[hpsdr] HOLY COW - Janus and Ozy board layouts are WRONG!

[Eric Ellison]

Guys

 

Well, I'm easy. Whichever works out the best for everyone, however, I'll
drop back to a group buy on the Rose-Bopla "Build-a-Box" which I researched
in detail before we changed to dropping the (now Atlas) right into a PC
enclosure and using the ATX power supply for power. Just need 4 stand-offs
for the PC solution. 

 

Here is the Rose-Bopla I priced at about 20 bux, custom cut to exact 100 mm
depth (or more for easement of Mb). I think the endplates were 2 bux. Custom
cutting to size was $1 a box.

 

http://www.rose-bopla.com/Prod_Pgs/BAB/Prod_02_Custom_BAB_0706.htm

 

Many other euro case options were discussed including $200 - 19" relay rack
Vector. Many other styles also including instrument cases.

 

The real drawback to this design is you have only 1 edge for all your
outside world connectors. 

 

Thanks

Eric

 

 

  _____  

From: hpsdr-bounces at hpsdr.org [mailto:hpsdr-bounces at hpsdr.org] On Behalf Of
Ray Anderson
Sent: Wednesday, May 24, 2006 7:46 PM
To: hpsdr at hpsdr.org
Subject: Re: [hpsdr] HOLY COW - Janus and Ozy board layouts are WRONG!

 

>While the layouts may be wrong for a PC they are right for a standard rack
mount (not pc) .
>If the connectors are moved adjacent to the Din connectors you will now
ONLY have a PC  mount.
>Not a board which may be mounted in either case (chassis).. VME and cPCI
all have their boards mounted with connectors opposite >the Din...They seem
to still work..The company I work for, DRS-SS makes a VERY good living using
those type of boards.
>Contrary to what Alex mentioned ATLAS may still be mounted in a PC in the
normal manner allowing the boards to be inserted and >removed without
removing ATLAS with the addition of a simple harness to the back connector.
>If it is absolutely necessary to make these boards "PC" only then at least
KEEP the current designs as an alternate for the rest of >the world...and
the Antarctic.

>No I don't have a SDR-1000. I have no vested interest in either method. And
no I wasn't here at the beginning. I do have a strong >interest in SDR and I
just don't think a mistake should be compounded to exclude other uses.

>Peter Hughes N7BMG/3

 

 

I tend to agree with Peter's comments. Depending on whether the i/o
connectors are located opposite the DIN or on the adjacent side from the DIN
the boards will be optimized for different uses. Personally, my goal is to
put together a compact stand alone portable rig that doesn't depend on an
external PC. To than end, I think a more compact housing can be found/built
that is not a PC specific chassis.

 

The use of a PC chassis certainly will simplify some mechanical issues and
very well may be preferred for some applications. 

 

I back the proposal to fab at least some of the Janus and Ozy boards  with
the connector opposite the DIN configuration (as they are presently laid
out). A second layout could always be done to move the connectors by those
so inclined (open designs encourage derivative works).

 

 

Whatever the ultimate decision turns out to be I can go with it, but for my
particular application I like the 'WRONG' layout .

 

 

73   Ray   WB6TPU

 

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