Date   

Preamp

fejohnso
 

I am in the process of building the 70cm antennia which was in one of the QST magazines. It will probably be connected to my VX7R handheld as thats the only radio I have in that freq. Do I need to use some kind of preamp, if so, where do I find one?


Re: AO-51 Question-o-matic

K6LCS <clintbrad4d@...>
 

The PL information came from AmSat's page...
Right at the top of that page is a link to the Control Operator's page ...

Trust me: The latest AO-51 info is available right here and at work-sat.com. Honest.

Clint Bradford
AMSAT area coordinator


Re: AO-51 Question-o-matic

CatzMeow
 

Clint,
I had originally copied that set up, but had not revisited it in some time. It matches now.

The PL information came from AmSat's page...

http://www.amsat.org/amsat-new/echo/

Unless I'm misreading the information along the right side. I did not click on the schedule link, still learning...but just wanted you to know where I saw the PL info.

Thanks for all of your help,
Ed
KJ6BGS


Re: AO-51 Question-o-matic

K6LCS <clintbrad4d@...>
 

Have you programmed your radio per the programming chart on the tutorial at ...

http://www.work-sat.com

The chart is for the primary V/U mode - which AO-51 is in now.

NO Doppler correction for the 2M uplink.

Having the CTCSS on TX won't hurt anything ... But the "larger picture" is that if a Web site is stating it's necessary, then they are not interested in offering current information. We might turn the CTCSS requirement back on - to eliminate some interference problems accessing AO-51. You'll read about any changes right here, or on my Web site.

Clint, K6LCS


Re: AO-51 Question-o-matic

CatzMeow
 

Clint,
Darn and blast. That means I was being heard (sort of), right? I mean, if I am using PL where it is not required then I still get through vs the other way around... Or am I mistaken?

I thought that was too easy of a reason. :|

Thanks,
Ed
KJ6BGS


Upcoming Presentations and Demos

K6LCS <clintbrad4d@...>
 

The 2010 calendar is filling up ... Here are a few upcoming dates for my amateur satellite presentation. ALL are welcome to attend!

Desert RATS Palm Springs* - February 16
K6AA - LA Maritime Museum* - February 19
Cal Poly Pomona* - February 22
Victor Valley (CA) ARC* - March 9
Starke County ARC, Indiana - March 17
Orange County (CA) ARC - June 18
Mt. Diablo Amateur Radio Club - TBA
PACIFICON HamFest - October

Call or email me privately for info on any of the meetings!

Clint Bradford
clint@clintbradford.com
909-241-7666


Re: AO-51 Question-o-matic

K6LCS <clintbrad4d@...>
 

We haven't used a PL on AO-51 for about three years now. So, whatever site you saw "Use a PL for AO-51" on is not providing current info to you.

Stick with us ... (grin)

I notice a different uplink for FM QRP (no PL), should I be using this
with my FT-60 since it tops out at 5 Watts?
If you go to my site at ...

http://www.work-sat.com

... you can scroll to the bottom, and find a link to the AO-51 CONTROL OPERATOR page. THAT is the BEST-AVAILABLE information!

Here's what the CONTROL TEAM has for us ...

February 1 - February 7
--------------------
FM Repeater, V/U
Uplink: 145.920 Mhz FM
Downlink: 435.300 Mhz FM

FM Repeater, L/U (Subject to interuption for telemetry collection)
Uplink: 1268.700 Mhz FM
Downlink: 435.150 Mhz FM


February 8 - February 14
---------------------
FM Repeater, V/U
Uplink: 145.920 Mhz FM
Downlink: 435.300 Mhz FM

9k6 BBS and Telemetry
Uplink: 1268.700 Mhz FM
Downlink: 435.150 Mhz FM


Clint


AO-51 Question-o-matic

CatzMeow
 

Good Space-Oriented-Folks,
Had a clean pass of AO-51 as I was leaving work today, so I thought I'd give it a go (my timing has been not-so-good lately and I've been stuck with 6 am passes so I haven't made much of an effort in a while).

Had some trouble lining up the signal, and never quite came in clear, but I did hear some voices and could make out calls so I tossed mine out there....nothing.  Waited for someone to inhale and put it out there again, faster this time (I'll show you fast-talkers)...nothing again.

So I figured either the other kids on the box had gills and could talk and breathe in at the same time, or my PL was off.

Got home and dumped the FT60 into Commander and pulled up the details on Amsat.  Sure enough, my PL was old so I switched it all to 67.  Here are my questions:

I notice a different uplink for FM QRP (no PL), should I be using this with my FT-60 since it tops out at 5 Watts?

It has the same downlink?  Won't we just be stepping in with all of the high-powered kids and their cooler mega-watty toys?

The AMSat summary page  for AO-51 has a different d/l for QRP (435.15) but the Echo Project Page  showed QRP and regular on the same d/l.

That's it for now, I'm sure I'll have more as I start working through my other memories.

Thanks,
Ed
KJ6BGS


Re: HO-68 setup

K6LCS <clintbrad4d@...>
 

... This is FUN ...
I still get a thrill working three countries on some West Coast passes (Mexico, the U.S., and Canada).

