[amsat-bb] Re: Satellite Usage - 2012

[Clayton Coleman W5PFG]

And I thought CubeSat was just a platform.  Why condemn it to one mode/variety?

We have all kinds of CubeSats -- Beep Beeps, FM repeaters, Photo bugs,
Linear transponders, AX.25 beep-beepers, science fair projects.
Sounds a lot like the ham community -- diverse.

73
Clayton
W5PFG

On Tue, Aug 28, 2012 at 2:59 PM, Jim Jerzycke  wrote:
> I think most American hams associate "cube sat" with "easy sat", which
> equals an FM satellite, like AO-51.
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[amsat-bb] Re: FUNcube + SatPC32 + SDR-Radio

[Clayton Coleman W5PFG]

Hello Tom,

I would like to understand the reason for your comment about the
future being limited to FM satellites.  It seems FUNcube, FOX-2 and
Phase 3E projects would prove otherwise.

73
Clayton
W5PFG

On Mon, Aug 27, 2012 at 4:18 PM, Thomas Doyle  wrote:
> The future of the hobby is FM sats so this is all probably irrelevant
> but it is still fun and interesting.
>
> tnx & 73 W9KE Tom
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[amsat-bb] Extended rubber ducks / whips on an HT for LEOs

[Clayton Coleman W5PFG]

I think it's time to stop recommending people use AL-800 or SRH320
-style extended whips for LEO newcomers.  These antennas are very poor
performers for working either SO-50 or AO-27.  Even under an ideal
pass, using these antennas will likely result in many missed calls.
We all know "it can be done..."  So can running a dogsled race with
Chihuahuas.

Here's my case, which has been experienced time after time, on the
current FM birds:

1. New station decides to "give sats a try."  (Excellent - we should
encourage and provide proper guidance)
2. Station looks in drawer and finds an extended whip or buys one
based on recommendation from website or article
3. Station gets on a pass, hears a break in the noise and some partial
calls, so he gives his call sign
4. If the new station was lucky enough to capture the bird, likely
other stations will "pounce" on the new guy and perhaps call
incessantly
5. Perhaps the new station will hear the bird again for a minute,
thinking it is clear, and gives their call sign
6. Repeat step 4-5; continue until LOS (many fewer good contacts are made)

When we had AO-51, reception on an extended whip was more viable.  Now
with AO-27 and SO-50, these "extended" rubber ducks have become much
less viable options. Often the stations on a whip do not take into
account their "handicap" and try to make contacts even though they are
not hearing the bird.

It’s time to retire these extended whips as a recommendation since
there are both inexpensive commercially-available gain antennas and
many good home-brew designs.

73
Clayton
W5PFG

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[amsat-bb] WTB a "beater" FT-817 for sat rx

[Clayton Coleman W5PFG]

I'm looking for an inexpensive FT-817 (don't care it's a "D" or "ND"
model.)  It doesn't need to be cosmetically pretty.  I don't
necessarily need any of the accessories.  Not interested in "packages"
with all the accessories and after market accessories unless it's
really, really cheap.

Need it for a satellite-related project.  Email off-list please.

Thanks & 73
Clayton
W5PFG
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[amsat-bb] Re: AO-07 mode?

[Clayton Coleman W5PFG]

Checking the web page at http://oscar.dcarr.org/ is the best
indication/predictor of mode A/B operation I've found.

73
Clayton
W5PFG

On Sat, Jul 14, 2012 at 8:05 PM, Tom Gentry  wrote:
> Is AO-07 mode hopping or stuck in one mode at the present? On 14 July 2012;
> at 23:55 UDT, I just had a nice 40 degree high pass  and heard nothing on
> 145 MHz.  Me or the bird?
>
> Tom K5VOU
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[amsat-bb] W5PFG/R recent trip QSL's

[Clayton Coleman W5PFG]

If you need a QSL card for any of my grids operated over the last ten
days, please email me the QSO detail.  No need to send me a card.

All of these contacts are uploaded to Logbook of the World.

73
Clayton
W5PFG
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[amsat-bb] Re: Update from 2M1EUB rover in Scotland

[Clayton Coleman W5PFG]

Real rovers and portables can appreciate Paul's situation.  I just
wrapped up logging efforts for my last ten days on the road.  It is
amazing the various conditions in terrain, weather, and even the hams
on a pass that makes /R and /P such a thrill.   Sometimes pushing the
"rover" envelope not only gives out rare grid squares, it is a test of
skill, and sometimes record-setting!

73
Clayton
W5PFG

On Mon, Jul 2, 2012 at 3:40 PM, Daniel "Nick" Kucij
 wrote:
> Got an update today from Paul, 2M1EUB:
>
> "hi nick im in io88 sq hope to b on soon ,poor wx rain nonstop has put me
> off seting up...may be on 2morr. paul"
>
> 73, Nick
> KB1RVT
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[amsat-bb] FM LEO sats on Field Day - A unique perspective

[Clayton Coleman W5PFG]

On Saturday, I was at around 2600-3200 ft elevation going through
Skyline Drive in Northern Virginia.  I hadn't planned on working any
satellite passes since I was a portable station and not participating
in Field Day, but I stopped to listen to two AO-27 passes in the
afternoon.

The first pass, I was facing the west side of the mountains.
Amazingly, I heard 4 stations trying to get into AO-27 on the uplink.
I was hearing them direct on 145.85.  The funny thing is, not one of
them ever was picked up by AO-27.  Secondly, 2 of the 4 stations kept
giving their callsign over and over from AOS to LOS, even with AO-27
being on a seven minute timer.  This tells me a couple of things: 1.
They don't know how AO-27 operates and 2. They apparently weren't
listening to the bird.  I tried calling two of the strongest stations
on 145.85 after the pass, thinking they might be listening.  Nope.  I
never heard a response.  Makes me wonder how many people leave the
volume up on the uplink side of their setup (if running full duplex.)

The second pass, I was pleased to hear several "5 land" stations
making contacts through the madness.  However, I heard several
different stations on the uplink.  This time it was the usual variety
of "hello hello hello" and "test 1 2 3."  Again, I was hearing this
trash all on the uplink 145.85...  The sad part is, I never heard a
callsign.  It sounded like 2-3 different stations trying than on the
first pass.

I realize the satellite hears a lot more crap than I could ever hear
at 3200 feet, but it was a very interesting perspective I've not
encountered before.  I have been in areas when other stations (local)
were on the birds, but this is different -- one of the stations I
heard on the uplink was 200+ miles away.

73
Clayton
W5PFG
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[amsat-bb] W5PFG/R grid operations for June

[Clayton Coleman W5PFG]

I will be doing a little grid expedition in late June through numerous
grids.  These are not all rare but anyone who has worked me previously
knows I will QSL via paper and Logbook of the World.Email me directly
if there are specific grids in this list you need/want and I will try my
best to set a schedule with you.  I plan to operate AO-27, SO-50, and
FO-29.   It is not guaranteed I will operate from all of these grids but
they have significant coverage of the roads I'll be running.

EM32, EM42, EM52, EM62, EM63, EM74, EM75, EM86, EM96, EM97, FM07 FM08,
FM19, FN10, FN20, FN30, FN32, FN41, FN42

73
Clayton
W5PFG
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[amsat-bb] Re: Ham Spirit

[Clayton Coleman W5PFG]

Maybe we should bring back the guillotine?

On Wed, May 30, 2012 at 4:44 PM, Clint Bradford
wrote:

> Well, I ask, WHEN did the true spirit of ham radio CHANGE to the point
> where we can demean fellow hams
> in public message groups  - WITHOUT simply contacting an "offending" ham
> privately to see if we could help
> them with their system?
>
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[amsat-bb] Re: Antenna suggestions for mounting on vehicle for sat work.

