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.
images have also been cropped (without removing any information)
to reduce their bitmap size. Note: The original .PDFs
since been removed from the FCC web site.
Note: Due to their large bitmap size, it may not be
to display and/or print some of these images directly from your
You may need to save the image to disk and print using another
Most images are best printed in landscape mode.
A note concerning some of the larger images (such
the "Panel Unit"):
If you print some of these drawings on standard (e.g.
approx. 22x28cm) paper, you'll likely need a magnifying glass to read
- 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."
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
Important note for users of Internet Explorer(tm):
Due to a bug in some versions of Internet Explorer, some of
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
save it to disk, and look at it using an image viewer. In
words: The link does work - it's the browser that doesn't!
Block Diagram (342kB) -
show the general signal flow and interconnection of the various modules.
Main Unit (1276kB) - This
RF, IF, and audio stages for both TX and RX, as well as power supply.
Panel Unit (400kB) - Shows
display, and some of the audio processing. This drawing does
print well on A-sized paper!
PA Unit (373kB) - Shows the
lowpass, forward/reverse RF detection, and TX stages (except the final.)