[hpsdr] OZY Startup Info

John Koster w9ddd at tapr.org
Mon Jul 17 09:35:34 PDT 2006


Doesn't cost anything to put both A and K if space permits.  That would 
make all the boards the same?

Then we only have to keep the builders on point as to what parts they are 
getting.

Currently the only part we have in bulk at the TAPR warehouse it the CK170
in red and green.  As mentioned before P/N change was an issue with
getting enough from one supplier vs. 2 or 3 to get enough.  The abreviated
specs I used to compare didn't mention markings.  Who'd thunk marking the
cathode had fallen out of practice.

On Mon, 17 Jul 2006, Lyle Johnson wrote:

> ***** High Performance Software Defined Radio Discussion List *****
> 
> > To summarize:
> > 
> > The CK170 part has the ANODE marked.
> > 
> > The CK171 part has the CATHODE marked.
> > 
> > Don't ask me why LITEON cannot be consistent in their marking...or why
> > other manufacturers cannot use some standard...  I always do what Phil
> > H did - use a DMM to check polarity before soldering to be sure.
> 
> Speaking of consistency, we need to be consistent in how we mark LED 
> polarity on the silkscreen.  If we are going to standardize on 0805 LEDs 
> and an "a" at the anode, so be it.  I normally associate special marking 
> at the cathode end, with a thick bar, for example.
> 
> I bring this up only because I am adding LEDs to Janus. Sasquatch will 
> probably have a few as well, just because...
> 
> 73,
> 
> Lyle KK7P
> 
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-- 
73,
John, W9DDD


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