[Clayton Coleman W5PFG]

Lee,

I have yet to find a better solution for FO-29, SO-50, and AO-27 mobile
than a combination of small UHF yagi with preamp for the downlink and a VHF
vertical for the uplink.  While the quadrifilar helix, eggbeaters, and 19"
whip all work, nothing gives me a 100% copy of all the LEO's from AOS to
LOS like the yagi/preamp combination.

I've tested the above mentioned fixed antennas for downlink across a
variety of Texas terrain and surrounding noise environments.  They all
work, some better than others, but are no where near the performance level
of a directional antenna.   Since I'm a firm believer that hearing the bird
is #1, I do not compromise with a vertical.   It's safer for me to pull my
vehicle over to a parking lot or rest area to work passes.  I have done a
few passes "in motion" with both the quad and the 19" whip and quite
frankly terrain/obstructions play such a huge role I hardly recommend even
attempting to do it unless you are on a flat, high plain.

73
Clayton
W5PFG

On Thu, May 24, 2012 at 3:02 AM, Lee Maisel  wrote:

> Any ideas on a good antenna combo for mounting on a large vehicle?
>  Possibly roofrack, specifically for satellite work?
>
> Thanks!
>
>
> Lee
> W5LMM
>
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[amsat-bb] W5PFG/P EL28

[Clayton Coleman W5PFG]

If you need grid EL28 confirmed, please email me off-list.  I will have an
opportunity to activate it within the next 24 hours.

Thanks,
Clayton
W5PFG
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[amsat-bb] April 2012 Issue of World Radio

[Clayton Coleman W5PFG]

For those who receive World Radio magazine, check out the article beginning
on page number 20.  It features one of our avid grid chasers and satellite
enthusiasts here in North America.

73
Clayton
W5PFG
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[amsat-bb] Re: Lego™ 1U Cubesat,launch confirmed April 2012

[Clayton Coleman W5PFG]

When will the LEGO CubeSat be available at local retailers?  I want one!
Will the special glue be included?  I'm anticipating the release of the
full-scale VEGA rocket in LEGO next year.

73
Clayton
W5PFG

On Sat, Mar 31, 2012 at 6:31 PM, Rob Styles  wrote:

> The next generation Cubesat.
> http://www.uk.amsat.org/6194
>
> Rob
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[amsat-bb] ISS packet BBS gripe

[Clayton Coleman W5PFG]

It would be nice if people would refrain from connecting to the ISS packet
mailbox when others are engaged in unproto-mode conversations (making
contact between 2 or more live people.)  It's especially annoying on
weekends during the day.

It's apparent that the people who connect to the RS0ISS-11 during a busy
pass do not realize how #1 they clog up the channel with retries and #2
they clog up the channel with retries or how they clog up the channel with
retries.

Obviously if you are on a pass in the middle of the night and can't find a
live person through the endless unattended beacons, connecting to the
packet BBS isn't as big a deal.

OK, I'm done griping.  I sure love making contacts via ISS!  It's a fun and
underrated resource we are truly blessed to have at our disposal.

73

Clayton
W5PFG
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[amsat-bb] QSL's for W5PFG/R EM13, 14, 16, 17

[Clayton Coleman W5PFG]

If you would like a paper QSL card for any of the EM13-17 grids I worked
this week, please email me directly off-list and I will send you one.  No
SASE req'd.

I will be uploading these to Logbook of the World over the weekend.

73
Clayton
W5PFG
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[amsat-bb] W5PFG/P EM14-16, 20-22 Feb 2012

[Clayton Coleman W5PFG]

I've the opportunity to work from EM14, EM15, and EM16 this week.  If these
grids are on your wish list, email me off-BB.  EM15 encompasses Oklahoma
City and is not too rare.  I have worked EM14-15 previously on other
trips.  FM satellites only, this trip.  I'm working on adding a compact SSB
station to my work-mobile soon.

73
Clayton
W5PFG
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[amsat-bb] Bravo, K8YSE (Working UT1FG/MM Primer)

[Clayton Coleman W5PFG]

John K8YSE has prepared an excellent "working Yuri" primer for those trying
to make a contact with UT1FG/MM.

It is full of proverbs relevant to OLD and NEW satellite operators.  Take a
minute to read it if you are currently active.

Scroll down about 1/4 way through the web page:

http://www.papays.com/sat/general.html

73
Clayton
W5PFG




If you are busy whining about the lack of HEO birds and griping about the
usable satellites we have left, this message is not intended for you.
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[amsat-bb] Re: moving Sat contacts to LOTW and DXLab

[Clayton Coleman W5PFG]

>
> And make sure to include your grid when you define a station location
> in the TQSL program!  Otherwise you get confirmation for the QSO, but
> it is useless toward a VUCC award.  Multi-grid QTHs work fine in LOTW,
> too.
>

It is important to note that if you have operated from a single location
covering more than one grid (i.e. a 2 or 4-way grid boundary), you should
upgrade your TQSL configuration file.  You do this by logging into LotW,
going to "Your Certificates" and clicking on the "Download current TQSL
Configuration file."  Even if you downloaded the "latest" TQSL, you may
still need to perform this update.

If you create a TQSL "Station location" containing more than one grid
(seperated by a comma and space,) your grids beyond the first grid may get
depreciated.   Several stations, including myself, have witnessed this
behaviour.  To test it, go create a new station location with two grids.
Example: "DM00, DM01"  Save that station location.  Go back into it and see
if both grids appear.  If only the DM00 grid appears, you need to update
your TQSL Configuration file per instructions in above paragraph.

73
Clayton
W5PFG
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[amsat-bb] Re: moving Sat contacts to LOTW and DXLab

[Clayton Coleman W5PFG]

I will be very interested to see what "QSL rate" you get after uploading
16K contacts.  I highly encourage others to utilize LotW for satellite
confirmations.  I personally love paper and always QSL via mail but enjoy
the "instant gratification" of a Logbook of the World QSL.

Out of roughly 1200 satellite contacts I've uploaded, I am seeing a 4% QSL
rate via Logbook of the World.  Most of those are repeat contacts who
regularly upload to LotW like me.

Just for other statistics... I have only confirmed 63 grids of the 200+ I
have confirmed on paper.  And the majority of those 63 LotW confirmations
are from stations like WD9EWK or K8YSE who have gone rover.

My advice is to ensure your satellite names and grids (yours and theirs)
correctly match up for all contacts.  It is critical for LotW satellite
confirmation.  If you did any portable or rover satellite work outside your
home grid, this becomes very critical.

73
Clayton
W5PFG

On Sun, Feb 12, 2012 at 10:23 AM, Jeff KB2M  wrote:

>
> I'm in the process of moving my main logging program from LOGIC to DXLab.
> I've been using DXLab for years as a backup and also to track my LOTW
> progress. I never really tried to include my 16,687 satellite contacts into
> this until now. I vaguely remember this subject, subject being sat contacts
> in LOTW and DXLab. I'm looking for help in doing both. If anyone wrote
> anything up, like a procedure to follow it would be greatly appreciated. I
> tried searching the DXLab documentation this morning and I was overwhelmed,
> there is a lot of it :-) Thanks in advance for any help...
>
> 73 Jeff kb2m
>
>
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[amsat-bb] Re: Wyatt AC0RA, a skilled and dedicated operator

[Clayton Coleman W5PFG]

