-bb] Re: 2.4GHz broadband router on satellite?
Maybe Drew KO4MA will reply--but I thought he did some global
listening on 2.4GHz with AO-51 (frequency agile receiver). Seems
like he published some plots in The Journal?
Take home from what I recall--it was very noisy!
Mark N8MH
On Fri, Feb 22
--- On Wed, 27/2/13, John Stephensen kd6...@comcast.net wrote:
Yes, 2.4 GHz was very noisy. AMSAT Eagle was to use a 3.4 GHz
high-speed (0.5-1 Mbps) BPSK downlink.
In terms of noise a 3400-3410 MHz satellite band would have a lot going for it,
unfortunately it isn't a Global
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: 2.4GHz broadband router on satellite?
--- On Fri, 22/2/13, Joshua Abraham jarvi...@gmail.com wrote:
I seem to remember reading about a successful experiment involving high
altitude balloons.
See http://www.nrl.navy.mil/content_images
Hi all,
wifi over long distance is a reality on earth-based point-to-point links,
with distances up to 200miles. The long distance means long latencies, thus
the standard wifi protocol needs to be modified. It exists today
implementations of the modified protocols for the WRT54G router.
To cope
Apart from power budget issues and Doppler the real killer will be the very
high noise level on 2.4 GHz.
In urban areas you can expected to receive strong WiFi signals across all of
2402-2450 almost regardless of where you beam.
Any signals from a satellite would need to be strong enough to
Maybe Drew KO4MA will reply--but I thought he did some global
listening on 2.4GHz with AO-51 (frequency agile receiver). Seems
like he published some plots in The Journal?
Take home from what I recall--it was very noisy!
Mark N8MH
On Fri, Feb 22, 2013 at 10:49 AM, Trevor . m5...@yahoo.co.uk
22, 2013 11:20 AM
To: Trevor . m5...@yahoo.co.uk
Cc: amsat-bb amsat-bb@amsat.org
Subject: [amsat-bb] Re: 2.4GHz broadband router on satellite?
Maybe Drew KO4MA will reply--but I thought he did some global
listening on 2.4GHz with AO-51 (frequency agile receiver). Seems
like he published some plots
Lee and those who have responded so far,
Those are the questions that would need to be answered before even
considering this 'novel' idea.
I use the WRT54GL as a reference since that is what I am familiar with.
The WRT54GL would need to be almost redesigned because of space
radiation conditions
Hello James, I just wanted to throw my two cents in on the protocols. I'm
not sure about the need for AX.25 implementation. The 802.11(Wi-Fi)
standard should server the purpose needed. AX.25 is a considerably limited
protocol. Low speeds, limited error correction, and frankly, it defeats the
Could a gain antenna be incorporated into a gradient boom for aiming?
Roger
WA1KAT
On 2/22/2013 3:06 PM, James French wrote:
Lee and those who have responded so far,
Those are the questions that would need to be answered before even
considering this 'novel' idea.
Could the satellite
utilize a
--- On Fri, 22/2/13, Joshua Abraham jarvi...@gmail.com wrote:
I seem to remember reading about a successful experiment involving high
altitude balloons.
See http://www.nrl.navy.mil/content_images/07Information_Rupar.pdf
73 Trevor M5AKA
___
Sent via
James French wrote:
What are the possibilities of building a satellite that uses a Linksys
WRT54GL router with a modified DD-wrt or HSMM-Mesh software as a store
and forward BBS, to route a received request from one station to another
station, or even to connect to a on board networked camera to
One of the recent 3u DOD sponsored cubes has a S dish for tracking wifi type
tags on containers. I'm not sure how much lick they had with that.
73, Drew KO4MA
Sent from my iPhone
On Feb 21, 2013, at 7:58 PM, Lee Maisel mai...@lobo.net wrote:
James French wrote:
What are the possibilities of
Lee Maisel wrote:
James French wrote:
What are the possibilities of building a satellite that uses a Linksys
WRT54GL router with a modified DD-wrt or HSMM-Mesh software as a store
and forward BBS, to route a received request from one station to another
station, or even to connect to a on board
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