[DSP-10] DSP-10 Completion

[Richard Ewing]

Hey Jess,

I made a revised (based on the original Steve Bible doc) command summary 
sheet.

I think you will find it most useful and you can download from:

http://home.teleport.com/~rewing/dsp10area.htm

CONGRADS.

W7CQ has QSO'ed with PUA on 4 nanowatts. That is 4n into the 
feedline.   While the direct distance is only in the order of 43 miles +/-, 
just consider the possibilites.

73  de KO7N CN84ia


At 07:34 PM 8/3/2002 -0400, W4mvb@cs.com wrote:
>Good Evening to All,
>
>I would like to add my comments to those already posted here.  What a great
>project!  I finally completed my unit yesterday after several months of
>delays (most of which were not related to the DSP-10).  I've spent all day
>playing with it.  What a super toy.  Thanks to Bob for all his hard work and
>to the TARP guys who made the whole process enjoyable.
>
>I changed C117 from 10pf to 6.8pf during construction as suggested by KO7N
>and W7CQ.  As suggested by Bob, I also connected a ground from the R105/C113
>junction and adjusted L102 for 123.5 Mhz during preliminary checks.  When I
>installed the EZ lite board the PLL locked from below 144 to above 148
>without touching L102 at all.
>
>The only problems I encountered were self inflicted.  One of those was a
>pretty big deal.  Midway through checkout I lost PLL lock.  After flailing
>around in the dark for a while and changing U104 twice, (once on speculation
>and once because I blew it up with a meter lead)! Common sense set in and I
>ran diagnostics.  The serial diagnostics showed me that I had lost the serial
>data stream (FL0) at pin 33 of P3 on the EZ lite board.  A new EZ lite board
>fixed the problem -- though the pain persists!
>
>Apparently one of the things that you don't get with the new boards (in
>addition to the dos software) is a user's manual.  I got the impression from
>a reply I got from a previous post that user manuals came with the earlier
>models.  Is it practical, and would someone be willing, to make a copy of a
>page or two from the manual which would allow me to diagnose the loss of FL0?
>  The processor still works OK.  I get the blinks on the LED and everything
>else seems to work.  If the signal comes from the CPU it may be an exercise
>in futility anyway.  I'm not sure I'm up to changing a 128 pin flatpack!
>
>Thanks for the help and the bandwidth and again my thanks for a great project.
>
>73 de Jess - W4MVB
>
>
>
>
>--- StripMime Report -- processed MIME parts ---
>multipart/alternative
>   text/plain (text body -- kept)
>   text/html
>The reason this message is shown is because the post was in HTML
>or had an attachment. Attachments are not allowed.
>Please post in Plain-Text only.---
>_______________________________________________
>DSP-10 mailing list
>DSP-10@mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/dsp-10