Wyatt has been working on a website covering a lot of his work on the
satellites.  It has photos and descriptions of some of his gear (his
satellite box is cool):

https://sites.google.com/site/radiostationac0ra/


On Sat, Jan 28, 2012 at 2:18 PM, John Geiger  wrote:
> I have worked Wyatt many times on the FM sats but didn't know he was doing
> the SSB sats until recently when I saw his posting looking for Hawaii on AO7
> or FO29.  Do you know what he is using for a satellite radio on those sats?
>
> 73s John AA5JG
>
> - Original Message ----- From: "Clayton Coleman W5PFG"
> 
> To: "AMSAT" 
> Sent: Saturday, January 28, 2012 4:01 PM
>
> Subject: [amsat-bb] Wyatt AC0RA, a skilled and dedicated operator
>
>
> Wyatt Dirks AC0RA is very passionate about his satellite operations.
> Having started with a home brew antenna, he has experimented with
> several portable station configurations including LPDA’s, commercial
> Arrows, and recently added a 13-element M2 beam.
>
> Just today, January 28, he made a 6,941km contact with ON4HF using
> AO-7 mode B.   While this is several hundred kilometers below the
> distance record for mode B contacts, it is important to note that
> Wyatt performed this feat completely portable, without a set of
> cross-polarized beams, without automated antenna tracking, and more
> importantly – out in the cold Iowa weather.
>
> He’s recently been making contacts with other stations in Europe.
> This does not come easily in a portable setting from the mid-USA
> states.    Many folks who have been around for a long time, who have
> “been there and done that,” may not see this as much of an
> accomplishment.   I assure you if we had satellites capable of greater
> distance contacts, Wyatt would be on them pushing the limits of their
> capabilities with minimal equipment.
>
> Not only does Wyatt posses the right equipment, he demonstrates skill
> and dedication, something uncommon in young men his age just shy of 20
> years old.  We should encourage operators of this caliber as they will
> be our future engineers and friends in the space frontier.
>
> 73,
> Clayton
> W5PFG
>
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[amsat-bb] Wyatt AC0RA, a skilled and dedicated operator

[Clayton Coleman W5PFG]

Wyatt Dirks AC0RA is very passionate about his satellite operations.
Having started with a home brew antenna, he has experimented with
several portable station configurations including LPDA’s, commercial
Arrows, and recently added a 13-element M2 beam.

Just today, January 28, he made a 6,941km contact with ON4HF using
AO-7 mode B.   While this is several hundred kilometers below the
distance record for mode B contacts, it is important to note that
Wyatt performed this feat completely portable, without a set of
cross-polarized beams, without automated antenna tracking, and more
importantly – out in the cold Iowa weather.

He’s recently been making contacts with other stations in Europe.
This does not come easily in a portable setting from the mid-USA
states.Many folks who have been around for a long time, who have
“been there and done that,” may not see this as much of an
accomplishment.   I assure you if we had satellites capable of greater
distance contacts, Wyatt would be on them pushing the limits of their
capabilities with minimal equipment.

Not only does Wyatt posses the right equipment, he demonstrates skill
and dedication, something uncommon in young men his age just shy of 20
years old.  We should encourage operators of this caliber as they will
be our future engineers and friends in the space frontier.

73,
Clayton
W5PFG

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[amsat-bb] Re: HI4/AJ5C today

[Clayton Coleman W5PFG]

Hi Bob,

I will be on that pass repeating the words "HANDHELD,"  "PORTABLE"
(even though I'm in the backyard, and "QRP" (not using 100 watts) over
and over again.  Of course I will make sure to give my call sign
several times, slowly, and with improper phonetics.   The best part
is, I will squelch out the down link as to not hear any replies.
Would you like me to use the "ON THE ARROW" or "ELK" designator, too?

T G I F - Hope you enjoy the satire!

73
Clayton
W5PFG



On Fri, Jan 27, 2012 at 9:21 AM, Bob Herrell  wrote:
> I will be on AO-27 at 1853z turn on and will be listening for the following
> who asked for a contact today: AA5PK, K3CLM, N9IP and AJ4A. I hope to be
> able to make these contacts and more if the situation allows.
>
> 73, Bob HI4/AJ5C
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[amsat-bb] QSL backs for roving satellite operators

[Clayton Coleman W5PFG]

Has anyone designed a QSL card back for satellite operators who
operate a lot of rover?  I am trying to trim cost and time associated
with multiple cards to QSL my rover contacts.  In the past I have hand
written many /P cards and some image-based cards using photo printers,
but would like to order a better quality card with an image front and
QSO data on back.

I'm looking for a QSL card back that has room for pertinent
information such as my rover grid, satellite, and the necessary items
to confirm a valid QSO for award purposes.  The idea would be for the
card to support at least four QSO's.

My question is -- has anyone designed such a card and are you willing
to share with me your image?  Perhaps someone is a real graphics hound
and would like to help?

Thank you & 73,

Clayton
W5PFG
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[amsat-bb] Full Duplex, Pre-amplifiers, LIDs, and Know-it-all's

[Clayton Coleman W5PFG]

Having a computer controlled, full duplex station with azimuth and
elevation rotation, receiver pre-amplifiers, and high gain antennas is
nice.

Being able to point your small yagi antenna at the sky and work an FM
transponder anywhere in the world with a HT is nice.

Both scenarios require a common element for success: the operator's skill.

Rather than attack others' ideas of a "perfect satellite station," why
not try to support each other in becoming better operators?

Having the right equipment is truly important.  Having the right
skills to operate, in my opinion, is much more important.  It is
doubtful that everyone on this mailing list will ever agree what
comprises "the ultimate satellite station."  While some favor
flexibility of portable operation, others may strictly utilize the
highest gain antennas available.

Next time you hear some bad operating practices, consider writing a
kind note to the offending station.  Be considerate that the station
may be unaware of their satellite faux-pas.  Perhaps they are new and
have had little guidance from an Elmer.  Take the opportunity to
welcome the station and introduce them to the "right way" of doing
things even if they are not using your favorite radio or antenna.
Good ham radio operating skills are not typically an inherent quality
of man -- it takes time to develop them.  At some point in history,
you made your first contact.

73
Clayton
W5PFG
Still learning 20 years after receiving my novice class license.
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[amsat-bb] Re: ARISSat-1 Operation Survey

[Clayton Coleman W5PFG]

They are on page 25 of the 2011 AMSAT Symposium Proceedings.

On Mon, Jan 16, 2012 at 11:25 AM, Clint Bradford  wrote:
> The ARISSat-1 team created an "Ops Survey" last September. Have the results 
> been published anywhere?
>
> Clint Bradford, K6LCS
>
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[amsat-bb] Anyone using Heil Traveler w/FT-847?

[Clayton Coleman W5PFG]

Before I make a purchase and construct a custom cable, is anyone using
a Yaesu FT-847 with a Heil Traveler headset?

If so, would you please share with me your results/feedback of this
configuration?

Thank you,
Clayton
W5PFG
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[amsat-bb] Re: Very Interesting Radio - Possible Sat Use

[Clayton Coleman W5PFG]

Excellent idea and post, Tom.

I have posted two YouTube videos of the Baeofeng UV-3R being used for
satellite work.  I would suspect performance of the UV-X4 to be
similar in nature.  AC0RA and I have made a few "Baofeng to Baofeng"
contacts to test the performance on several of the LEO FM satellites.
Timing and antenna orientation is key and I would recommend two the
radios be used for full-duplex, as in your suggestion Tom.

