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CX2SA > SATDIG 18.04.11 16:17l 1083 Lines 38975 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: VK/WD9EWK in late May 2011 (Patrick STODDARD (WD9EWK/VA7EWK))
2. Re: ARISSat-1 - Battery Failure (R Oler)
3. Heil Traveler and a Recorder (Allen Kenny)
4. Re: ARISSAT-1 >> Why not launch it now? (Burns Fisher)
5. Re: ARISSAT-1 >> Why not launch it now? (Alan P. Biddle)
6. Question, & some comments! (Stuart Balanger)
7. Re: Question, & some comments! (Mark L. Hammond)
8. Re: AMSAT-BB Digest, Vol 6, Issue 221 (Louis McFadin)
9. Re: ground plane on (Art McBride)
10. XE3DX on EK19 Today (David Maciel)
11. Re: ground plane on (Greg D.)
12. Re: ground plane on (Edward R. Cole)
13. Re: RF Quiet my digital recorder (Bill W1PA)
----------------------------------------------------------------------
Message: 1
Date: Sun, 17 Apr 2011 12:07:22 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Re: VK/WD9EWK in late May 2011
To: amsat-bb@xxxxx.xxx
Message-ID: <BANLkTik9XUzLPHsoknrS2RPx3o=K1ttawA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi!
I had posted a private reply to Alex regarding his comment:
> Actually ?VK is the suffix so the call will be WD9EWK/VK
before I realized the comment was posted to the -BB.
***
This was the case originally, when the ACMA (Australian
Communications and Media Authority - the "FCC" there)
originally issued that "class licence" that allows foreign hams
the opportunity to operate without first applying for a temporary
Australian license back in 2008. In December 2010, at the
request of the Wireless Institute of Australia, the ACMA
modified that so the callsign used by foreign hams follows
the CEPT T/R 61-01 method (indicator before home call).
The WIA mentioned this in a news release around Christmas:
http://www.wia.org.au/newsevents/news/2010/20101222-1/index.php
The text of the Australian class licence is available at:
http://www.comlaw.gov.au/Details/F2010C00893
The ACMA has more information for foreign hams visiting
Australia, including tables that show which licenses have
different levels of privileges as listed in the class licence,
at:
http://www.acma.gov.au/WEB/STANDARD/pc=PC_1311
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 2
Date: Sun, 17 Apr 2011 11:29:25 -0500
From: R Oler <orbitjet@xxxxxxx.xxx>
Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
To: <am25544@xxxxxx.xxx>, Amsat BB <amsat-bb@xxxxx.xxx>
Message-ID: <COL106-W2444BBAE205F8D08E9A328D6AE0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
"
If that cannot be done then the option is to launch ARISSat as is and let it
run off the
solar panels."
pleased to be wrong here but I dont think that is an option. I "THINK" (and
you know that really could be wrong) that the battery is essential for the
15 minute "silent" period on launch Robert WB5MZO
> From: am25544@xxxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Date: Sun, 17 Apr 2011 02:47:09 -0400
> Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
>
> On 16 Apr 2011 10:47:57, John P. Toscano, W0JT wrote:
>
> >Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
>
> >One small consolation is that if the ISS crew can't get it working before
> >tossing it into space, it could (possibly) be brought back to Earth on a
> >future return trip to be diagnosed and repaired on the ground.
>
> >But let's hope it is something simple to fix up on the ISS and that someone
> >on the crew can take a little time to fix it.
>
> >But I also understand that none of those 3 scenarios are guaranteed (easy
> >to fix, time to fix it, or return it to Earth).
>
> >John P. Toscano, W0JT
>
>
>
> I can think of a somewhat darker scenario...
>
> On April 14, 2011, Clint K6LCS posted:
>
>
> >Message-ID: <B4798E98-0A8B-4B39-918C-F8EC70FFEE4D@xxx.xxx>
> >Content-Type: text/plain; CHARSET=US-ASCII
>
> >RadioSkaf's Alexander, RA3WOK, just wrote me that they do, indeed,
suspect battery failure of the ARISSat-1.
> >Investigation and plans for deployment continue.
>
> >"According to preliminary information the problem is a failure of the
battery ... "
>
> >"In the near future, batteries will be on Earth. It cannot be kept on the
ISS."
>
> >"The situation will improve in June and July, when scheduled launching of
ARISSat-1."
