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CX2SA > SATDIG 18.03.10 21:07l 606 Lines 19028 Bytes #999 (0) @ WW
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Sent: 100318/1905Z @:CX2SA.LAV.URY.SA #:46745 [Minas] FBB7.00e $:AMSATBB5127
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Sat Presentation in Illinois (Dee)
2. Re: Sat Presentation in Illinois (Clint Bradford)
3. Re: Sat Presentation in Illinois
(Patrick STODDARD (WD9EWK/VA7EWK))
4. FS: LMR 400 coax run with connectors (John Geiger)
5. Devices in Icom preamps AG-25 AG-35 (Mark L. Hammond)
6. Re: Sat Presentation in Illinois (Dee)
7. Locating a Grid Line (claryco@xxx.xxxx
8. Re: Devices in Icom preamps AG-25 AG-35 (George Henry)
9. Re: Devices in Icom preamps AG-25 AG-35 (George Henry)
10. Re: Devices in Icom preamps AG-25 AG-35 (George Henry)
11. AO-51 close approach (Mike Rupprecht)
12. Re: Devices in Icom preamps AG-25 AG-35 (Mark L. Hammond)
13. Re: Devices in Icom preamps AG-25 AG-35 (George Henry)
----------------------------------------------------------------------
Message: 1
Date: Wed, 17 Mar 2010 16:14:28 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Sat Presentation in Illinois
To: "'Clint Bradford'" <clintbradford@xxx.xxx>
Cc: Amsat BB <amsat-bb@xxxxx.xxx>
Message-ID: <E6DEF250D7274F7E89A49E220EC2EC5C@xxxxxxxx>
Content-Type: text/plain; charset=us-ascii
Good job on your remote demo, Clint.
73,
Dee, NB2F
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Clint Bradford
Sent: Tuesday, March 16, 2010 11:24 PM
To: AMSAT BB
Subject: [amsat-bb] Sat Presentation in Illinois
I just finished giving my "How to Work Amateur Satellites with Low Power"
presentation to a classroom in Southern Illinois.
Club president Gregg Sperling, KB9E, contacted me a few weeks ago, asking if
I could speak at the March meeting of his Southern Illinois University
Amateur Radio Club in Carbondale, IL.
NO - I didn't use up my wife's frequent flyer miles. We did it via Skype.
Audio AND video.
I prepared a .pdf file ahead of time, tailored to the club (I always have a
couple club-related trivia questions ... and always have the club's grid
square id'd in the program) - and emailed it ahead of time to the tech guy.
All slides were numbered, so we could stay in sync. The club used a
computer/projector to show the slideshow, and I was able to see and hear
the classroom attendees - and they could see and hear me - via Skype.
Skype is almost "full duplex," so I could hear comments and questions ...
and I could see when a hand raised up for a question. It really worked out
well!
So, presenters: I guess we are no longer limited to "hundred mile radii"
restrictions for our shows! It wasn't as effective as actually going to a
site, demo'ing a FM bird, THEN presenting. But it sure got the word out to a
club that I couldn't physically get to!
We had a great time!
Clint Bradford, K6LCS
909-241-7666
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Wed, 17 Mar 2010 13:45:34 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] Re: Sat Presentation in Illinois
To: Dee <morsesat@xxxxxxxxx.xxx>
Cc: Amsat BB <amsat-bb@xxxxx.xxx>
Message-ID: <4D51B182-EA42-47BC-A425-62BA42482FE8@xxx.xxx>
Content-Type: text/plain; charset=us-ascii
Thank you, Dee - I'm doing it again tonight for the Starke County (Indiana)
Amateur Radio Club.
No loading up of the car ... no leaving early and driving to avoid afternoon
traffic ... no unloading and setting up of a/v system ... no teardown and
returning home at about 11pm ...
I can get used to this "remote" presentation mode!
I also used Go To My Meeting for a couple of "How to Program Your Yaesu
FT-60R" presentations. No, I am not necessarily getting lazy in my old age
... but just enjoying the technology we all have access to.
Clint
------------------------------
Message: 3
Date: Wed, 17 Mar 2010 14:00:32 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Re: Sat Presentation in Illinois
To: amsat-bb@xxxxx.xxx
Message-ID:
<2e18ad3e1003171400g54321699u19939ab3cbb46fd3@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Clint!
> I just finished giving my "How to Work Amateur Satellites with Low Power"
> presentation to a classroom in Southern Illinois.
