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CX2SA > SATDIG 04.04.14 21:04l 370 Lines 12556 Bytes #999 (0) @ WW
BID : AMSATBB9123
Read: GUEST
Subj: AMSAT-BB-digest V9 123
Path: IZ3LSV<IW0QNL<JH4XSY<JE7YGF<7M3TJZ<CX2SA
Sent: 140404/1903Z @:CX2SA.SAL.URY.SA #:4922 [Salto] FBB7.00e $:AMSATBB9123
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Arrow and ELK antennas (Douglas Phelps)
2. PCSAT Spin rate still 0.6 RPM (Robert Bruninga)
3. Re: Arrow and ELK antennas (Clint Bradford)
4. Re: Arrow and ELK antennas (Clint Bradford)
5. Re: Arrow and ELK antennas (John Becker)
6. Re: 13 colonies special event (Jeff Griffin)
7. TG9ADQ (Wyatt Dirks)
8. FUNcubes 2, 3 and 4 in Spring issue of OSCAR News (M5AKA)
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Message: 1
Date: Thu, 3 Apr 2014 11:54:34 -0700 (PDT)
From: Douglas Phelps <dphelps1@xxxxxxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Arrow and ELK antennas
Message-ID:
<1396551274.75702.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Is the UHF gain the same on both the Arrow and ELK antennas? ?I think I read
that field comparisons seemed to indicate the were close to the same but the
UHF part has 7 elements and, although I know its a log periodic antenna, the
ELK does not appear to have as much UHF gain. Any help or experience would
be appreciated.
Doug K9DLP?
------------------------------
Message: 2
Date: Thu, 3 Apr 2014 16:09:01 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] PCSAT Spin rate still 0.6 RPM
Message-ID: <d8fb1a3ba6e5f8185aeefd50f0a9faaf@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
For what it's worth: PCSAT is still maintaining a 0.6 RPM spin about the Z
axis.
Today for fun, we commanded PCSAT and got 4 minutes of 10 second data.
During 100 seconds it completed 1 revolution which equates to 0.6 RPM, the
same rate as 13 years ago.
>From that we conclude that our (black/white) solar radiation differential
pressure spin system is still working fine. AND that the white paint has
not changed in 13 years in space (it was very expensive unobtainium
two-part white space paint begged from a government launch agency).
Only the equatorial antennas are painted black and white on the front and
back to give us the Z spin. The others were "Stanley yellow".
See the original photo on http://aprs.org/pcsat.html
As a refresher, in addition to this 0.6 RPM around the Z axis, there is
also the 0.02 RPM tumble about the Z axis since Z has a bar magnet to
follow the Earth's magnetic field which then tumbles once over each pole.
Users: Routine Digipeating via PCSAT is not encouraged, since every now
and then (very rare) we do take a stab at commanding it, and invariably,
just when we are getting lucky, someone hits it with a packet for
digipeating and robs us of the ONE-PACKET chance we have of getting in.
But then we so rarely command it, that it does not make sense to insist
that no one use it either.
Just glad it is still working (sort of)...
Bob, WB4APR
------------------------------
Message: 3
Date: Thu, 03 Apr 2014 13:09:56 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Arrow and ELK antennas
Message-ID: <8A1EBAAA-9B96-4873-82EE-2765903567F2@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
A discussion on the "Arrow vs. Elk" issue is posted here ...
http://work-sat.com/My_Gear.html
And I just saw an Arrow Sat antenna go up on eBay ... the ULTIMATE
model, with diplexer ...
http://www.ebay.com/itm/331169185629
Clint K6LCS
------------------------------
Message: 4
Date: Thu, 03 Apr 2014 13:30:54 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Arrow and ELK antennas
Message-ID: <B8462E84-028B-46AD-BF49-5E558A4ACC6F@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
I just had someone privately email me, berating me for making him click a
link for
background info on this topic, instead of simple posting it here. OK, here
we go ...
The Great Antenna Debate -
Now that you have the basic information on the Arrow II and Elk Hand Held
Satellite Antennas, you'll likely become part of the great debate as to
which antenna is better than the other. The fact is, they're both great
antennas! You'll have to decide for yourself as it all comes down to
personal taste. Read the article by K6LCS - Clint Bradford as he attempts to
put a final word on the debate!
Every few months a thread starts somewhere on the 'Net - demeaning Arrow
Antennas for whatever reason. Or the "Elk vs. Arrow" silliness - where one
will tell all that one or the other is vastly superior to the other ...
There's plenty of "Elk vs. Arrow" debate on the `Net. A lot of it pure
rubbish - and not written by people who have actually purchased and own both
units as they make their uneducated allegations. A couple of the
re-occurring themes ...
"Arrow doesn't publish gain numbers for their antennas."
This is true. Maybe a little "arrogant" of Arrow, too (grin). But reliable
test data is out there - and thousands of owners will attest that their
Arrow Antennas are performing magnificently for what they were designed to do.
"The Arrow is hard to transport."
Well, I devote my entire Ford Ranger's covered pickup bed to my Arrow when I
take it places. Rarely has it been disassembled. But to make it absolutely
flat, all one needs to do is unscrew the three 2M element pairs, and you
have a flat plane of an antenna.
"Arrows are all engineered wrong - they cannot possibly work."
A little story for you. While working for HRO-Anaheim a few years ago, I
sold an Arrow to a client for working the satellites. I had first-hand
experiences with the Arrow, and therefore could wholeheartedly recommend
them to others. The gentleman was waiting for me to open up the shop the
next morning, with his Arrow in hand.