>
>
>
> If the batteries cannot be kept on the ISS, there are three opportunities
to return them
> (intact) to earth before the Russian EVA #29 now scheduled for July 27,
2011:
> -On STS-134 returning to earth May 12(?), 2011
> -On Soyuz TMA-20 returning to earth May 16, 2011
> -On STS-135 returning to earth July 12, 2011
>
> Someone will have to remove the battery from ARISSat, and place it on one
these vehicles...
> assuming the time and down mass capacity to this can be found. Replacing
the battery
> with another becomes the next issue. Is there a spare on board?
>
> If that cannot be done then the option is to launch ARISSat as is and let
it run off the
> solar panels.
>
> If the desire is to get the battery off the ISS as quickly as possible,
then it goes on
> the Progress M-09M, which is to be de-orbited April 26, 2011. If time
cannot be found
> to remove the battery from ARISSat, then the simplest thing to do is to
put ARISSat,
> battery and all, on the Progress and de-orbit it.
>
> Of course, we could all be surprised and it could be deployed by the
STS-134 crew,
> but they are going to be plenty busy as it is.
>
> This is just idle speculation on my part... It's a gloomy rain day in
Michigan. :-)
>
> 73 Armando, N8IGJ
>
>
>
>
> _______________________________________________
> 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: 3
Date: Sun, 17 Apr 2011 10:56:25 -0400
From: "Allen Kenny" <allenkenny@xxxxxxx.xxx>
Subject: [amsat-bb] Heil Traveler and a Recorder
To: "AMSAT BB list" <amsat-bb@xxxxx.xxx>
Message-ID: <B3A23033387045C3BA5682B750CF0F29@xxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
I wrote an article for the AMSAT Journal back in 2005 that showed my
solution. It consists of a box placed between the headset and the adapter.
I connected two 3.5 mm jacks into the speaker circuit. One jack gets
connected to the input of the recorder. The second jack is available for
use by any observers.
73,
Allen
KK4AK
------------------------------
Message: 4
Date: Sun, 17 Apr 2011 14:33:41 -0400
From: Burns Fisher <burns@xxxxxx.xx>
Subject: [amsat-bb] Re: ARISSAT-1 >> Why not launch it now?
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <BANLkTikEB3=aosR-q2By-BF9kfU=+LigOQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
According to the ARISSAT-1 critical design review, the battery is
mission-critical for the first 15 minutes. I assume it has to run the
15-minute timer that delays that start of operation until the bird is some
distance from the 'nauts. Based on that info, I would guess it is not
viable to launch ARISSAT-1 with a non-operational battery.
Do they have a spare? Depends what you mean. Since it is the same battery
that powers the Russian space suits, there are likely some on board. Is
that a suit batter that could be used in the satellite? That's a different
question. Important as it is to us, I imagine that ARISSAT-1 is not all
that important to the ISS partners.
So now I have a question for Tony or others in on the technical details:
How was the 70cm transmission from this Yuri's day test supposed to work?
Is there an audio output from the ARISSAT-1 to plug into the station's
xmitter? Or was the station planning to pick up the 2m transmission and
re-broadcast on 70cm? (I'm guessing the latter, which implies that there was
probably not even a very weak 2m signal that the ISS receiver right next
door could pick up.)
Burns, W2BFJ
On Sat, Apr 16, 2011 at 10:45 PM, Dave Taylor <dave.w8aas@xxxxxxx.xxx>wrote:
> Because it is not NASA's satellite. It is up to the Russians to
> deploy, and their next scheduled EVA is in July.
>
> -- Dave, W8AAS
>
>
> On Apr 16, 2011, at 12:27 PM, AB9RN wrote:
>
> > Curious why NASA is delaying such a long time to hand launch the
> > satellite
> > until July? I would think they would want to get it out of there and
> > de-clutter the ISS. Given that it appears to be dead without a solar
> > panel
> > functioning, it seems like an obvious idea to me. Is there some
> > reason why
> > they can't schedule this sooner?
> > _______________________________________________
> > 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
>
> _______________________________________________
> 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: 5
Date: Sun, 17 Apr 2011 16:09:27 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: ARISSAT-1 >> Why not launch it now?
