning amateur radio booth, Gordon West and I are presenting an AMSAT demo on Thursday, August 5, 2010 at 5:24PM PDT.

The Fair's Web site is at ... http://www.ocfair.com/2010/

Please send me email for further information. I do not have any parking passes left, sorry!

Clint Bradford, K6LCS
clint@...
909-241-7666 - cell

AO-51 Back On!

K6LCS <clintbrad4d@...>
 

We are completely reloaded and operational, in about 24 hours.

145.92/435.3 repeater is running with 67 Hz tone required to activate,
and will stay on for 2 minutes at a time. Output is 740 mw and subject
to change. We may have to adjust some other settings over the next day
or two. Please use the webpage at http://oscar.dcarr.org/ to post
reports. For some reason very few US stations use this. Please do as it
is impossible for us to listen to every pass.

73, Drew KO4MA
AMSAT-NA VP Ops

AO-51 Software Crash

K6LCS <clintbrad4d@...>
 

Software is being re-loaded into AO-51 ... it's been weird the past two days.

Clint

El Segundo Demo / Presentation August 17

K6LCS <clintbrad4d@...>
 

AMSAT area coordinator Clint Bradford, K6LCS, will be
presenting his 'Working Amateur Satellites With Your HT'
multimedia session at a special joint session of the El
Segundo, Hughes, and TRW amateur radio clubs on
August 17, 2010. All are welcome to attend - but your
RSVP is mandatory! Read on ...

"This is a special date and location that we've worked out
in order to accommodate these great clubs," Clint
writes. "And we have a tentative pass of satellite AO-51
at 5:45PM PDT that we'll be working from the parking lot."

We will be meeting at the El Segundo Police Station EOC,
348 Main Street, El Segundo CA 90245. Satellite pass is at
5:45PM PDT. The presentation and clubs' meeting starts
immediately after the pass!

The facility requires you to RSVP - please send your email to ...
Grace, KJ6CMA, at arit701542@... BEFORE
August 12, 2010.

Attendees should download Clint's four-page tutorial and
radio programming matrix before the meeting from ...

http://www.work-sat.com

And Clint welcomes pre-presentation questions - call him
at 909-241-7666, or send email to clint@... .
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

Re: Orange County Fair Demo August 5

Randy Schulze
 

Hey Clint!

Tell Gordon that I give him a "Tip of the Hat" in my Amateur Radio Satellite Presentations!  I credit the CD in his Technician Class Study Guide as one of the things that got me interested in radio satellites!

Randy
KD0HKD

On 07/28/10, K6LCS wrote:

 

LIVE from the Orange County Fairgrounds and the award-winning amateur radio booth, Gordon West and I are presenting an AMSAT demo on Thursday, August 5, 2010 at 5:45PM PDT.

The Fair's Web site is at ...

http://www.ocfair.com/2010/

Please send me email for further information. I do not have any parking passes left, sorry!

Clint Bradford, K6LCS
clint@...
909-241-7666 - cell


--
 
Randy Schulze
KD0HKD
Kansas City, Missouri
rschulze@...

Alinco DJ-G7 Revisited

K6LCS <clintbrad4d@...>
 

With the current firmware, it appears the only "sub-band rx sensitivity problems" are when the sub-band is set from 50-136mHZ.

More next week. Gordon West and I will be using one at the Aug 5 satellite demo at the Orange County Fair.

Clint

Orange County Fair Demo August 5

K6LCS <clintbrad4d@...>
 

LIVE from the Orange County Fairgrounds and the award-winning amateur radio booth, Gordon West and I are presenting an AMSAT demo on Thursday, August 5, 2010 at 5:45PM PDT.

The Fair's Web site is at ...

http://www.ocfair.com/2010/

Please send me email for further information. I do not have any parking passes left, sorry!

Clint Bradford, K6LCS
clint@...
909-241-7666 - cell

AO-51 Status

K6LCS <clintbrad4d@...>
 

From AMSAT-BB ...


...Do you think the bird will be able to support 2.4gig in the future?
I hope you don't mind if I copy this answer to the -bb as well. It's a
good question. The batteries on AO-51 have lost significant capacity
since launch six years ago, and in order to protect and lengthen their
life as long as possible, we are limiting the load during eclipse by
shutting off the UHF transmitter. We are also using the PL to only turn
on the UHF transmitter when in use. Both of these actions are controlled
by the flight software, specifically the PL and power management routines.