Here's a video of receiving AO-27 using the stock rubber duck:
http://www.youtube.com/watch?v=aYZyC_vkew0

here's a video of receiving AO-51 using an Arrow:
http://www.youtube.com/watch?v=oRN4uJXvnK0

(I did make a contact on this AO-51 pass, though I wouldn't recommend
it because of the semi-duplex limitation)

73,
Clayton
W5PFG

On Thu, Jan 12, 2012 at 9:49 AM, Thomas Doyle  wrote:
> This may have been discussed previously but just in case it has not.
>
> I purchased an interesting radio that might be an inexpensive way to
> operate full duplex on the FM sats.
> The radio cost $65 including shipping and all accessories. It runs 2W on
> both 2M and 70cm. It has
> almost all the bells and whistles you would expect on a dual band handi. 99
> memories - tone squelch ...
>
> In addition to the low cost the radio is very small. See pic - I have
> fairly normal size hands so you can see how
> small it is.
>
> http://www.tomdoyle.org/UV-X4.jpg
>
> I purchased it expecting the worst. Much to my surprise it actually works
> quite well. The menu system is
> the most intuitive I have found on any radio. The only negatives I could
> find were
>
> - no channel lockout when scanning - I put the local weather station in one
> of the memories.
>  Since it is always on you can not use the scan function.
>
> - I fully expected a radio of such a small size would not have adequate
> sound from the speaker.
>  In fact the sound from the speaker is really loud. Everything is set
> using a rotary digital switch
>  with detents. This works great for selecting channels and using the menu
> functions. There are
>  only 9 detent positions for the volume. The lowest volume setting is
> mute, one click up and it is
>  loud and it keeps getting louder as you go up. There was nothing wrong
> with my radio - they
>  all do it.
>
> - no DTMF pad
>
> None of these negatives affect the use of the radio with an FM sat. You
> could buy a pair of these
> for $130 including shipping. Add a diplexer and Elk/Arrow antenna and I
> think you would be good to
> go with a very compact low cost full duplex portable FM station.
>
> I bought mine from http://www.maintradingcompany.com and received excellent
> service. In case you
> were wondering what the goofy looking LED between the switch and the
> antenna is - it is for the
> flashlight function the radio offers as a feature. The flashlight feature
> is invaluable :-)
>
> Sent from my computer.
>
> W9KE  Tom Doyle
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[amsat-bb] Re: Enhance your Easy Sat Experience!

[Clayton Coleman W5PFG]

I have made 1000+ contacts via satellites using a TM-D700 and TM-D710.  The 
receive is excellent. Without a preamp, I can work any of the current FM birds 
from AOS to LOS.  I'm always on the lookout for deals on used ones locally.  I 
actually prefer the 700 for portable since I can run a serial cable right to 
the front of the radio to interface with UISS on my laptop. 

73
Clayton
W5PFG

Sent from my mobile phone. 

On Jan 6, 2012, at 7:10, "Bob Bruninga"  wrote:

> There are 10's of thousands of these Kenwood radios out there, and many
> people upgraded from the D7 and D700 to the D72 and D710 for the enhanced
> APRS functions.  But the full duplex dual band radios remain the best there
> is for full duplex FM satellite AND APRS satellite work.
> 
> Bob, WB4APR

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[amsat-bb] Enhance your Easy Sat Experience!

[Clayton Coleman W5PFG]

Have you thought about upgrading your station to full-duplex capability?

I realize that many amateurs jump into the satellite fray by utilizing
an existing handheld radio and an antenna like the Arrow, Elk, or
tape-measure beam. It's a great way to get your feet wet and make
that "first" contact via the birds.

Now, let's look at how we can do BETTER.

Full-duplex has a very important purpose in the satellite world. It
allows you, the ground station, to know that your signal is being
received and retransmitted by the satellite. I’m not saying it is a
mandatory but once you see its benefit, you may never want to go
“semi” again.

How do you really know you are being heard by the bird if you can't
hear yourself? Answer: You don't.

How do you know another station wasn't already being captured by the
bird and in the middle of a QSO when you transmit? Answer: You don't.

Let's talk about HOW to do full-duplex. First of all, you don't need
base-station radios like the Icom IC-9100, IC-910, Kenwood TS-2000, or
Yaesu FT-847. If you own two handhelds, chances are you have what you
need!

What you need is at least one radio capable of transmitting on the
uplink and one radio capable of receiving on the downlink. For
example using AO-27:

1. A 2m-only HT, set to the satellite's uplink, ~145.85 MHz.
2. A 70cm-only HT, set to the satellite's downlink, ~436.795 MHz.

One added benefit is that while hearing the downlink, you can twist
your handheld
antennas (like the Arrow) to match polarity and peak your uplink.

Technically you do not even need a radio capable of transmitting to
hear yourself on the downlink. A scanner or pocket receiver works
dandy!

To get into full-duplex inexpensively, there are numerous options.
You can buy a NEW Baeofeng UV-3R for about $50-60 USD, shipped. This
radio could serve as an uplink or downlink radio, depending on your
need. I’m not peddling these radios but using them as an example.

If you have the Arrow with the built-in diplexer, simply bypass it by
running a patch cord from each radio to the respective UHF and VHF
beams. If you are running an Elk or tape-measure 2m beam, you will
need an inexpensive diplexer to give you both 2m and 70cm feed points.
One can be constructed easily or purchased from numerous vendors for
$30-80.

Give full-duplex a try. You will not only help the satellite
community by eliminating unnecessary hetero-dyning tug-of-war, it will
generally make you sound better on the birds! Oh, and use a pair of
earphones or a headset when you give it a try to avoid feedback.

73,
Clayton
W5PFG

Here are some more example full-duplex combinations:

Wouxon HT - Downlink
2m only-HT - Uplink

FT-60R - Uplink
Baofeng - Downlink

Handheld scanner - Downlink
Dual-band HT - Uplink

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[amsat-bb] Re: Email via ISS/APRS

[Clayton Coleman W5PFG]

I agree, Kevin. The unattended beacons seem pointless. Unlike propagation 
beacons, these don't really tell us anything.  My guess is these people are 
beaconing every minute or so 24x7, ISS passing or not. 

Satgates don't need to identify to be beneficial.  My dad and I have both 
successfully tested experimental Satgates using just a simple receiver with a 
ground plane, feeding into a computer sound card.  This is essentially all you 
need to relay ARISS-digipeated frames to the APRS-IS network. 

73,
Clayton

Sent from my mobile phone. 

On Jan 5, 2012, at 19:56, Kevin Deane  wrote:

> 
> Ok so I think that this all fine and dandy and even more so if it keeps 
> people from logging into the BBS and ruining the pass for everyone else. I 
> dont think that an email sent via ISS would be considered a Qso but still 
> pretty neat. In between the beacons there are Two Way Communications made on 
> the ISS Digi.
> 
> What I do not understand is the Beaconing. What is the point? So that while 
> you are at work, or sleeping, your callsign shows up on arris.net? In doing 
> so you Beaconers not only clog up the passes but have basicly killed NO-44.
> 
> If you are going to use the ISS or a satellite you should be there at your 
> station and not be like the very annoying automated menu you get when trying 
> to get through to a human being on the phone.
> 
> By the way Unproto CQ via WIDE2-2 or RS0ISS-4  then k or CONVERSE  :EMAIL
> :summit...@live.com Type mess here works great there is no need for the 
> Beacon...
> 
> Just my opinion.
> 
> Kevin
> KF7MYK
> 
> 
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[amsat-bb] Re: What Happened to the PacSats?

[Clayton Coleman W5PFG]

I've been wondering if the issue is not lack of interest but lack of
education and marketing.  If newer hams were to see and understand the
benefits of a store-and-forward PacSat, I believe you'd see a level of
support as strong as days passed.  I have been playing with
terrestrial packet and digital modes for 20 years and the thought of
exchanging messages via satellite excites me.  Unfortunately I did not
partake in the PacSats' capabilities when they were functional.

73
Clayton
W5PFG


On Wed, Jan 4, 2012 at 1:24 PM, Alan P. Biddle  wrote:
> Chris,
>
> Like you, I really enjoyed the old digital birds.  However, the interest in
> that has fallen off.  AO-51 did have a very nice system, and a few other
> satellites have had more traditional Packet BBS capabilities.  The interest
> just does not seem to be there, when the old satellites died, there were not
> replaced.
>
> 73s,
>
> Alan
> WA4SCA
>
>
> -Original Message-
> From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
> Behalf Of Chris Maness
> Sent: Monday, January 02, 2012 9:56 PM
> To: amsat-bb@amsat.org
> Subject: [amsat-bb] What Happened to the PacSats?
>
> About 12 years ago, I was really into amateur radio satellites (the
> analog birds).  I always wanted to try the PacSats, but I was a
> college student, and could not afford all of the necessary hardware.
> I tried to do it in software (and ended up falling in love with
> Linux).  Now I have a good source of income, and was looking into
> dabbling in the PacSats, but looking at the Amsat website, it looks
> like none of the old birds are up.  So are there any plans to restore
> store and forward messaging capability in future ham radio birds?  Is
> this currently still possible and I am just missing something?
>
> Thanks,
> Chris Maness
> KQ6UP
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>
>
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[amsat-bb] Need grid EL28 confirmed?