"I know antenna theory, and this antenna cannot possibly work - it is
engineered all wrong - I want a refund!" - he demanded.
Hmmm. Part of me wanted to discover if he assembled it correctly, and
whether or not he actually tested it. But the other part of me was thinking,
"Well, I can purchase it myself as an open-box item ... "
Which I did. And it is the SAME antenna that I have used the past 6+ years
for EVERY demo and presentation I have given.
Moral of the story: The Arrow Antenna may not please some engineers. But it
sure pleases those who desire to work the FM satellites.
"The Arrow Antenna is much heavier ... "
I have brand-new, un-opened Elk and brand-new, un-opened Arrow in my hands.
The Elk package weighs 35.6 ounces. The Arrow weight 33.6 ounces. Any
"weight difference issue" is, well, NOT an issue.
And on and on ... EITHER antenna is a great investment. Most of the
anti-Arrow nonsense on the `Net remind me of while my wife was proudly
carrying her Nikon F in the 1970s (arguably the most significant SLR in 35mm
history), others would comment, "Oh, my Pentax / Minolta / Canon is as good
as that ... " --- But you never heard any Nikon owner state any such
comparison ... (grin)
How do the Elk and Arrow compare? Both work the FM birds very well. Either
make working the FM sats feel like "cheating" - the gain is that dramatic
over any HT whip improvements you might make.
But from someone who has purchased both and has used them both, the Arrow
"senses" the initial capturing of a sat's signal more definitively than the
Elk does. I mean, in front of darned near every audience, I'll declare,
"There it is!" - when those close to me don't hear anything of note. But
that slight "dip" in the background noise ... no SWR meter can detect it ...
you can just hear the beginning of capturing the signal better with the
Arrow than with the Elk. This is NOT a scientific conclusion - just my
personal observation after working the sats for several years with both
antennas. **
And although it takes more patience and finesse to work with "lesser"
antennas, remember this: One of the first 2M reception reports from the
250mW transmitter aboard the new ARISSat-1 satellite was from a gentleman
using a STOCK DUCK on his Yaesu VX-8 HT! SO ... simple HT antenna
improvements (Smiley 270A ... Diamond SHR-320A) are certainly viable options!
Antenna suggestions - and DIY projects - on the ANTENNAS page at ...
http://www.work-sat.com
Clint Bradford - K6LCS
(**Editor's Note: I have experienced this phenomenon myself! This really
does happen.)
/end/
------------------------------
Message: 5
Date: Thu, 03 Apr 2014 16:25:57 -0500
From: John Becker <w0jab@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Arrow and ELK antennas
Message-ID: <533DD1E5.6080401@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 4/3/2014 3:30 PM, Clint Bradford wrote:
> I just had someone privately email me, berating me for making him click a
link for
> background info on this topic, instead of simple posting it here. OK, here
we go ...
Let them click. Hand broke or just lazy?
Those of us on a satellite system have a daily bandwidth unless
one can afford unlimited service. (price that sometime)
I would rather see a link the driving up my daily bandwidth usage.
John, W0JAB
------------------------------
Message: 6
Date: Thu, 3 Apr 2014 17:32:08 -0400
From: "Jeff Griffin" <kb2m@xxxxxxx.xxx>
To: "'Gus'" <gus@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: 13 colonies special event
Message-ID: <002401cf4f84$2f9cdb40$8ed691c0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Ah, I just love it when someone tries to make fun of a spelling check error
with a spelling check error of his own! Anyway it was a serious post, not
one to be taken any other way......
73 Jeff kb2m
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Gus
Sent: Thursday, April 3, 2014 2:15 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: 13 colonies special event
Glad to heart it! We spend too much effort getting them UP there. And
besides, there is always the rare chance someone would get hit on the head.
On 04/03/2014 10:36 AM, Jeff Griffin wrote:
> It has been decided by the 13 colonies special event group that there
> will be no satellite precipitation in the event this year.
--
Gus 8P6SM
The Easternmost Isle
_______________________________________________
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: 7
Date: Thu, 3 Apr 2014 20:14:29 -0500
From: Wyatt Dirks <wyattdirks@xxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] TG9ADQ
Message-ID: <BAY179-W73F404D4FFE55D92B866A0CD6F0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Just worked TG9ADQ on fo29. Also heard TG9ANF.
They were both cqing on the same freq and neither could hear very well.
Listen for them and hopefully get them in the log. I believe they are both
using Omni antennas which is the limiting factor I believe.
73 Wyatt
AC0RA
------------------------------
Message: 8
Date: Fri, 4 Apr 2014 11:33:08 +0100 (BST)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FUNcubes 2, 3 and 4 in Spring issue of OSCAR News
Message-ID:
<1396607588.98013.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
The Spring edition of the
AMSAT-UK publication OSCAR News,now available for download by E-members,
features a report on the FUNcube-2, 3 and 4 payloads to be carried on
three new satellites
http://amsat-uk.org/2014/04/04/spring-issue-of-oscar-news-2/
MO-76 $50sat is Revolution Education project of the month
http://amsat-uk.org/2014/04/03/mo-76-50sat-is-rev-ed-project-of-the-month/
The final edition of the ARTSAT1:INVADER (CO-77) promotional video has now
been added to
http://amsat-uk.org/2014/04/03/artsat1invader-designated-oscar-77/
NASA - Roscosmos co-operation
http://spacekate.com/2014/is-us-russian-space-co-operation-at-risk/
----
Trevor M5AKA
AMSAT-UK
Website http://amsat-uk.org/
Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396
Twitter https://twitter.com/AMSAT_UK----
------------------------------
_______________________________________________
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 9, Issue 123
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