Since the S band transmitter on AO-51 is an added "experiment", the ways
in which it reacts with the IHU and flight software are different than
the UHF transmitters. The PL cannot be used to turn S on or off, only to
gate the audio. The power management software is unable to control the
state of the S band transmitter as well. The S transmitter is a fixed
output, that draws about 730 mA. This is an equivalent load to running
the 435.300 transmitter at over 1 watt. In other words, it is not an
insignificant load.

Since the return of eclipses this summer, after a long period of total
illumination, we have discovered that the S transmitter will pull the
battery voltage too low during eclipses. This activates a software
watchdog that shuts the S transmitter off until commanded back on from
the ground. As a work around, we have been using the automatic mode
scheduling software to re-enable the S transmitter a few minutes after
exiting eclipse each orbit. This has worked very well. The downside is
the scheduler only holds 18 events, as it was designed for the weekly
mode changes. At 1440 minutes per day, and 100 minutes per orbit, you
can see we need to upload a new schedule every day to keep S running
every orbit. As long as the satellite is in the sun, there is no problem
running the S downlink.

So, you can see why we have been frugal with S activity this summer, as
it is a real load on the command stations to plan the daily schedule,
encode it, and upload it to the satellite daily (at 5AM). The good news
is we return to a no eclipse period at the end of August, and I plan to
run S at a ~minimum~ of 1 week a month until eclipses return in 2011 for
many years. This works out OK over the summer, as there are lots of
folks on right now from their vacation spots, and out on the roads
giving out rare grids.

I hope this long-winded, probably-too-detailed explanation answers your
question.

73, Drew KO4MA

BTW, this AM Mark N8MH raised the 435.300 output to 1 watt.

Antelope Valley Demo / Presentation TOMORROW!

K6LCS <clintbrad4d@...>
 

AMSAT area coordinator Clint Bradford, K6LCS, will be presenting his 'Working Amateur Satellites With Your HT' multimedia session at the July 22, 2010 meeting of the Antelope Valley Amateur Radio Club. ALL are welcome to attend!

"The Antelope Valley club has been around for over 50 years," Clint writes. "I am looking forward to this session. We have a tentative pass of satellite AO-51 at 6:23PM that evening. If you can show up a little early, I'll be working the satellite from the parking lot."

The club meets at the Lancaster EOC building at City Hall, 45026 Fern Ave, Lancaster, CA 93534. Meeting starts at 7:30PM.

Attendees should download Clint's four-page tutorial and radio programming matrix before the meeting from ...

http://www.work-sat.com

And Clint welcomes pre-presentation questions - call him at 909-241-7666, or send email to clint@... .

Re: Upcomming Amateur Radio Satellite Presentation in Overland Park, Kansas

Randy Schulze
 

We will also be providing Frequency Programming Assistance to anyone who brings in a Yaesu FT-60R HT Radio.

Thanks!
Randy - KD0HKD

On 07/21/10, kd0hkd_randy wrote:

 

Randy Schulze KD0HKD, Eddy Paul KD0HZW, and Jeremy Widner K0PDX will be giving their presentation on Amateur Radio Satellites to the Amateur Radio Club of Johnson County at 7:00 PM, Friday, July 23rd. The meeting is held at the Overland Park Christian Church located at 75th and Conser in Overland Park, Kansas, diagonally across the street from the fire station.

A demonstration of an actual contact of the AO-51 Satellite will occur shortly after 6:00 PM-CDT, so anyone interested in watching a satellite contact, or perhaps participating in making contact with an amateur radio satellite should come to the parking lot of the church no latter than 5:45 PM.

73 and Thanks!

Randy Schulze, KD0HKD
Kansas City, Missouri
kd0hkd@...
http://kd0hkd.com


--
 
Randy Schulze
KD0HKD
Kansas City, Missouri
rschulze@...

Upcomming Amateur Radio Satellite Presentation in Overland Park, Kansas

kd0hkd_randy <kd0hkd@...>
 

Randy Schulze KD0HKD, Eddy Paul KD0HZW, and Jeremy Widner K0PDX will be giving their presentation on Amateur Radio Satellites to the Amateur Radio Club of Johnson County at 7:00 PM, Friday, July 23rd. The meeting is held at the Overland Park Christian Church located at 75th and Conser in Overland Park, Kansas, diagonally across the street from the fire station.

A demonstration of an actual contact of the AO-51 Satellite will occur shortly after 6:00 PM-CDT, so anyone interested in watching a satellite contact, or perhaps participating in making contact with an amateur radio satellite should come to the parking lot of the church no latter than 5:45 PM.

73 and Thanks!


Randy Schulze, KD0HKD
Kansas City, Missouri
kd0hkd@...
http://kd0hkd.com