To: "'Burns Fisher'" <burns@xxxxxx.xx>, "'AMSAT BB'"
<amsat-bb@xxxxx.xxx>
Message-ID: <0FBAEC8ABAF6400FA11F8DF623979219@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Burns,
The TM-D700 used the cross band repeater function to listen to the ARISSat 2
meter FM voice, and then rebroadcast it on 70 cm. It was reported to have
been used to check the first short test. I do stuff like that in the home
shack, even using dummy loads, but then I don't live in a metal can. ;) I
do not know exactly how this was lashed up to give a definitive answer.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Burns Fisher
Sent: Sunday, April 17, 2011 1:34 PM
To: AMSAT BB
Subject: [amsat-bb] Re: ARISSAT-1 >> Why not launch it now?
According to the ARISSAT-1 critical design review, the battery is
mission-critical for the first 15 minutes. I assume it has to run the
15-minute timer that delays that start of operation until the bird is some
distance from the 'nauts. Based on that info, I would guess it is not
viable to launch ARISSAT-1 with a non-operational battery.
Do they have a spare? Depends what you mean. Since it is the same battery
that powers the Russian space suits, there are likely some on board. Is
that a suit batter that could be used in the satellite? That's a different
question. Important as it is to us, I imagine that ARISSAT-1 is not all
that important to the ISS partners.
So now I have a question for Tony or others in on the technical details:
How was the 70cm transmission from this Yuri's day test supposed to work?
Is there an audio output from the ARISSAT-1 to plug into the station's
xmitter? Or was the station planning to pick up the 2m transmission and
re-broadcast on 70cm? (I'm guessing the latter, which implies that there was
probably not even a very weak 2m signal that the ISS receiver right next
door could pick up.)
Burns, W2BFJ
On Sat, Apr 16, 2011 at 10:45 PM, Dave Taylor <dave.w8aas@xxxxxxx.xxx>wrote:
> Because it is not NASA's satellite. It is up to the Russians to
> deploy, and their next scheduled EVA is in July.
>
> -- Dave, W8AAS
>
>
> On Apr 16, 2011, at 12:27 PM, AB9RN wrote:
>
> > Curious why NASA is delaying such a long time to hand launch the
> > satellite
> > until July? I would think they would want to get it out of there and
> > de-clutter the ISS. Given that it appears to be dead without a solar
> > panel
> > functioning, it seems like an obvious idea to me. Is there some
> > reason why
> > they can't schedule this sooner?
> > _______________________________________________
> > 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
>
> _______________________________________________
> 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
>
_______________________________________________
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: 6
Date: Sun, 17 Apr 2011 17:38:28 -0400
From: Stuart Balanger <wa2bss@xxxxx.xxx>
Subject: [amsat-bb] Question, & some comments!
To: AMSAT-BB@xxxxx.xxx
Message-ID: <BANLkTin5y76ScEenvrKG9eVhBauSbQgF=w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
*Hi all,
was wondering what mode both AO-51 & the ISS are in?
Also, the Mt. Beacon ARC Hamfeste was a smashing sccess
no rain, & abt. 18 people who passed evams, w/ 11 new Techs!
Am Hopeing to make the AMSAT weekend Symposium This Yr,
in Calif., & will more than likely take Amtrak out!
Hope everyone has a wonderful Passover, & Easter.
73,.Stu (WA2BSS)
*
------------------------------
Message: 7
Date: Sun, 17 Apr 2011 20:03:52 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: Question, & some comments!
To: Stuart Balanger <wa2bss@xxxxx.xxx>, AMSAT-BB@xxxxx.xxx
Message-ID: <Yo3t1g00P56cfur05o3tnU@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi Stu,
AO-51 can usually be confirmed here:
http://www.amsat.org/amsat-new/echo/CTNews.php
73,
Mark N8MH
At 05:38 PM 4/17/2011 -0400, Stuart Balanger wrote:
>*Hi all,
>was wondering what mode both AO-51 & the ISS are in?
>Also, the Mt. Beacon ARC Hamfeste was a smashing sccess
>no rain, & abt. 18 people who passed evams, w/ 11 new Techs!
>Am Hopeing to make the AMSAT weekend Symposium This Yr,
>in Calif., & will more than likely take Amtrak out!
>Hope everyone has a wonderful Passover, & Easter.