>
><snip>
Great job, especially using Skype for a two-way video hookup. You're a
bit ahead of me in doing that, but that is something I have thought about
with some presentations for groups in Mexico. Skype would work great
for that, if I am not able to be there myself.
I had a question about one item you mentioned at the end of your message:
> So, presenters: I guess we are no longer limited to "hundred mile radii"
> restrictions for our shows!
What is this limit that you speak of? ;-) I, and my truck, have never heard
anything about that. For me here in Phoenix, anything I've been to outside
the Phoenix metropolitan area has involved a drive of at least 100 miles
one-way. One presentation I gave last year was a 250-mile (400km) drive,
across a state line and an international boundary (not too far past that
boundary, in Mexicali - across from Calexico and El Centro CA). I enjoy
doing that, and many times combine the drive to a hamfest with additional
travel for some sightseeing and/or radio operating away from home.
I hope it is really not a restriction, but a guideline to help AMSAT's Area
Coordinators to not go overboard on their travels to different events. I
routinely drive one-way distances of 100 to 200 miles (160-320km) for other
events in Arizona, and along with other driving for sightseeing and/or radio
operating add many more miles/km to that. I plan to continue doing this,
starting with a hamfest on 27 March in Tucson (120 miles/200km southeast
of me). If I didn't enjoy this, I would not do it.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 4
Date: Wed, 17 Mar 2010 15:12:58 -0700 (PDT)
From: John Geiger <aa5jg@xxxxx.xxx>
Subject: [amsat-bb] FS: LMR 400 coax run with connectors
To: vhf@xxxx.xxxxxxxx.xxxx amsat-bb@xxxxx.xxxx
forsale-swap@xxxxxxx.xxx.xxxxxxxxxxxxxxxxxx@xxxxxxxxxx.xxxx
oktraders@xxxxxxxxxxx.xxx
Message-ID: <983202.83873.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I have for sale a brand new 75 foot run of Times Microwave LMR-LW400 low
loss coax cable with N connectors installed. LMR-LW400 is Flexible Low Loss
Communications Coax. The LW series uses a copper clad aluminum shield for a
30% weight savingsover standard LMR (which is already lighter than many
similar coax).
You can read more about it at
http://www.yachtwire.com/webstore/index.html?190.html&1
It sells for $1.60 a foot, I will sell this coax run for $85 shipped in the
US, and can take paypal/check/MO.
73s John AA5JG
------------------------------
Message: 5
Date: Wed, 17 Mar 2010 18:29:38 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Devices in Icom preamps AG-25 AG-35
To: amsat-bb@xxxxx.xxx
Message-ID: <uNVR1d0062QjNpn05NVRjE@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hello all,
We either had two bad preamps to begin with, or they became casualties
during transport to K4T, but regardless--the Icom preamps we took appear to
have bad GAsFET devices in them.
Can anybody tell me what is the device in each unit (AG-25 and AG-35)? And
are they something a skilled ham can reasonably replace?
Specific suggestions for a parts source will be appreciated, too.
73,
Mark L. Hammond [N8MH]
------------------------------
Message: 6
Date: Wed, 17 Mar 2010 19:28:23 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Sat Presentation in Illinois
To: "'Clint Bradford'" <clintbradford@xxx.xxx>
Cc: 'Amsat BB' <amsat-bb@xxxxx.xxx>
Message-ID: <A42A761769E04632A5D3463D3345FBE0@xxxxxxxx>
Content-Type: text/plain; charset=us-ascii
Clint,
The only thing you leave behind is personal contact with people.
Dee
-----Original Message-----
From: Clint Bradford [mailto:clintbradford@xxx.xxxx
Sent: Wednesday, March 17, 2010 4:46 PM
To: Dee
Cc: Amsat BB
Subject: Re: [amsat-bb] Sat Presentation in Illinois
Thank you, Dee - I'm doing it again tonight for the Starke County (Indiana)
Amateur Radio Club.
No loading up of the car ... no leaving early and driving to avoid afternoon
traffic ... no unloading and setting up of a/v system ... no teardown and
returning home at about 11pm ...
I can get used to this "remote" presentation mode!
I also used Go To My Meeting for a couple of "How to Program Your Yaesu
FT-60R" presentations. No, I am not necessarily getting lazy in my old age
... but just enjoying the technology we all have access to.
