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CX2SA > SATDIG 27.12.08 21:30l 198 Lines 6103 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V3 672
Path: IZ3LSV<IK2XDE<HB9TVW<DB0ANF<CX2SA
Sent: 081227/2025Z @:CX2SA.LAV.URY.SA #:62002 [Minas] FBB7.00e $:62002_CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: reminiscing about a long ago (richard@xxxxx.xxxxx.xx.xxx
2. Re: Elk Antenna vs Arrow Antenna (i8cvs)
3. Re: Elk vs. Arrow (Clint Bradford)
4. Re: Elk vs. Arrow (n3tl@xxxxxxxxx.xxxx
----------------------------------------------------------------------
Message: 1
Date: Sat, 27 Dec 2008 17:38:54 +0000
From: richard@xxxxx.xxxxx.xx.xx
Subject: [amsat-bb] Re: reminiscing about a long ago
To: amsat-bb@xxxxx.xxx
Message-ID: <E1LGd7m-0001aC-9E@xxxxxxxxxxxx.xxxx.xxxxx.xxx>
Content-Type: text/plain
James W8ISS wrote:
I am wondering how many of us had relatives that did something during those
fun times?
No relatives, just lil ole me. I was mixed up in the manned space flight comms
network in the Gemini days of the 1960's. NASA's comm links to various places
came through London and I worked for the British Post office in the control
centre for overseas telegraph comms but we did NASA voice as well as teletype
and telemetry too via our wireless stations - to their tracking stations in
Kano (Nigeria), Canary Islands and Tananarive (Madagascar). I even had a
special desk which was staffed 24 hours a day during a manned flight. Still
have tapes from the voice network for some of the Gemini missions (haven't
played them for years).
Nasa's London comm switching centre was in the same building and there was a
multi-rack computerised message switch there. One night shift I stuck a label
on the side of it that said "made by slave labour in the Soviet Union". The
(American) Station Director had a sense-of-humour failure over that one
(remember this was in the 1960's) but I don't think they ever found out who
applied the sticker.
73
Richard G3RWL
------------------------------
Message: 2
Date: Sat, 27 Dec 2008 19:35:29 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Elk Antenna vs Arrow Antenna
To: "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>, "Edward Cole"
<kl7uw@xxxxxxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <000e01c96851$e5759da0$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Nigel,
PL-259 is NOT a constant impedance connector while N connectors
or C, BNC, TNC, SMA are constance impedance and this make a great
difference matching devices to 50 ohm when the frequency becames high
and the lenght of a PL-259 is a considerable part of a wavelenght.
Figure out what happens using a PL-259 at 10 GHz i.e. at a wavelenght
of 3 cm
Since N/m (male connector) or N/f (female connectors ) are constant
impedance provided they are properly assembled to the coax cable they
can be used up to 12 GHz
For additional informations read the following page.
http://www.maurymw.com/support/pdfs/5A-021.pdf
73" de
i8CVS Domenico
----- Original Message -----
From: "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>
To: "Edward Cole" <kl7uw@xxxxxxxxx.xxx>
Cc: <amsat-bb@xxxxx.xxx>
Sent: Saturday, December 27, 2008 5:53 PM
Subject: [amsat-bb] Re: Elk Antenna vs Arrow Antenna
> Terminating N connectors (or C, BNC, TNC and others) is identical to
> terminating PL-259s if you buy good quality 259s.
>
>
> Edward Cole wrote:
> >
> > What I hear from local hams is "its too hard to assemble N
> > connectors" to which I say "hogwash" (a US term meaning
> > ridiculous).
>
> _______________________________________________
> 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: Sat, 27 Dec 2008 11:12:57 -0800 (GMT-08:00)
From: Clint Bradford <clintbrad4d@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Elk vs. Arrow
To: amsat-bb@xxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID:
<8803448.1230405177447.JavaMail.root@xxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
>> ... the Elk out-performs my Arrow consistently ...
For AO-51 and SO-50, the Arrow seems to "capture" the birds noticeably better
than the Elk for me. The Arrow makes the Elk feel "sloppy" in comparison ...
just my first-hand observations.
Clint Bradford
--------------------------------------
Clint Bradford, K6LCS / KAF3359
909-241-7666 - cell
------------------------------
Message: 4
Date: Sat, 27 Dec 2008 19:46:32 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] Re: Elk vs. Arrow
To: Clint Bradford <clintbrad4d@xxxxxxxxx.xxx>, amsat-bb@xxxxx.xxxx
amsat-bb@xxxxx.xxx
Message-ID:
<122720081946.12701.49568618000C77D50000319D22230682329B0A02D2089B9A019C
04040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain
Clint,
Let's agree to disagree on this because I feel exactly the opposite. Maybe you
should revisit the Elk with a handle like the one you've made for your Arrow,
which likely would mitigate the "sloppiness" you relate. If we lived closer,
we'd make a few passes side-by-side just to see who hears what when, and for
how long.
73 to all,
Tim
-------------- Original message from Clint Bradford
<clintbrad4d@xxxxxxxxx.xxx>: --------------
> >> ... the Elk out-performs my Arrow consistently ...
> For AO-51 and SO-50, the Arrow seems to "capture" the birds noticeably
better than the Elk for me. The Arrow makes the Elk feel "sloppy" in
comparison ...
> just my first-hand observations.
>
> Clint Bradford
>
>
> --------------------------------------
> Clint Bradford, K6LCS / KAF3359
> 909-241-7666 - cell
> _______________________________________________
> 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 member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 3, Issue 672
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