> 73,.Stu (WA2BSS)
>*
>_______________________________________________
>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: 8
Date: Sun, 17 Apr 2011 22:38:55 -0400
From: Louis McFadin <w5did@xxx.xxx>
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 6, Issue 221
To: amsat-bb@xxxxx.xxx
Message-ID: <9770AB6F-F347-434E-B65A-CC8D9B3BF84F@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
To all those speculating on the reason for ARISSat not coming on, I
recommend patience.
We will have a telecon with the Russian ham radio specialist and get the
actual information from him.
As soon as we have real information it will be passed on.
The satellite is very robust and is probably still useable without any
modifications. If a component has failed, we have another complete satellite
already in Moscow. Any module that has failed could easily be replaced.
So let's just wait and see what they tell us.
Lou McFadin
W5DID
ARISS US Hardware manager
On Apr 16, 2011, at 3:00 PM, amsat-bb-request@xxxxx.xxx wrote:
> Send AMSAT-BB mailing list submissions to
> amsat-bb@xxxxx.xxx
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://amsat.org/mailman/listinfo/amsat-bb
> or, via email, send a message with subject or body 'help' to
> amsat-bb-request@xxxxx.xxx
>
> You can reach the person managing the list at
> amsat-bb-owner@xxxxx.xxx
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of AMSAT-BB digest..."
>
>
> Today's Topics:
>
> 1. ARISSat-1 Failure to Transmit (Peter Portanova)
> 2. ARISSat-1/KEDR declared success by Roscosmos! (Alan P. Biddle)
> 3. Subject: Re: Verticals & Such on SSB Birds (Richard Lawn)
> 4. Re: ARISSat-1 - Battery Failure (tosca005@xxx.xxxx
> 5. Re: ISS Packet using AGWPE (JoAnne Maenpaa)
> 6. Re: Subject: Re: Verticals & Such on SSB Birds (Dave Guimont)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 16 Apr 2011 08:41:26 -0400
> From: "Peter Portanova" <wb2oqq@xxxxxxx.xxx>
> Subject: [amsat-bb] ARISSat-1 Failure to Transmit
> To: <AMSAT-BB@xxxxx.xxx>
> Message-ID: <0214AF1853F4487491EA8FC1CEA11C86@xxxx>
> Content-Type: text/plain; format=flowed; charset=Windows-1252;
> reply-type=original
>
> Hello,
>
> I don't possess any "inside information" on what the cause was of ARISSat-1
> not to be heard, however I have a theory. We know that Packet
> transmission's ended and began soon after the posted times for ARISSat to be
> powered on/off, this action was done because they agreed that the satellite
> "woke up". The power on sequence for ARISSat-1 is visual, meaning that if
> their was a battery failure they would not have seen the satellite power up.
> If we believe that this occurred a possible reason for not hearing the
> satellite was that it was connected to the wrong antenna, and seeing the
> coax in this area it is conceivable that this might be the cause. I know we
> will learn what actually occurred, at some point, it's our priority not
> theirs, perhaps we can have a contest, "pick the cause" and the winner can
> win a good night's sleep in a motel of their choice, satellite equipment not
> permitted.
>
> 73's Pete
> WB2OQQ
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sat, 16 Apr 2011 09:26:22 -0500
> From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
> Subject: [amsat-bb] ARISSat-1/KEDR declared success by Roscosmos!
> To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
> Message-ID: <7619564B827B4702B5E854FE39695EB2@xxxxxx>
> Content-Type: text/plain; charset="us-ascii"
>
> Looks like we have all been wrong about this. Yesterday, just after
> midnight Moscow time, I found this on the Roscosmos site:
>
>
> http://www.federalspace.ru/main.php?id=2&nid=11669&lang=en
>
> Russian Educational Satellite Works 16.04.2011
>
> Russia's Kedr minisatellite designed by students from Kursk and carried to
> the ISS under UNESCO's program in January has went on air.
> Its first broadcast was carried out on April 11-13 to mark the 50 years of
> the first manned space flight.
> The 30-kg Kedr will transmit 25 greetings in 15 different languages, photos
> of the Earth, telemetry and scientific data.
>
>
>
> Hats off to the satellite designers at Kursk U.
>
> More seriously, aside from the "embellishments" concerning Kursk, which in
> fact only did their experiment package, it looks as if someone had a timed
> release news article which they forgot to cancel.