Clint
------------------------------
Message: 7
Date: Wed, 17 Mar 2010 22:56:15 -0400
From: claryco@xxx.xxx
Subject: [amsat-bb] Locating a Grid Line
To: amsat-bb@xxxxx.xxx
Message-ID: <8CC945DB5AD814D-2E3C-763B@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Tks Norbert. It was definitely a lot of fun for both of us.
To answer your question and even go a bit farther, every grid line and
particularly the four-grid point in KS I operated from was measured using a
Garmin 60CSX GPS.
The VUCC rules indicate that an GPS receiver shows an accuracy of 20 feet or
better is required for operating from a grid line or point. Each critical
operating position during this trip was identified to this standard.
Numerous photos were taken from various angles at every location so that
additional identifying references were included. The GPS' display was
photographed at close range as well. In most cases, the photos of the set up
show the GPS placed directly in front of the rig sitting on the car's hood.
(That said, several of the grid line operations were alongside roads with
nothing but non-descript crop fields and asphalt as backgrounds, but the pix
were taken anyway.)
By the way, as I held the GPS at a grid line and directed my XYL, Cori, at
the wheel, she'd move the car back and forth until the car's hood was
exactly on the line. She found out just how tricky (and annoying!) it can be
when the GPS would appear to have stabilized on the line, only for one of us
to grab the camera and find that the last digits had changed to .999 or
.001. That's only an error of about five feet, but it wasn't good enough, so
she'd have to move the car again!
73,
Jim, ND9M / VQ9JC
Message: 16
Date: Wed, 17 Mar 2010 14:06:31 +0000
From: Richard Cubero <taramindo@xxxxxxx.xxx>
Subject: [amsat-bb] Re: ND9M Road Trip
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BAY141-W15096C0722A8915CDC5FC1A82C0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
To: Jim ND9M
Thanks for a great article, I see you had a lot of fun on your road trip.
Quick question, what tool were you using to find the grid lines ?
73s
Norbert
KP4WK
Tampa FL EL 87
------------------------------
Message: 8
Date: Wed, 17 Mar 2010 22:54:41 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: Devices in Icom preamps AG-25 AG-35
To: <amsat-bb@xxxxx.xxx>, "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Message-ID: <7BEDDF75352A4B30BCB66DE36189E95D@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
For the AG-35, it's a 2SK121Y. Not sure about the AG-25.
As others have mentioned, because of the proximity of the relay, one of the
easiest ways to replace it is to cut the leads on the old device, then bend
& trim the leads on the new device to "straddle" the old leads & solder
away. Way easier than removing the relay...
George, KA3HSW
----- Original Message -----
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Wednesday, March 17, 2010 5:29 PM
Subject: [amsat-bb] Devices in Icom preamps AG-25 AG-35
> Hello all,
>
> We either had two bad preamps to begin with, or they became casualties
> during transport to K4T, but regardless--the Icom preamps we took appear
> to have bad GAsFET devices in them.
>
> Can anybody tell me what is the device in each unit (AG-25 and AG-35)?
> And are they something a skilled ham can reasonably replace?
>
> Specific suggestions for a parts source will be appreciated, too.
>
> 73,
>
> Mark L. Hammond [N8MH]
------------------------------
Message: 9
Date: Wed, 17 Mar 2010 23:02:35 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: Devices in Icom preamps AG-25 AG-35
To: <amsat-bb@xxxxx.xxx>, "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Message-ID: <1FCB4548896C4099BED1D2282F3A7EE4@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Correction: 3SK121Y, not 2SK...
Sorry....
George,KA3HSW
----- Original Message -----
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Wednesday, March 17, 2010 5:29 PM
Subject: [amsat-bb] Devices in Icom preamps AG-25 AG-35
> Hello all,
>
> We either had two bad preamps to begin with, or they became casualties
> during transport to K4T, but regardless--the Icom preamps we took appear
> to have bad GAsFET devices in them.
>
> Can anybody tell me what is the device in each unit (AG-25 and AG-35)?
> And are they something a skilled ham can reasonably replace?
>
> Specific suggestions for a parts source will be appreciated, too.
>
> 73,
>
> Mark L. Hammond [N8MH]
>
------------------------------
Message: 10
Date: Wed, 17 Mar 2010 23:20:38 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: Devices in Icom preamps AG-25 AG-35
To: <amsat-bb@xxxxx.xxx>, "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Message-ID: <CAB89293AC074BCBA49F49D86F65A958@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I should have offered this first: before suspecting the preamps, did you
enable preamp control for each band in the 910's "SET" menu? Preamp control
must be enabled before the front panel P.AMP button will switch power to the
preamp. Also, there must not be anything inline such as an SWR meter,
filter, or anything else that might block DC on the coax.
