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CX2SA > SATDIG 22.09.10 20:03l 267 Lines 7880 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V5 390
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Sent: 100922/1903Z @:CX2SA.LAV.URY.SA #:21243 [Minas] FBB7.00e $:AMSATBB5390
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Antenna Opinions? (Mark L. Hammond)
2. Downconverters on Ebay (Matt Patterson)
3. Re: Antenna Opinions? (n0jy@xxxxxxx.xxxx
4. Re: Jan 09 sat passes (Zachary Beougher)
5. antennas (Dads)
6. Re: Jan 09 sat passes (Nigel Gunn G8IFF/W8IFF)
----------------------------------------------------------------------
Message: 1
Date: Wed, 22 Sep 2010 09:38:34 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: Antenna Opinions?
To: "Stan, W1LE" <stanw1le@xxxxxxx.xxx>, Amsat - BBs
<amsat-bb@xxxxx.xxx>
Message-ID:
<AANLkTim=_NVBwwNkYxuGC4cQFWdb036nU7PK-q5y-VQ2@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Okay, my 35 ele M2 is about 10 feet long:
http://www.m2inc.com/index2.html
They do sell a 22 element version that is about 6' long:
http://www.m2inc.com/index2.html
Mark N8MH
On Wed, Sep 22, 2010 at 9:10 AM, Mark L. Hammond <marklhammond@xxxxx.xxx>
wrote:
> I installed one of these a few months ago, in place of my 20-turn Wimo
> helix. ?Both are nice antennas, but I'll give the edge to the M2 yagi
> (more gain and it mounts balanced on the elevation boom). ? I have
> mine with vertical polarity. ? Since AO-51 is linear on L-band, it
> shouldn't matter--but putting that little antenna horizontal in line
> with my metal boom didn't seem to make much sense....
>
> 73,
>
> Mark N8MH
>
> On Wed, Sep 22, 2010 at 8:50 AM, Stan, W1LE <stanw1le@xxxxxxx.xxx> wrote:
>> ?M2 makes a 35 element 1296 MHz yagi, on about a 6' boom.
>> individual elements are insulated "thru the boom" with keepers.
>> Folded dipole driven element.
>> I used 2 each stacked vertically for AO-40. Yes, they are pointy.
>>
>> Stan, W1LE ? ? ?Cape Cod ? ? FN41sr
>>
>>
>>
>> On 9/22/2010 1:52 AM, Art McBride wrote:
>>> Greg,
>>> ? I would keep the one that works the best.
>>> I have been disappointed in the performance of long boom Yagi's for UHF.
>>> Resistance loss in the elements often reduces the gain by several dB over
>>> calculated gain. Also they are very narrow band, the helix is good for an
>>> octave.
>>> Art,
>>> KC6UQH
>>> --
>>
>> _______________________________________________
>> 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
>>
>
>
>
> --
> Mark L. Hammond [N8MH]
>
--
Mark L. Hammond [N8MH]
------------------------------
Message: 2
Date: Wed, 22 Sep 2010 09:16:22 -0500
From: Matt Patterson <mattpatt@xxxxxxxx.xxx>
Subject: [amsat-bb] Downconverters on Ebay
To: amsat-bb@xxxxx.xxx
Message-ID: <4C9A0FB6.8020103@xxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Just found a person selling several downconverters on Ebay that look
like they could be used for AO-51 mode S. (with modifications) No Bias T
or power supplies though.
http://shop.ebay.com/the_consumer_rebellion/m.html?_nkw=&_armrs=1&_from=&_ipg=
&_trksid=p4340
73 Matt
W5LL
------------------------------
Message: 3
Date: Wed, 22 Sep 2010 09:18:30 -0500 (CDT)
From: n0jy@xxxxxxx.xxx
Subject: [amsat-bb] Re: Antenna Opinions?
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <30710.170.49.217.216.1285165110.squirrel@xxxxxxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
Greg,
My two cents is that AO-51 seems to be very sensitive on the L band
receive, so a decent antenna will get in fine. I have been using RHCP on
my uplink, a 31 turn homebrew helix modeled after the VE3NPC, and I have
not experienced any fading problems on uplink. My choice then is to opt
for the circular polarization. I do feed mine directly at the antenna
(about 5 feet of LMR-400 from the upconverter) but I think your helix with
the power you are feeding it is probably quite capable and a better idea
to avoid the fading.
73,
Jerry
N0JY
>
> Hi folks,
>
> So, we had a swap meet a couple of weekends ago, and I found a bargain I
> couldn't refuse. Of course, now I need to decide what to do with it...
>
>
> I'm leaning towards putting the Helix back up, and passing the new one on
> to someone more able to use it. What are your thoughts?
>
> Thanks,
>
> 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
>
------------------------------
Message: 4
Date: Wed, 22 Sep 2010 10:26:43 -0400
From: "Zachary Beougher" <zack.kd8ksn@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Jan 09 sat passes
To: "francesco messineo" <francesco.messineo@xxxxx.xxx>,
<amsat-bb@xxxxx.xxx>
Message-ID: <SNT111-DS24D2DB395CD2CAA383BAD7B3600@xxx.xxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Frank,
I simulated that time on Orbitron ( 06 January 2009, 20:20 UTC), and
according to Orbitron, neither AO27 or VO52 were over your QTH at the time.
I am sending you the screenshot of that particular time via a different
email message.
73,
Zack
KD8KSN
--------------------------------------------------
From: "francesco messineo" <francesco.messineo@xxxxx.xxx>
Sent: Wednesday, September 22, 2010 5:52 AM
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Jan 09 sat passes
> Hello all,
>
> I have a rather unusual question: can anyone tell me what satellite
> was visible over JM49MG around 20.20 UTC of 06 Jan 2009? I have in my
> log a contact via VO-52, but I received a QSL for that same contact
> via "AO-07 orbit 56249". I tried with my predict program but with
> current keps it gives result not meaningful for 06 January 2009.
> Thanks in advance
>
> Frank IZ8DWF
> _______________________________________________
> 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: Wed, 22 Sep 2010 09:33:27 -0500
From: "Dads" <w0sat@xxx.xxx>
Subject: [amsat-bb] antennas
To: <amsat-bb@xxxxx.xxx>
Message-ID: <SNT125-DS80B283FB5906CE7758CA3E4600@xxx.xxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi : I have owned and tried nearly antenna on the market.
I have used patch feed , dishes. eggbeaters, yagi,s
etc.
I have had Cushcraft, Hy gain , M2, and KLM , s
The best overall performance antennas are KLM, s .
I use switchers on all the antennas too.
Jerry w0sat
------------------------------
Message: 6
Date: Wed, 22 Sep 2010 15:15:09 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: Jan 09 sat passes
To: amsat-bb@xxxxx.xxx
Message-ID: <4C9A1D7D.1020001@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
But did you use keps from that time period? Today's keps won't work.
On 22-Sep-10 14:26, Zachary Beougher wrote:
> Frank,
>
> I simulated that time on Orbitron ( 06 January 2009, 20:20 UTC), and
> according to Orbitron, neither AO27 or VO52 were over your QTH at the time.
> I am sending you the screenshot of that particular time via a different
> email message.
>
> 73,
>
> Zack
> KD8KSN
>
------------------------------
_______________________________________________
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 390
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