Hi Folks,
tried to catch ISS with my TH-D7 + Rubber Duck on Office's terrace in JN33MO. The pass was very good, most of the time over 30deg. Just heard voice traffic (one word fragment, guess wa Garriot ending a contact) at AOS, then nothing.
Anyone was succesful with that equipment?
Best 73s
Simone IW1FYV/F
The gain of a stock rubber duck antenna is usually minus 12 to minus 9 dBd gain. The average car 1/2 wave dipole is Zero dBd gain.
More gain, better results.
--- On Thu, 10/16/08, Simone T terrando@gmail.com wrote:
From: Simone T terrando@gmail.com Subject: [amsat-bb] ISS, 9:10 UTC PASS To: "Amsat-Bb@Amsat. Org" amsat-bb@amsat.org Date: Thursday, October 16, 2008, 5:23 AM Hi Folks,
tried to catch ISS with my TH-D7 + Rubber Duck on Office's terrace in JN33MO. The pass was very good, most of the time over 30deg. Just heard voice traffic (one word fragment, guess wa Garriot ending a contact) at AOS, then nothing.
Anyone was succesful with that equipment?
Best 73s
Simone IW1FYV/F _______________________________________________ Sent via AMSAT-BB@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
On Thu, 2008-10-16 at 03:16 -0700, MM wrote:
The gain of a stock rubber duck antenna is usually minus 12 to minus 9 dBd gain. The average car 1/2 wave dipole is Zero dBd gain.
More gain, better results.
I had a thumping signal yesterday with my homebrew J-pole. Nothing more. I thought I might have used the Yagi, but that would probably have only been worthwhile for catching the very ends of the pass. As it was, with my antenna about 12' off the ground in a suburban back garden with trees and buildings around, I was getting full quieting at 15 degrees above the horizon!
http://www.gjcp.net/~gordonjcp/dualbandjpole.pdf
Here's a copy of WB6IQN's dual-band design (mirrored because I don't want to cane the author's bandwidth). I built the single-band version, and it tuned up perfectly at 144.9MHz when built as described - I've now built three, one on a pole in my back garden, one that I gave to a friend to listen to the local repeater with (along with an old Icom IC-22A - must ask him if it's got a 145.8 crystal!) and one to stuff into my laptop bag and take to work. You'd actually have to try to get it wrong.
HTH, Gordon
participants (3)
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Gordon J. C. Pearce MM3YEQ -
MM -
Simone T