Ain’t technology wonderful!
From:
xylo-sdr-bounces@lists.ae5k.us [mailto:xylo-sdr-bounces@lists.ae5k.us] On Behalf Of KD5NWA
Sent: Tuesday, December 13, 2005
7:19 PM
To: Xylo-SDR
Discussion
Subject: Re: [Xylo-SDR] Xylo
I think then that that dark layer in the middle of the board is glue.
I had a email from Jean this morning, and he is going to be making a Cyclone II
board next year.
I was looking at some of the other Altera FPGA's and wow! The Flex series has
up to 26K LEs, runs at 1 GHz, and up to 1000 user I/O pins. I bet that one is
more than $20 Just the board to hold this 1506 pin IC will cost more than $20.
At 04:50 PM 12/13/2005, you wrote:
Guys
Talked with Jean today, all his present boards are 2 layers, carefully routed.
Eric
From: xylo-sdr-bounces@lists.ae5k.us
[
mailto:xylo-sdr-bounces@lists.ae5k.us] On
Behalf Of KD5NWA
Sent: Tuesday, December 13, 2005
7:57 AM
To: Xylo-SDR
Discussion
Subject: Re: [Xylo-SDR] Xylo
Hard to tell with these old eyes but all I see is one additional layer between
the two outside layers , it appears to be mostly a power layer, what I can see
is a solid layer. Making it for a total of three layers.
The board consist of two fiberglass layers glued, one side is mostly ground
plane and the other side traces and most components, although there are
components on the bottom also.
If I get a chance to go to the Springdale
facility toy, we have a camera that can focus to 1 mm, I'll send you some
pictures if I go there today.
If I can't go maybe someone can see it better than I can.
At 05:06 AM 12/13/2005, you wrote:
Just
out of curiosity, how many layers is the Xylo PCB?
Leon
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Cecil Bayona
KD5NWA
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"I fail to see why doing the same thing over and over and getting the same
results every time is insanity: I've almost proved it isn't; only a few more
tests now and I'm sure results will differ this time ... "
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Cecil Bayona
KD5NWA
www.qrpradio.com
"I fail to see why doing the same thing over and over and getting the
same results every time is insanity: I've almost proved it isn't; only a few
more tests now and I'm sure results will differ this time ... "