[Clayton Coleman W5PFG]

Email me off-list if you need the grid EL28 confirmed.  I am going to
make a brief trip there later in the week and have several people
who've expressed they need it confirmed.  I will do at least one pass
on an FM satellite.

73
Clayton
W5PFG
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[amsat-bb] Re: Need East Coast

[Clayton Coleman W5PFG]

Since becoming active on satellites again in April 2011, I have
managed to work 48 states on the FM transponders with portable
equipment.  I did not set out to accomplish this minor feat on FM
alone because I do also operate VO-52, AO-7, and FO-29 /P.  Hawaii is
impossible for me unless AO-7 is used.  New Hampshire is the other
state I need but I've got several options to get it confirmed if I
would just sit down and schedule one with friends.  Maine is not
common but New Hampshire seems less common in my ~8 month window of
activity.  All good award confirmations come to those who wait, right?
 What fun is chasing an award if it's easy?

There are lots of active grids, states, and countries available for
paper chasers on the birds.  More importantly, there are many genuine
and experienced operators for which the satellite community can be
grateful.  Whether a casual operator, a paper chaser, or DX-hound, the
current operational birds have a lot to offer proportionate to what
you put into working them.

My suspicion is there is a group of "been there, done that"
experienced operators that don't get on and operate much any more.
Maybe this is because there's not a HEO satellite, maybe they have all
the wall paper they want, perhaps they get annoyed the LIDs on FM
transponders, or maybe they are just waiting on the "next great bird"
to get them active again.  In any case, I would invite those of you
who have not operated the current satellites in recent times to get on
the air so that some of us "newcomers" have a chance to be acquainted
with you.

Looking forward to contact with you in 2012.

73,
Clayton
W5PFG


On Mon, Jan 2, 2012 at 8:32 PM, k6yk  wrote:
> There were actually a lot of easterners on AO-27 this day on the
> first pass for me, about 3.5 degree elevation max.   I heard no
> Maine, though. But I have worked almost every grid in Maine and
> most of the counties.  Actually all the grids in W1, 2, 3, 4 lands except
> one in Maine,  but not lately!
> Keep trying!  It doesn't happen overnight. Took me several years
> of waiting for Vermont and Delaware to finish WAS.
>
> 73,
> John, K6YK

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[amsat-bb] Re: ISS BBS

[Clayton Coleman W5PFG]

It is annoying when someone connects to the ISS mailbox during a
"prime time" pass.  If it's the middle of the night when it's passing
by us, that's usually no big deal because very few "live" stations are
at the keyboard.  My personal rule is I don't connect to the mailbox
inside the hours of 0600-2300 and if I see any stations actively
sending out CQ.

Secondly, it is even more annoying when someone connects to the
mailbox and they can't keep a connection, usually because they are
running some multi-band or high-gain vertical with too many nulls to
actually keep a connected packet session established.  I see it a lot,
Kevin, but just deal with it I can tell when this is happening
just by the sound of the packets.  Once I start hearing a certain
pattern, I know the pass is likely shot for having any real contacts.

Regarding an unpublished email address, if you want to contact the
"offending" station, we have this thing called a call book or FCC
database that typically offers a station or mailing address for the
individual.  An old fashioned letter or QSL with a note works wonders.

On Mon, Dec 19, 2011 at 10:47 PM, Kevin Deane  wrote:
>
> The ISS Maildrop is great for people in low population areas. I found out the 
> hard way about using it in the US. Now I and others on the west coast are 
> suffering because a certain someone keeps logging in EVERY pass and is not 
> even holding the connection. The email address is no good on QRZ. ARRGG!!!
>
> Anyway it still is fun to make Qso's on the Digi just thought since there are 
> not as many birds up there to play with there might be more activity on the 
> ISS. Have not heard much on FO-69? Are people workin that? My radio is in the 
> shop so I have been off the air and only have a 5watt deaf dualbander... :(
>
>
> Kevin
> KF7MYK
>
>
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[amsat-bb] W5PFG/P EM03 (Correction & Pass)

[Clayton Coleman W5PFG]

I originally said November 19, but I meant to say December 19.  I will
be operating from EM03 on SO-50 at 10:00 UTC 19-12-2011.  Later that
same day and the following, I will also be found in DM94-95, and DM85.

73
Clayton
W5PFG
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[amsat-bb] W5PFG/P EM03

[Clayton Coleman W5PFG]

Several stations have emailed me asking when I might be available to
do an activation of grid EM03.  There are several SO-50 passes I can
work in the very early morning hours on the 19 of November.  If you
need this grid EM03 confirmed, I am more than willing to do it.
Please email me directly, off the BB.

Thank you & 73
Clayton
W5PFG
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[amsat-bb] DM83-93, DM72-82, and EM31 QSL's

[Clayton Coleman W5PFG]

If we worked from DM83-93, I will QSL all stations in log.  No need to
QSL or SASE.

If we worked from DM72-82, I will QSL all stations in log.  No need to
QSL or SASE.

All of the above contacts will be in LotW by 12/13.

Since EM31 was a quick roadside activation, I will not QSL unless you
make a request for it.  No SASE needed, just email me the QSO details.
 If you need it in LotW, say so in your email.

73
Clayton
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[amsat-bb] W5PFG/P to Grid EM31, 10 Nov 2011

[Clayton Coleman W5PFG]

I will be traveling to EM31 tomorrow afternoon, 10 November.  If you
need grid EM31 confirmed, please email me.  There are a couple of
SO-50 passes I will be able to work but only if requested.

73
Clayton
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[amsat-bb] A simple request made in a timeless video

[Clayton Coleman W5PFG]

This classic YouTube video expresses one young gentleman's concern for
the future of amateur radio satellite enthusiasts:

http://www.youtube.com/watch?v=1sONfxPCTU0

In the last few seconds of the video, an appeal is made to all generations.
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[amsat-bb] FASTRAC 1 Digipeating?

[Clayton Coleman W5PFG]

Anyone else try to send packets via FASTRAC 1 on the most recent two
passes late evening over North America?  I only received the CW beacon
and one burst of telemetry on each of the two passes over East Texas.
I did notice on the first pass that my Keplerian elements were off by
a little bit but had corrected it in time for the second pass around
05:15 UTC 3-12-2011.  I tried both 1200 and 9600 packet to no avail.

73
Clayton
W5PFG
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[amsat-bb] Grid activations DM82-83, DM92-93

[Clayton Coleman W5PFG]

Next week I will be traveling to West Texas grids DM82-83 and DM92-93.
 I will probably activate other grids as pass times and my business
travel allow.   Some have expressed interest in me activating DM73 and
there exists a possibility of a convenient DM73/83 grid line pass.

Please email me If you need any of these grids confirmed and I will
work with you to make it happen.  I'm able to work AO-27, SO-50, and
the ISS digipeater easily from my portable setup.  I realize that
these satellites don't have the capability of a telephone-quality call
to Italy but these satellites are very convenient to mobile operators
and those seeking grids for awards purposes.

73
Clayton
W5PFG
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[amsat-bb] W5PFG/P 18-22 November - QSL's

[Clayton Coleman W5PFG]

I have uploaded all contacts from my most recent grid trip to Logbook
of the World.

If you emailed me QSL requests, you have top priority and should
receive cards within a week -- NO SASE required.