Did you see the reply to your Doppler inquiry? I added that URL to the "Links" area here - thanks for bringing that up!

Clint


HO-68 setup

k7cwq <lorenrasmussen@...>
 

Setup is a handheld Arrow, with a tray similar to the one in the Files section. And a Yaesu FT-60R with a handheld mic and digital recorder
(rubber banded to my wrist). Nothing fancy. Sharing the bird with the digital ops makes it very noisy. From Central Oregon I worked Michigan, Texas, Florida, South Carolina and Mexico. It was a great morning. I started working the FM birds in November. I have 28 states and 82 grids confirmed. Closing in on VUCC. This is FUN.


HO-68

K6LCS <clintbrad4d@...>
 

... Had a great pass on HO-68 this am ...
Great work! What was your station setup?

... is a challenge with the digital transmissions going on ...
Please describe for us what this was like!

Clint, K6LCS


HO-68

k7cwq <lorenrasmussen@...>
 

Had a great pass on HO-68 this am.
2-5-10 1649z.
Made 5 contacts. 2 new grids.
It is a challenge with the digital transmissions
going on simultaneously. It is still being
commissioned so you have to check the "ON" times
for FM. Well worth the effort though.


Re: doppler question

K6LCS <clintbrad4d@...>
 

That is an EXCELLENT question - and it comes up all the time during my presentations.

The "easy" answer: There's less of a Doppler shift on the VHF side than there is on the UHF side - so working the FM LEOs doesn't require a Doppler correction for the VHF side of things.

The "engineer's" answer: The formula for the frequency shift is df = - f * dr/dt / c where f is the transmitted frequency, and c is the speed of light, and dr/dt is the rate of change of distance vs time. The only thing to remember from this formula is that things are simply proportional. Proportional to f, and proportional to dr/dt.

A "layman's" explanation: Go to this page, and you'll be an expert in describing the Doppler phenomenon to all ...

http://www.qsl.net/vk3jed/doppler.html

Clint


doppler question

k7cwq <lorenrasmussen@...>
 

I have been using an HT with an Arrow for several months now and
using the suggested tx/rx frequencies seems to work correctly.
You have to tune through the memories to change the rx freq to allow for the doppler effect. I understand that. My question is why don't I have to adjust the tx freq? I am a believer in "if it aint broke don't try to fix it", however, curious minds want to know.


Palm Springs RATS HamFest

K6LCS <clintbrad4d@...>
 

Had a great time yesterday at the Desert RATS annual HamFest. Quite a crowd ... free parking ... free admission ... and we worked the 1:01PM pass of AO-27, contacting Texas, New Orleans, and Patrick in Arizona.

Clint


Apple iPad

K6LCS <clintbrad4d@...>
 

The new Apple iPad runs almost all Apple App Store applications ... So - that means you can now have PocketSat3 on a beautiful 9" screen.

Photos at ...

http://tinyurl.com/y9u4or2


PACIFICON

K6LCS <clintbrad4d@...>
 

After a year's hiatus, PACIFICON is back! The hamfest is October 15-17, 2010 in San Ramon, California. Schedule isn't fixed yet ... but I'll be there working the birds and presenting "How to Work Ham Satellites with Your HT."

http://www.pacificon.org/index.html

Clint


Fullerton Radio Club

K6LCS <clintbrad4d@...>
 

Had a great time with the Fullerton Radio Club Wednesday night. We worked the 5:12PM pass of AO-51 in the rain ... then dried out at the Fullerton Senior Center for my sat presentation. AND there was fresh coffee and cookies for all ...

Clint, K6LCS
909-241-7666


Re: Voice recorder / headset question

MichaelE <k4moa@...>
 

Thanks for the advice guys. Somewhere in the house I have a Creative Zen Micro which has a built in microphone on it. I was hoping to have something with a line in so I could use a headset, but if I can find the Zen Micro I can give it a shot and see how things go.

Thanks again and 73's

Mike, K4MOA

--- In Work-Sat@yahoogroups.com, "walscobry" <walscobry@...> wrote:

Hello,

I'm new to the group, ham radio and working SATs but I do have a suggestion here.

I use a creative ZEN Stone MP3 player to record with.

Mine is 2GB and can record for many hours and the MP3 files it creates need no conversion like some digital voice recorders do. Its tiny about 1x1.5 inches charges over usb, works like a thumb drive (just mounts up like a disk so you can store photos, log data and other files on it), has a FM radio and of course can play music. The 2nd generation ZEN Stones also have a speaker built in. I got mine at target on sale for less than $20. I think they are out of production (at least the earlier models) so look around for a good deal. Oh, yeah it has a stopwatch and a clock as well. Nice little toy.


Re: New to group

K6LCS <clintbrad4d@...>
 

... KJ4QZJ ... Bryan ... new ham ... FT-817ND ...
WELCOME to the group. Looks like you, too, have the infamous "sat bug" disease ...

AO-51 and SO-50 programming charts for your FT-817 are on the support Web site of ...

http://www.work-sat.com

You've got all the equipment. Just settle on one (or more) sat tracking systems - whether free online info or a software program - and get on the birds!

Clint, K6LCS
909-241-7666

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