>
>
> Alan
> WA4SCA
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 16 Apr 2011 11:39:26 -0400
> From: Richard Lawn <rjlawn@xxxxx.xxx>
> Subject: [amsat-bb] Subject: Re: Verticals & Such on SSB Birds
> To: amsat-bb@xxxxx.xxx
> Message-ID: <BANLkTim2p_3oSdh4vT_Q88Aq5jBTWNcioQ@xxxx.xxxxx.xxx>
> Content-Type: text/plain; charset=ISO-8859-1
>
> I too am always looking for ideas as I get older and know downsizing is
> sooner rather than later forcing me to move and shed my M2 rotatable pair.
> I've been slowly working on building double Moxon's for 440 and 2 meters
> both using #6 copper wire and trying to measure very carefully. Another list
> serve participant suggested I tried these as they have worked well for him
> and better than other stationary antennas he has tried. Next up for me when
> I have time is to try your Quadrifilars and I have another article or two on
> construction suggestions. My one big question is how did you get the #6 wire
> to solder? I use a gun and inevitably the joint breaks. What's your secret?
> Torch?
>
> Rick
> W2JAZ
>
>
> ------------------------------
>
> Message: 4
> Date: 16 Apr 2011 10:47:57 -0500
> From: tosca005@xxx.xxx
> Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
> To: R Oler <orbitjet@xxxxxxx.xxx>
> Cc: Amsat BB <amsat-bb@xxxxx.xxx>
> Message-ID: <Gophermail.2.0.1104161047570.7641@xxxx.xx.xxx.xxx>
> Content-Type: text/plain; format=flowed; charset=UTF-8
>
> On Apr 15 2011, R Oler wrote:
>
>>
> There are LOTS of reasons that the bird could have failed, in my viewpoint
> the BEST one is that the battery has some issues. Operating the vehicle in
> a thermal environment that it was not designed for would be a first guess,
> followed by some sort of "crib death" issue, and next comes parts connected
> wrong.
>>
> In any event the failure does not bode well for a successful sat
> deployment.
>>
>> See if this makes it on the board. Robert G. Oler WB5MZO
>>
>> _______________________________________________
>> 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
>>
> One small consolation is that if the ISS crew can't get it working before
> tossing it into space, it could (possibly) be brought back to Earth on a
> future return trip to be diagnosed and repaired on the ground.
>
> But let's hope it is something simple to fix up on the ISS and that someone
> on the crew can take a little time to fix it.
>
> But I also understand that none of those 3 scenarios are guaranteed (easy
> to fix, time to fix it, or return it to Earth).
>
> John P. Toscano, W0JT
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sat, 16 Apr 2011 11:50:12 -0500
> From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
> Subject: [amsat-bb] Re: ISS Packet using AGWPE
> To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
> Message-ID: <001201cbfc56$5ac10fa0$10432ee0$@xxx>
> Content-Type: text/plain; charset="us-ascii"
>
> Hello Peter,
>
>> connect to ISS using AGWPE with my soundcard.
>> can anyone help me with this?
>
> I found the links to JE9PEL's setup guides posted on the UISS main page to
> be helpful in getting my soundcard packet running:
> http://users.belgacom.net/hamradio/uisslinks.htm
>
>> How does one connect to the ISS digipeater?
>
> 1. One good way to learn is to see what kind of packets others are sending.
> You can spy on the ISS 145.825 MHz packet log at http://www.ariss.net/
>
> 2. 99% of the packet digipeats via ISS are UI packets (they aren't connected
> to any specific node) and pretty much are an AX.25 CQ-with-text-string so to
> speak.
>
> 3. To setup your packet path for the ISS setting the UNPROTO parameter to
> 'via ARISS'
> (UNPROTO CQ VIA ARISS) is about all that is needed for the average user. The
> digipeater at the ISS plugs in its specific callsign RS0ISS-3 or RS0ISS-4 in
> response to the ARISS alias. There is a pull-down menu in the UISS program
> where you can select ARISS.
>
> 4. An AX.25 hard-connection to the RS0ISS-11 Packet PBBS (C RS0ISS-11) is
> not recommended over highly populated areas. If you establish a connection
> to RS0ISS-11 the full AX.25 protocol for packet retries and timeouts takes
> effect. Now your hard-connection retries will compete with the dozens of UI
> packet transmissions and you'll never get to the PBBS anyways. You'll see
> the ISS digi faithfully retrying and retrying per AX.25 protocol as it goes
> over the horizon ... it will timeout over someone else's QTH. Most of the
> PBBS messages you occasionally see are "Hello There" postings and not worth
> the effort compared to the quick keyboard UI packet QSOs that many
> successfully complete.