73,
Clayton
W5PFG
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[amsat-bb] Re: This Is a HOBBY people

[Clayton Coleman W5PFG]

Kevin,

I'm afraid you have used improper terminology and upset the demigods
of the satellite community.

Some relevant definitions from the Merriam-Webster Dictionary:
- Leisure (n): time free from work or duties
- Hobby (n): a pursuit outside one's regular occupation engaged in
especially for relaxation
- Amateur (n): one who engages in a pursuit, study, science, or sport
as a pastime rather than as a profession

This quote sums up my thoughts about this unfortunate series of email threads:

"We have met the enemy and they is us." - Pogo Cartoon, Walt Kelly

73
Clayton
W5PFG

On Sun, Oct 23, 2011 at 3:33 PM, Kevin Deane  wrote:
>
> As much as I enjoy the banter, animosity and sometimes really brilliant 
> posts, I want to remind everyone that this is a HOBBY!
>
> Amateur Radio.
>
> Shut up and have fun, some of you take this WAY TO SERIOUSLY.
>
> Kevin
> KF7MYK
>
>
>
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[amsat-bb] Re: Did something change on AO-51??

[Clayton Coleman W5PFG]

Just to set the record straight, Frank/K4FEG broke it, not me.  I am
an innocent victim in this sinister plot.  I think he needs to be put
on double-secret-probation under the watchful eye of the other EM55
satellite operators.

If anything, I thought the power was increased after the telemetry.
After speaking with another on that pass who shared the same thought,
I emailed Drew to find out that the power is still set to just under a
watt.  I can't explain why I saw a signal strength "bump" after the
telemetry download, but I know what I saw.  Either way, that bird is
working great!

Kudos to the entire team keeping this satellite usable despite the
battery situation.

73,
Clayton
W5PFG

On Wed, Oct 19, 2011 at 12:09 PM, Mark L. Hammond
 wrote:
> Hi Jeff,
>
> I assure you, nobody broke it on Monday :)    I simply had it in
> telemetry mode in order to grab fresh telemetry (battery voltages,
> temperatures, etc.).   The bird never went down; I simply changed from
> voice, to digital, back to voice.
>
> No change in the power was made, it's still running just under 1 watt (980 
> mW).
>
> The crazy thing has been operating without a crash for what---10-12
> weeks now?   I've lost track, which is a GREAT thing!  It's a real
> surprise that the bird is running on only 4 out of the 6 original
> cells in the battery, all the way through eclipse at full smoke.
>
> It won't last forever...so enjoy it while it lasts!
>
> 73,
>
> Mark N8MH
> AO-51 Command Station
>
>
>
> On Wed, Oct 19, 2011 at 12:23 PM, Jeff Lamb  wrote:
>> Is it just me or has something happened to the power level on AO-51 
>> recently? Ever since Frank & Clayton (K4FEG & W5PFG) 'broke' it Monday 
>> evening on the 2130Z pass (just kidding guys), my receive audio has been 
>> 'scratchy' like I'm not getting enough signal into the receiver. Nothing has 
>> changed on my end and though I usually run mobile, I was sitting in a 
>> parking lot for that pass instead of driving down the road, I'm just curious 
>> if anything got changed during the reset.
>> AO-51 has been my favorite satellite since I got started doing them 2 1/2 
>> years ago and I cringe every time she 'goes down' knowing that we may never 
>> hear from her again.
>>
>> Jeff Lamb,
>> NX9B (EM66)
>>
>> Notice: This email message, including any attachments, contains
>> information belonging to Trinity Industries, Inc. and its business
>> units.  It has been sent solely for the use of the intended
>> recipients and may be confidential, proprietary, copyrighted, and
>> legally privileged.  If you are not an intended recipient, please
>> advise the sender of the error and permanently delete all copies of
>> this email, including any copies that may reside in your deleted
>> box.  The unauthorized review, use, disclosure, distribution, or
>> copying of this email or its contents is strictly prohibited.
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>
>
>
> --
> Mark L. Hammond [N8MH]
>
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[amsat-bb] Re: Oscarlocator

[Clayton Coleman W5PFG]

Seeing this kind of enthusiasm for "vintage" satellite gear might just
inspire some enterprising individual to produce some brand new "OSCAR
Locators."

On Thu, Oct 13, 2011 at 6:49 PM, Kevin Deane  wrote:
>
> Anyone want to get rid of one I'll send you a SASE!
>
> Kevin
> KF7MYK
>
>
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[amsat-bb] Re: Can you work DK1TB on a satellite ?

[Clayton Coleman W5PFG]

Hello Tom,

I personally use the Nova software for this task.  There is a menu
option to generate pass predictions for multiple observers using a
mutual satellite.  If I want to work Hawaii on AO-7, I can run a
prediction to show me any mutual passes between my Texas QTH and the
islands.  Nova has a lot of flexibility for generating different pass
predictions for multiple satellites, multiple observers, and even
checking visibility and eclipses.

In the scenario from your friend's inquiry, Nova would quickly tell me
the exact mutual window of opportunity to work a satellite pass with
the stations desired.  As you stated in your email, there are many
ways to obtain this kind of information but I find Nova is the easiest
(for me) out of my repertoire of software and website tools.

73,
Clayton
W5PFG


On Wed, Oct 12, 2011 at 10:06 AM, Thomas Doyle  wrote:
> A friend who knows a little about ham radio asked me me about satellites. He
> asked a couple simple questions.- Can you work Alaska on the satellite ?
> When I answered probably. He said great - lets try it. I explained a little
> about orbits and then he said. Ok - so if you know you can work Alaska how
> do you know when you should try. Alaska is not all that far from my QTH here
> in Packer Country so for my example I have changed the question to "Can you
> work DK1TB on a satellite and if so which satellite and when is it possible
> ?".
>
> We all know many ways to answer this simple question. Here is the easiest
> way I know. If you have an easier way please let me know.
>
> http://www.tomdoyle.org/canIworkDK1TB
>
> 73 W9KE tom ...
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[amsat-bb] Re: AO-51 pass at 22:06 UTC 2011-10-01

[Clayton Coleman W5PFG]

Mike,

You convinced me. Next week when I'm in EL29, I will run as much power
as I can to make sure you get that grid, being as it is so rare. Even
if other stations want to work me, I will bust through them with my
super-rover antenna array just so we can make contact.

Thanks for setting me straight!

/sarcasm off.

73
Clayton

On 10/2/11, Michael Schulz  wrote:
> Clayton,
>
> On Sun, 2011-10-02 at 08:56 -0500, Clayton Coleman W5PFG wrote:
>
>> If operators would not treat working a rare grid as if the world is
>> coming to an end immediately after the pass, I believe rover stations
>> would have a much more pleasant time handing out new grids.
>>
>> If you miss that desired grid today, doesn’t that leave opportunity
>> for you to work it on another day?
>
> You totally miss the point here. This is MY satellite and if I want to
> work YOU on that pass I will do WHATEVER it takes. I usually run 100W
> up to AO-51 anyways to make sure everybody hears ME! If that's not
> sufficient, ok .. let's bring the 1KW brick. No problem. The world is
> ending, we all know that already so I need to make sure that I get all
> the grids right now and here. The time YOU spent typing this email you
> could've already gotten in your friggin car and driven out to a new one
> for ME to work you. Clayton, Clayton .. we have to work on this slacker
> attitude of yours. Tsts ...
>
> Just my $23
>
> 73 Mike K5TRI
>
> p.s.: For the ironically challenged, this was irony. I don't run 1KW up
> to any satellite as everybody knows it's not enough.
>
> p.p.s.: Ups, I did it again :)
>
>

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[amsat-bb] Re: AO-51 pass at 22:06 UTC 2011-10-01

[Clayton Coleman W5PFG]

Since I am relatively “green” myself to FM satellite rover operation,
I will share an observation from a recent grid expedition in West
Texas.  I’ve observed a behavior that I refer to as “Armageddon grid.”
 This means the rover operator is activating a grid for the last time
before the world meets a fiery demise and doesn't know it until he
gives his call and grid square.