If you hook the preamp up to the rig with a short jumper cable, you should
head a noticeable relay click from the preamp when you press & hold the
P.AMP button.
George, KA3HSW
----- Original Message -----
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Wednesday, March 17, 2010 5:29 PM
Subject: [amsat-bb] Devices in Icom preamps AG-25 AG-35
> Hello all,
>
> We either had two bad preamps to begin with, or they became casualties
> during transport to K4T, but regardless--the Icom preamps we took appear
> to have bad GAsFET devices in them.
>
[snip]
------------------------------
Message: 11
Date: Thu, 18 Mar 2010 07:56:58 +0100 (MET)
From: "Mike Rupprecht" <mail@xxxxxxxxxxxxxx.xx>
Subject: [amsat-bb] AO-51 close approach
To: amsat-bb@xxxxx.xxx
Message-ID: <201003180656.o2I6uwQG005357@xxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset="ISO-8859-1"
CelesTrak SOCRATES, predicts the following Orbital Conjunction Threats
Data current as of 2010 Mar 18 01:00 UTCDate Time SAT 1
SAT 2 Minimum Range
Probability-------------------------------------------------------------------
-------------------------------------------2010 Mar 18 15:13 UTC ECHO
(AO-51) - FENGYUN 1C DEB 54 m +/- 36 m
5.335E-0473, MikeDK3WN
------------------------------
Message: 12
Date: Thu, 18 Mar 2010 06:44:13 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: Devices in Icom preamps AG-25 AG-35
To: George Henry <ka3hsw@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<5d8cecfe1003180344o4d8e84e9hc7c548cbc97dbb88@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi George,
Thanks for the tips. We had a measured 12V at the connector attaching
to the preamps and the menus were correct, so every thing indicates
something was amiss on the preamp-hardware side.
I hope my colleague can get his preamps in working order.
Does anybody have the device information for the AG-25 units?
Thanks!
Mark N8MH
On Thu, Mar 18, 2010 at 12:20 AM, George Henry <ka3hsw@xxx.xxx> wrote:
> I should have offered this first: ?before suspecting the preamps, did you
> enable preamp control for each band in the 910's "SET" menu? ?Preamp control
> must be enabled before the front panel P.AMP button will switch power to the
> preamp. ?Also, there must not be anything inline such as an SWR meter,
> filter, or anything else that might block DC on the coax.
>
> If you hook the preamp up to the rig with a short jumper cable, you should
> head a noticeable relay click from the preamp when you press & hold the
> P.AMP button.
>
> George, KA3HSW
>
>
> ----- Original Message ----- From: "Mark L. Hammond"
> <marklhammond@xxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Sent: Wednesday, March 17, 2010 5:29 PM
> Subject: [amsat-bb] Devices in Icom preamps AG-25 AG-35
>
>
>> Hello all,
>>
>> We either had two bad preamps to begin with, or they became casualties
>> during transport to K4T, but regardless--the Icom preamps we took appear to
>> have bad GAsFET devices in them.
>>
> [snip]
>
--
Mark L. Hammond [N8MH]
------------------------------
Message: 13
Date: Thu, 18 Mar 2010 10:38:55 -0700 (PDT)
From: George Henry <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: Devices in Icom preamps AG-25 AG-35
To: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <553246.74680.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Going back in the archives, I found a message that said the AG-25 also uses
the 3SK121Y.? Thru Google, I also found a site which talked about replacing
the device with a 3SK183?
https://www.stu2.net/wiki/index.php?title=Satellites&printable=yes.
George, KA3HSW
----- Original Message ----
> From: Mark L. Hammond <marklhammond@xxxxx.xxx>
> To: George Henry <ka3hsw@xxx.xxx>
> Cc: amsat-bb@xxxxx.xxx
> Sent: Thu, March 18, 2010 5:44:13 AM
> Subject: Re: [amsat-bb] Devices in Icom preamps AG-25 AG-35
>
> Hi George,
Thanks for the tips. We had a measured 12V at the connector
> attaching
to the preamps and the menus were correct, so every thing
> indicates
something was amiss on the preamp-hardware side.
I hope my
> colleague can get his preamps in working order.
Does anybody have the
> device information for the AG-25 units?
Thanks!
Mark
> N8MH
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 5, Issue 127
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