>
> 5. If you run UI-View along with UISS and AGWPE you can get an APRS map
> showing the locations of the stations sending location data via ISS digi. I
> have one example of an ISS pass mapped at
> http://home.comcast.net/~k9jkm/UI_View_ISS_Pass.jpg
>
> Hope this helps,
> --
> 73 de JoAnne K9JKM
> k9jkm@xxxxx.xxx
>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Sat, 16 Apr 2011 11:53:28 -0700
> From: Dave Guimont <dguimon1@xxx.xx.xxx>
> Subject: [amsat-bb] Re: Subject: Re: Verticals & Such on SSB Birds
> To: Richard Lawn <rjlawn@xxxxx.xxx>
> Cc: amsat-bb@xxxxx.xxx
> Message-ID: <D2.3E.09483.5A5E9AD4@xxxxxxxxxxxxx.xxxx.xx.xxx>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
>
>> I too am always looking for ideas as I get older and know downsizing is
>> sooner rather than later forcing me to move and shed my M2 rotatable pair.
>> I've been slowly working on building double Moxon's for 440 and 2 meters
>> both using #6 copper wire and trying to measure very carefully. Another
list
>> serve participant suggested I tried these as they have worked well for him
>> and better than other stationary antennas he has tried. Next up for me when
>> I have time is to try your Quadrifilars and I have another article or two
on
>> construction suggestions. My one big question is how did you get the #6
wire
>> to solder? I use a gun and inevitably the joint breaks. What's your secret?
>> Torch?
>>
>
> I use a torch with a large solder tip attached to it, es the torch
> heats the tip....If you are very careful not to oxidize the joint,
> just the torch will work.
>
>
>
>
> 73, Dave, WB6LLO
> dguimon1@xxx.xx.xxx
>
> Disagree: I learn....
>
> Pulling for P3E...
>
> ------------------------------
>
> _______________________________________________
> 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 6, Issue 221
> ****************************************
------------------------------
Message: 9
Date: Sun, 17 Apr 2011 21:06:32 -0700
From: "Art McBride" <kc6uqh@xxx.xxx>
Subject: [amsat-bb] Re: ground plane on
To: "'Andrew Rich'" <vk4tec@xxxxxxxxxxxxx.xxx>, "'KF1BUZ'"
<kf1buz@xxxxx.xxx>
Cc: AMSAT-BB@xxxxx.xxx
Message-ID: <1870D5632F944A6C9D090287BFB1D3B6@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
J-Pole antennas are a 1/2 wave element with a 1/4 wavelength matching stub.
The Matching stub allows the dipole to be fed from the bottom end without
interference from the feed line. Open Line (J), tapped coax, or LC Circuit
can be used to match the dipole to a coax at the end, accomplishing the same
performance, including the same overhead null one expects from a vertical
dipole.
Art,
KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Andrew Rich
Sent: Saturday, April 16, 2011 11:03 PM
To: KF1BUZ
Cc: <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: ground plane on
http://www.youtube.com/watch?v=L4v9wKMxRHQ&feature=youtube_gdata_player
Sent from my iPhone
Andrew Rich
On 17/04/2011, at 15:53, KF1BUZ <kf1buz@xxxxx.xxx> wrote:
> A Copper Jpole, has this been tried?
> Just thinking it might make my getting into the birds better.
>
> Thanks
> Dan
> KF1BUZ
>
>
> _______________________________________________
> 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
_______________________________________________
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
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database 6048 (20110417) __________
The message was checked by ESET NOD32 Antivirus.
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------------------------------
Message: 10
Date: Sun, 17 Apr 2011 15:48:16 -0500
From: "David Maciel" <xe3dx@xxxxxxx.xxx.xx>
Subject: [amsat-bb] XE3DX on EK19 Today
To: <Undisclosed-Recipient:;>
Message-ID: <95B8A008A2F242E9B4E85AB268595A09@xxxx>
Content-Type: text/plain; charset="iso-8859-1"
Today I'll be activating EK19.
I hope to hear.