This is an overview of an Armageddon grid activation:

1.  Rover station calls one of his friends or scheduled contact.

2.  Up to five stations immediately call the rover station in rapid
procession, not allowing a millisecond between calls for anyone to
answer.  Never mind the opportunity of the rover’s original station
called establishing contact.

3.  At this point, the rover station tries to complete his original
call (if/when the dust settles.)

4.  Typically what occurs is step 2-3 wind up in a loop for a period of
2-3 minutes thus effectively reducing the usable time for other
stations to make contact on the pass by one-third or more.

If operators would not treat working a rare grid as if the world is
coming to an end immediately after the pass, I believe rover stations
would have a much more pleasant time handing out new grids.

If you miss that desired grid today, doesn’t that leave opportunity
for you to work it on another day?

73
Clayton
W5PFG


On Sat, Oct 1, 2011 at 5:25 PM, Omar Alvarez  wrote:
> What a shame this pass, just a few QSOs can be finished because all calling 
> others without give a chance the complete the current QSO.
> What we need to fix that?
>
>
> I will wait for a better pass.
>
> Have a nice weekend.
>
> Omar
> XE1AO
> DK89df
>
>
> 
> M.C. Omar Alvarez Cárdenas
> Facultad de Telematica, U de C
> 316 1075
> xe1...@ucol.mx
> omar...@hotmail.com
> 
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[amsat-bb] ARISSat and Elk or Arrow

[Clayton Coleman W5PFG]

I've been wondering if anyone besides me has tried to hear themselves
using an Arrow or Elk antenna via ARISSat's linear transponder.

If you have tried it and successfully heard yourself, please let me
know.  I'm curious as to what was your formula for success. The rig
I've been using is an FT-847 and for an antenna either my Elk or Arrow
mounted to a camera tripod.

I've made about six attempts now on passes that I thought were very
favorable to success.  I've had zero trouble receiving telemetry or
SSTV during these passes so I'm sure the bird was actually overhead
during my attempts.

I'm not ready to give up but time is running out.

73
Clayton
W5PFG
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[amsat-bb] DM84, DM85, DM86, DM96 activations = SUCCESS

[Clayton Coleman W5PFG]

It was a pleasure working some of you this week from the grids
mentioned in the subject line.  I also operated from DM83, EM14, and
EM15.

It is very apparent that DM83 is much more rare than any other grids I
have activated in the region.  Several hams had asked that I make a
trip specifically to put DM83 on the air.  It is not very far out of
my business route so activating it was no trouble.  I will be doing it
again and possibly before the end of this year.

If you need any of the following grids confirmed, we can setup a schedule:
EM02-07 EM11-14 EM21-26
DM82-85 DM92-96 EL28-29

It may take a few months before I travel to your desired grid but rest
assured I will go there and we can attempt contact.  Some grids I
visit fairly regularly.

I've already started to input contacts into my electronic log and
upload them to Logbook of the World.  If you sent me a QSL card and
SASE I will respond early this week.  If you did not send me a card
but would like me to send you one, please email me the details of our
contact.  If you do not see our contact confirmed in LotW by the end
of this upcoming week, please contact me.

For those whom I worked on the DM85/DM95 grid line, I will have a
special card related to the nearby attraction on Interstate 40 (7/10
mile east of the grid line.)  No SASE req'd.  I will be sending them
out in a week or two.

73
Clayton
W5PFG

On Tue, Sep 20, 2011 at 9:57 AM, Clayton Coleman W5PFG
 wrote:
> Over the next few days I will *attempt* to activate grids DM84, DM85,
> and possibly DM86/DM96 in the Texas Panhandle region using AO-27,
> AO-51, and potentially SO-50.  I've scouted a few places where I can
> operate these grids in relative proximity to where I will be working.
>
> 73
> Clayton
> W5PFG
>

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[amsat-bb] Re: UARS Keps Enclosed

[Clayton Coleman W5PFG]

Did anyone notice the UARS satellite is expected to come down the
first day of "Fall" in North America?   :-)


On 9/20/11, Bryan Herbert  wrote:
> These are current as of this morning and seem to be accurate when
> compared to the NASA mission status page.
>
> UARS
> 1 21701U 91063B   11263.18833764  .01299762  11120-4  56017-3 0  6054
> 2 21701  56.9440 281.4376 0013731  14.2607 345.8929 16.21836581108546
>
> Until last night the altitude of UARS varied between 130-140 miles. As I
> type this it is at 127 miles and appears to be gradually dropping. If you
> have Ham Radio Deluxe v.5 add the 'Visual' sats group and you will see UARS
> listed.
>
>
> --
> Bryan Herbert - KE6ZGP
> Newhall, CA. DM04RJ USA
> http://bryanherbert.com
> http://twitter.com/ke6zgp
>
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[amsat-bb] DM84, DM85, DM86, DM96 activations

[Clayton Coleman W5PFG]

Over the next few days I will *attempt* to activate grids DM84, DM85,
and possibly DM86/DM96 in the Texas Panhandle region using AO-27,
AO-51, and potentially SO-50.  I've scouted a few places where I can
operate these grids in relative proximity to where I will be working.

73
Clayton
W5PFG
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[amsat-bb] Re: Epic Failure at DN20

[Clayton Coleman W5PFG]

Kevin,

Fortunately our portable operations are for leisure and lives aren't
at stake when our communications fail.  Last night, I left on a
journey and as usual brought along some satellite gear.  My plan for
the week is to activate some grids south and west of Amarillo, TX
while making my business rounds.

Two hours down the road, I stopped to make my first pass.  Using my
usual setup, I was completely unable to hear a pass of SO-50 and then
AO-51.  Not being able to hear AO-51 spelled trouble since it was a
good pass of 30 degrees elevation.  Recognizing a problem was only the
first step.  When I arrived at my destination last night, I was able
to deduce the problem to a short patch cord between my downlink
antenna and diplexer.

I carry a minimal set of backup equipment. This allowed me to make
some contacts previously scheduled this morning on the 10:40 UTC pass
of AO-51.   I don't have a backup patch cord with me but I will
probably stop in Oklahoma City and source a substitute.

And now for the rest of the story... This is all for fun but a little
preparation and backup gear can make a world of difference when
"Murphy" strikes!  I learned something else to add to my backup
supplies for the next trip.

73
Clayton
W5PFG

On Sun, Sep 18, 2011 at 1:17 PM, Kevin Deane  wrote:
>
> So just for gossip sakeLong story short the 6 Meter beam with the G5RV 
> Jr. came crashing down on top of the satellite array of all places. So that 
> takes out my chances for any Magic Band contacts this trip, the 2-Meter beam 
> is functional, so I might try and fix the stand for that and try some SSB 
> Birds. The 70cm beam came out unscathed so I still have ears, I have been 
> goin in with a magmount so thats all good.
>
> The more than one grid thing seems like a real pain so I am just pullin over 
> off the road like I did this morning. Honestly in my opinion you can only be 
> in one place at time anyway!
>
> Looks like we'll be here for a couple more days at Jim's property, DN21 is 
> right up the road and we'll hit the others on the way back. Anyway most 
> everyone should get some grids if they need'em!
>
> No matter where you go there you are!  :)
>
> Kevin
> KF7MYK
>
>
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[amsat-bb] Re: Which Mobile Mag Mount?

