FT-817 Schematic and Block Diagrams. These have
been converted from the .PDF documents originally found on the FCC web
site into bitmap .GIF at an equivalent resolution of 300dpi.
These
images have also been cropped (without removing any information)
to reduce their bitmap size. Note: The original .PDFs
have
since been removed from the FCC web site.
Note: Due to their large bitmap size, it may not be
possible
to display and/or print some of these images directly from your
browser.
You may need to save the image to disk and print using another
program.
Most images are best printed in landscape mode.
A note concerning some of the larger images (such
as
the "Panel Unit"):
If you print some of these drawings on standard (e.g.
8.5"x11" -
approx. 22x28cm) paper, you'll likely need a magnifying glass to read
it
- if it's legible at all!
A tip from a reader:
"...[A] readable copy of the Main unit
schematic [may be printed by]... chang[ing the] pixels per inch from 72
to 250 [in an image editing program]. This allowed me to upload it to
Staples's website and have an Engineering Print done on 24" X 36"
paper. Total cost was about $3.50."
Thanks Alan!
If you can't print on larger paper, then I'm afraid that you'll
have to be resourceful - possibly printing it on several pages using a
drawing program.
Important note for users of Internet Explorer(tm):
Due to a bug in some versions of Internet Explorer, some of
the
diagrams
may show up as blank images. The workaround is to use a different
browser, or you may right-click on the link of the desired
image,
save it to disk, and look at it using an image viewer. In
other
words: The link does work - it's the browser that doesn't!
The diagrams:
Block Diagram (342kB) -
This
diagram
show the general signal flow and interconnection of the various modules.
Main Unit (1276kB) - This
includes the
RF, IF, and audio stages for both TX and RX, as well as power supply.
Panel Unit (400kB) - Shows
the
CPU,
display, and some of the audio processing. This drawing does
not
print well on A-sized paper!
PA Unit (373kB) - Shows the
highpass,
lowpass, forward/reverse RF detection, and TX stages (except the final.)