17/april/2011 21:32Z AO-51 EK19
17/april/2011 23:11Z AO-51 EK19
David
XE3DX
EK19
------------------------------
Message: 11
Date: Sun, 17 Apr 2011 22:49:54 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: ground plane on
To: <kf1buz@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <BLU133-W19E19BD5C1A820EE8CBFF6A9910@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Dan,
On 17/04/2011, at 15:53, KF1BUZ <kf1buz@xxxxx.xxx> wrote:
> A Copper Jpole, has this been tried?
> Just thinking it might make my getting into the birds better.
>
> Thanks
> Dan
> KF1BUZ
>
If I interpret this right (subject + message), you are asking if adding a
Ground Plane to a J-pole antenna will improve its performance in a satellite
ground station application. I believe the answer is no, though someone
would need to do the modeling to understand for sure.
A J-pole is an end-fed dipole, with the "J" portion being a 1/4 wave long at
the frequency of the antenna. Recalling some RF theory stuff, a 1/4 wave
"matching section" has a low impedance on one end, and a high impedance at
the other. One end goes to the coax feed line (low impedance), and the
other is attached to the end (high impedance) part of the dipole. You will
find that the single pipe section of the J-pole antenna is about a 1/2 wave
long at the antenna's design frequency, and since it's connected directly to
the end of the matching section, it makes for an end-fed dipole. Some
designs use a 5/8 wave dipole section for a little extra gain towards the
horizon.
So a J-pole antenna is actually a pretty effective satellite antenna,
similar to a simple ground plane antenna but mechanically more robust. I've
used both kinds. My very first satellite contact ion 1993 was using one for
the uplink into RS-10, and that contact was followed by many many more.
That antenna is still in service nearly 18 years later. (If you hear or use
the KO6TH APRS iGate, you're using it!) I've got two SO-239-type Ground
Plane antenna carcases in the garage; they didn't last. As a satellite
antenna, both Ground Plane and J-pole antennas do have a null directly
overhead, but very few satellite passes go directly overhead, and when they
do, they spend very little time there. So don't sweat it.
A J-pole with a 1/2 wave section on top will also work as a dual band 2M /
70CM antenna, with the upper band on the antenna's 3rd harmonic. Using the
antenna that way, I'm told, it has a radiation pattern that is lifted
somewhat from the horizon, so it should be a good match for satellite work.
But, back to your question... The J-pole antenna is a totally balanced
system in itself, and doesn't suffer for not having a ground plane below it.
What putting a ground plane some distance below the end of an end-fed
dipole will do to the radiation pattern, however, is a modeling task for
someone at a higher mental pay-grade than me. My guess is that it will
depend very significantly exactly where the ground plane is mounted. You
could alter both the radiation pattern and the feed point impedance with
that addition, and maybe make things worse.
Hope this helps a little,
Greg KO6TH
------------------------------
Message: 12
Date: Sun, 17 Apr 2011 22:41:27 -0800
From: "Edward R. Cole" <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: ground plane on
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>, <kf1buz@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <201104180641.p3I6fSWI095123@xxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Greg, Dan:
One of my first antennas put up in Alaska was a simple 2m J-Pole. I
used the upper portion of a TV mast and used a 1/4 wave section of
copper tubing clamped 3/4 wave length below the top end of the
mast. Attaching coax to the stub and mast at a point to give a
50-ohm match. Worked fine. Note that the longer part of the J-Pole
continued below where the 1/4 wave stub attached for about ten
feet. There was no matching problems. What affect on the radiation
pattern resulted is unknown, but I observed no detrimental effects.
Adding ground radials to the bottom of the J-pole should not have a
big effect on tuning. I think the only effect on radiation is that
you establish a better ground for the vertical 1/2 wave dipole
(perhaps lowering the pattern a little closer to the horizon.
I built a 6m/10m J-pole and it is mounted at ground level attached to
a short tower set into the ground. The tower seems to not affect the
tuning point. This summer I may try adding some 1/4 wave radials to
the base to see if it has any affect. I set it up mainly for working
6m/10m FM, but is also usable for mode-A satellites. I have compared
it to my 3-element triband yagi on A07 mode-A and the beam is better.
http://www.kl7uw.com/J-Pole.htm
Sidenote: I have re-installed satellite antennas for 2m, 70cm , and
13cm on my short tower this weekend. Both 2m and 70cm antennas
working well. I have not installed the 2.4 GHz LNA or
downconverters, as yet. Control wiring for the satellite antennas
has not been connected plus the B5400 az-el rotator control unit
still requires repair so antennas not rotatable.
http://www.kl7uw.com/sat.htm
73, Ed - KL7UW
At 09:49 PM 4/17/2011, Greg D. wrote:
>Hi Dan,
>
> On 17/04/2011, at 15:53, KF1BUZ <kf1buz@xxxxx.xxx> wrote:
>
> > A Copper Jpole, has this been tried?
