I've been reading about the construction of a few microsats and I see "Space
Grade Soldering" mentioned a few times. So I'm curious as to what that entails ?
I'd guess for starters the solder itself wouldn't be your standard 60/40 rosin
cored stuff but I don't know ! and I'd imagine there'd be something do with
Can someone enlighten me or point me at a URL on the matter ?
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT
Scanned with Copfilter Version 0.84beta3a (ProxSMTP 1.6)
AntiSpam: SpamAssassin 3.2.3
AntiVirus: ClamAV 0.91.2/5599 - Wed Jan 30 03:27:10 2008
by Markus Madlener @ http://www.copfilter.org
Ed, KL7UW noted:
> It would be more significant if the antenna was described. I suspect
> if one used a 1000-foot dish it would be quite easy to do!
I know of a number of QRP, single Yagi QSOs on 2M with W5UN (see
<http://web.wt.net/%7Ew5un/mba2003.jpg> & read the primer at
<http://web.wt.net/%7Ew5un/primer.htm>) and KB8RQ (see
http://www.spasalon.com/kb8rq/). In his primer, W5UN notes
> W5UN has worked a couple of stations who were using a single long boom
> antenna and running less than 50 watts, so it can be done. I made one
> such contact with W2RS who answered my CQ. At the time W2RS was
> running 50 watts into a single Cushcraft 32-19 antenna
Along the line of amateur adventures using big antennas, I'll relate a
few things I have done when using large dishes on EME. By large dishes,
we have twice activated the 140' dish at Greenbank, WV (K8HUH & W3IWI/8
calls used) and we have used an 85' dish near Fairbanks, AK (Calls were
W3IWI/KL7 & KL7RA) on several occasions. Here are some notable QRP
1. From both dishes, I have "kerchunked" myself on 70cm FM using
just a HT.
2. From Fairbanks, I ran 70cm AX.25 packet with a small (probably 10
watt) radio & TNC and managed to have a full, legit QSO with
myself (connect, ack, data packets sent "both" ways, etc.)
3. From Greenbank on 13 cm we set the EME DX record with a ZL who
was using his 1 watt exciter after his PA and Driver burned up.
4. From both locations on 70 cm, I worked a number of stations
running under 50 watts with single yagis.
5. Our 1296 MHz QSO from WV with WB5LUA (now W5LUA) was critical to
his completing a 23 cm WAS.
6. W3IWI/8 managed a 70 cm WAC in under 12 hours (i.e. within a
single calendar day). The streak started with Z25JJ for Africa and
ended with several VK6 QSOs.
So some things are pretty easy when you have a big antenna!
73 de Tom, K3IO (ex W3IWI)
N8ABY heard it sometime between 20:30 and 20:45. That is a great site to use for a sanity check on whether a satellite is active or not, except for the occasional erroneous entry.
73, Drew KO4MA
>From: Farrell Winder <fwinder(a)fuse.net>
>Sent: Jan 30, 2008 3:34 PM
>To: AMSAT <amsat-bb(a)amsat.org>
>Subject: [amsat-bb] AO-16
>Could anyone in Eastern part of US confirm that AO-16 is presently active? Nothing heard on pass beginning 20:19 Z Cincinnati.
>Tnx, Farrell Winder, W8ZCF
>Sent via AMSAT-BB(a)amsat.org. 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
You can use PREDICT for this very purpose! You can look days and months ahead to see when a satellite in in eclipse, how much illumination it should receive, etc. It's really slick.
Pick your OS, download, read a bit, and have at it.
Thanks to Bruce WB9ANQ for directing me to this software just a few days ago and to John KD2BD for a great program!
----- Original Message -----
From: "Chris Bloy" <chris(a)photofuture.co.uk>
Sent: Tuesday, January 29, 2008 8:15 AM
Subject: [amsat-bb] Long time eclipse prediction
> Hi All,
> I have never been able to get a straight answer on this one, but does
> InstantTrack or any other program show you the long term
> non-eclispse/eclispe period, or is there a way to calculate this?
> How do we know that PCSAT and UO11 are going to HIT sunlight or not for a
> period of time?
> I can see from Orbitron the realtime, but not anything in the future?
Mark L. Hammond [N8MH]
Just heard a few brief USB syllables on the 1850Z 4 degree pass here, but couldn't make it out. Had a couple of minutes to Eu., but not possible from indoors here. I'm sure a QSO could have been made if I were outside. Oh well, spring is just around a few corners.
Who was that masked man just now? Anyone from across the pond?
EarthLink Revolves Around You.