[Clayton Coleman W5PFG]

Ted,

Regarding antenna orientation for handhelds, see the picture
associated with item #6 at this web page:
http://www.amsat.org/amsat-new/echo/EchoHT.php

Check this video out, too, for inspiration:
http://www.youtube.com/watch?v=FCFWrXzdgeM

When using an HT whip, the trick I use is to avoid any sudden movement
or adjustment of the antenna once you have a decent copy of the
downlink.  Even then, it can be challenging as you will need to track
the bird.  I own some of the commonly recommended antennas such as the
Pryme AL800.   I don't own the Diamond you referenced but I have a
similar Comet SMA24 that is useable, albeit not ideal, for AO-51.  My
experience has been that the "cat whisker" style whips tend to have
too much movement.  I might try to make a video to demonstrate this
effect.

Even with a stock rubber dummy load, I can hear many passes of AO-51
and some overhead AO-27 passes.

K6LCS' web page has some good recommendations:
http://web.me.com/clintbradford/Work-Sat/Antennas.html

I recommend the AL800 and similar.  I personally am most pleased with
cost and function of the Smiley 270A, which at $22 is a real bargain.
After some passes with this antenna used, I have listened to the
recording and been unable to distinguish my HT performance from that
of a full-bore home satellite station.  Again, there are limitations
but it is a lot of fun to try!

73
Clayton
W5PFG




On Thu, Sep 15, 2011 at 6:40 PM, Ted  wrote:
> Bob, thanks for the great data.
>
> Question: do you think your data/techniques have any application to using a
> dual band HT with a long whip (e.g. Diamond SRH77CA - 15.5"long)
>
> In other words would you be better off just holding the HT vertical and
> fairly stationary during the pass (adjusting Doppler of course) or moving
> the darn thing all over until you capture the bird. I realize it is not
> duplex, etc. but it does seem to work on a strong pass. I just can't figure
> out the best way to hold the radio
>
> Thanks for any help
>
> 73, Ted, K7TRK
>
> -Original Message-
> From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
> Behalf Of Bob Bruninga
> Sent: Thursday, September 15, 2011 8:52 AM
> To: 'AMSAT BB'
> Subject: [amsat-bb] Re: Which Mobile Mag Mount?
>
> Everyone's comments are correct and valid within their context.  But the
> original question was optimizing for the casual mobile operator in motion.
> So here are some additional considerations...
>
>> Second, any "vertical" antenna...will have a [null overhead]
>> So, think about it: A GREAT pass of 90 degrees goes overhead
>> your vertical is valueless during the middle of that great pass.
>
> True, but when we put some actual numbers on that, the loss is quite
> insignificant.  Using AO51, only one pass every 5 days goes above 82
> degrees, and the total duration above 82 degrees is 24 seconds, out of all
> in view times.  So we agree, the antenna is valueless, but for under 1% of
> the time.  The tradeoff is that it is 3 dB better most of the rest of the
> time...
>
> The measured elevation profile of a 3/4 wave vertical (a 19.5" whip on the
> 435 downlink) is shown 80% down the page http://aprs.org/astars.html.  The
> overhead null is only 10 dB down at 82 degrees... BUT the satellite is 10 dB
> closer at that point, so you still hear it almost the same as when it came
> above 25 degrees.  So you get full sky coverage above 25 degrees > 99% of
> the time with the vertical.
>
>> Ideally - in a car - ... stopping and parking and getting a
>> vertical perpendicular to the orbit of the satellite would
>> give best results.
>> Then maybe a Larsen mag mount... And bend - er, I mean,
>> "re-form" that whip right at the base so that it is about
>> 20" bent.  you'll be more successful with the FM birds!
>
> Yes, good idea, but now there is some directionality and so the car needs to
> remain pointed towards the satellite during the pass.  Otherwise there is
> still the null, it is just in a different part of the sky.
>
>> 1. If the satellite is circular polarization the 19.5 " whip looses 3 dB
> of gain.
>
> Yes, but most people have observed a polarization shift during overhead
> passes.  And in that case, the loss of a circularized antenna is much worse
> than 3 dB... usually a complete fade.  SO I agree, a circular antenna gets 3
> dB better half the time, and much worse the other half the time.  I prefer
> the simplicity of the whip that does not give up more than 3dB no matter
> what the polarization is.  Mounting a quadrifilar on the roof of the mobile
> is also problematic.
>
>> 2. The common Quadrifilar Antenna is 1/2 wave 1/2 turn.
>> The 1 wavelength, 1 turn Quadrifilar Antenna has its
>> highest gain near or at the horizon depending on the
>> length to diameter ratio.
>
> But it is still only a 3 dB gain antenna out there, and so it is not going
> to hear the satellite down on the  horizon anyway because the satellite is
> 10 dB farther away and usually blocked for the mobile.  So h

[amsat-bb] Re: Good mobile antennas to use

[Clayton Coleman W5PFG]

My recommendation is to use separate antennas for the uplink and
downlink.   You might not be satisfied using a standard whip antenna
for the downlink.  There are too many nulls.  It is obvious to many
satellite users when someone is running this configuration.  Why?
Because typically the person doing this does not realize they are
losing the bird for periods of time during the pass.  I've seen this
more and more lately.  It is demonstrated when a user comes on, says
"mobile" but they cannot hear anyone coming back to them.  I'm not
saying it cannot be done (many do it successfully,) but there will be
a lot of passes you cannot work because you can't hear.  On busy
passes of AO-51 and AO-27, not using something better to receive the
downlink will give you a real handicap.

This is why I use a separate downlink antenna, typically a 3-element
folded beam such as K5OE's design or the Arrow 3-element.  Sometimes I
will use a full 7-element Arrow for the receive if the pass is low
angle or the terrain is unforgiving.   The downside to sticking a
small yagi out the window is you cannot be in motion.  I just orient
my car in a safe place with my driver's side facing the east or west,
depending on the pass.

If you do want to be in motion, you should look at using a small UHF
eggbeater-type antennas or a similar design to the http://Antennas.us
quadrifilar helix.  Even those may not be perfect but will work far
better than cheating with a whip antenna.  I personally have listened
to many passes on the Antennas.us model but feel that if I want to
reliably make contacts, I will do that from a fixed position in the
car.

73,

Clayton
W5PFG

On Wed, Sep 14, 2011 at 5:28 PM, John Geiger  wrote:
>
> I am looking to get on the FM satellites while mobile and activate some
> different grids.  Can anyone recommend a good mag mount dual band antenna to
> use for satellite work?  Does the MFJ 1/4 wave mag mount antenna do pretty
> good on the sats?  I am guessing a 1/4 wave will cover more of the pass than
> a 5/8 wave would.
>
> 73s John AA5JG
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[amsat-bb] Southwest Texas Grids - August 22/23 SUCCESS!

[Clayton Coleman W5PFG]

I want to thank all who supported my efforts to activate DL98/DL99 on the
Texas/Mexico border.  I also made quite a few contacts from EL07 in Laredo,
Texas.  Despite two border patrol inspection stations and three border
patrol "drive-by's" while I was operating, the boundary operation went
smoothly.   APRS coverage was fairly poor for most of the trip unless I was
in between major metropolitan areas in the Interstate 35 corridor.

My SO-50 operations weren't as smooth as on AO-27 and AO-51 because they
were unplanned and I was working them from whatever place I was on the road
at AOS.  Sometimes it was *not* a great location.

Overall I ended up making 102 contacts from grids EM00, EM01, EM02, EL07,
EL08, EL09, DL98, and DL99.  I've already uploaded these contacts to Logbook
of the World.  If you would like a paper card, please email me the QSO
details or go the usual direct/SASE route.

73,
Clayton
W5PFG
EM21
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[amsat-bb] Southwest Texas Grids - August 22/23

[Clayton Coleman W5PFG]

August 22
I will be in transit and likely to activate EL09, EL08, and possibly EL07.

August 23
In the afternoon I am planning to work from DL98/DL99.  I cannot be more
specific as to which passes because this trip's primary focus is business.
I'm expecting to be on passes after 15:00 CDT.

As always I will be glad to QSL via post or LotW.

73
Clayton
W5PFG
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