> > Just thinking it might make my getting into the birds better.
> >
> > Thanks
> > Dan
> > KF1BUZ
> >
>
>If I interpret this right (subject + message), you are asking if
>adding a Ground Plane to a J-pole antenna will improve its
>performance in a satellite ground station application. I believe
>the answer is no, though someone would need to do the modeling to
>understand for sure.
>
>A J-pole is an end-fed dipole, with the "J" portion being a 1/4 wave
>long at the frequency of the antenna. Recalling some RF theory
>stuff, a 1/4 wave "matching section" has a low impedance on one end,
>and a high impedance at the other. One end goes to the coax feed
>line (low impedance), and the other is attached to the end (high
>impedance) part of the dipole. You will find that the single pipe
>section of the J-pole antenna is about a 1/2 wave long at the
>antenna's design frequency, and since it's connected directly to the
>end of the matching section, it makes for an end-fed dipole. Some
>designs use a 5/8 wave dipole section for a little extra gain
>towards the horizon.
>
>So a J-pole antenna is actually a pretty effective satellite
>antenna, similar to a simple ground plane antenna but mechanically
>more robust. I've used both kinds. My very first satellite contact
>ion 1993 was using one for the uplink into RS-10, and that contact
>was followed by many many more. That antenna is still in service
>nearly 18 years later. (If you hear or use the KO6TH APRS iGate,
>you're using it!) I've got two SO-239-type Ground Plane antenna
>carcases in the garage; they didn't last. As a satellite antenna,
>both Ground Plane and J-pole antennas do have a null directly
>overhead, but very few satellite passes go directly overhead, and
>when they do, they spend very little time there. So don't sweat it.
>
>A J-pole with a 1/2 wave section on top will also work as a dual
>band 2M / 70CM antenna, with the upper band on the antenna's 3rd
>harmonic. Using the antenna that way, I'm told, it has a radiation
>pattern that is lifted somewhat from the horizon, so it should be a
>good match for satellite work.
>
>But, back to your question... The J-pole antenna is a totally
>balanced system in itself, and doesn't suffer for not having a
>ground plane below it. What putting a ground plane some distance
>below the end of an end-fed dipole will do to the radiation pattern,
>however, is a modeling task for someone at a higher mental pay-grade
>than me. My guess is that it will depend very significantly exactly
>where the ground plane is mounted. You could alter both the
>radiation pattern and the feed point impedance with that addition,
>and maybe make things worse.
>
>Hope this helps a little,
>
>Greg KO6TH
>
>
>_______________________________________________
>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
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
------------------------------
Message: 13
Date: Mon, 18 Apr 2011 10:03:19 -0400
From: "Bill W1PA" <w1pa@xxxxxxx.xxx>
Subject: [amsat-bb] Re: RF Quiet my digital recorder
To: <AMSAT-BB@xxxxx.xxx>
Message-ID: <BAY157-ds7AFB8E64247988F5C881E98910@xxx.xxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
My Olympus DS-2 is pretty bad. In either play or record mode,
I get wide processor noise on both 2m and 435 if it
gets within a foot or so of the Arrow (in any direction). It sounds
like power-line buzz noise. If I use a direct line-in
(FT-530 ear to DS-2 Mic in), it's there all the time -- really bad.
My goal is to "y" the stereo mic in, one side to the FT-530 audio
coming from my headset, and one side to an external mic (so I can hear the
difference in play-back between what I say, and what I can hear on the
downlink).
With the FT-530 in one hand, the Arrow in the other, pen and paper is not an
option.
I also want to download the recordings (.wma or .mp3) so an analog recorder,
although "rf quiet", is not an option.
I plan to try shielding the recorder.... encasing it in either metal mesh,
or maybe
an aluminum fly-lure box, and then wrapping the line on a toroid core.
In the mean time, is anyone using and can recommend a portable
digital voice recorder with a mic-in jack (preferably stereo) that
is "rf quiet"?
Bill W1PA
------------------------------
_______________________________________________
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 6, Issue 224
****************************************
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