Custom Products from Masters Communications
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Custom Products from Masters Communications |
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Top photo of the SC-75 PC board (click for a larger view).
Bottom photo of the SC-75 PC board (click for a larger view).
Assembly:
If you purchased our kit, refer to the parts list and make sure you have all of the components
you need to build the kit.
Click here
for SC-75 Parts List.
Click here
for the SC-75DW Parts List.
Assembly can be done by personal choice, but you may find it easier to install the resistors and smaller (shorter) components first building toward the tallest.
Install all resistors. There are a few resistors that are easily transposed. Make sure you don't mix up resistors with the same colors, but arranged differently. Some resistors with the color violet look dark blue. If in doubt, use an ohm meter to verify the value before soldering it in place.
Install the diodes and shorter capacitors, observing polarity on all diodes and polarized capacitors! The square pads are the banded end of the diodes and the + of the electrolytic capacitors. Small capacitors are identified as follows: "102" = 1000pF or 0.001uF, "103" = 0.01uF, "104" = 0.1uF, in other words the first two digits are the value and the third digit is the number of zeroes you add to determine the value.
Then install the transistors (flat to flat on silkscreen). Install the 6-position DIP switch. See photo for DIP switch package orientation. The word "ON" goes towards the DB25 connector.
Install the voltage regulator ICs and crystal. Then install the LEDs (short lead to the square hole) and the three pin headers, taller electrolytic capacitors, followed by the DB25F.
Third Party Compatible Projects:
MABEL is an interface and software that
allows analog control of the Yaesu DR-1X repeater and access to the AllStar VOIP network
with the Raspberry Pi3 and AllStar Asterisk. (Offsite Link)
Information on the FX465.
Click here
to download a manual for the FX465-D5
Email
Kevin Custer for support.
Product of Kevin Custer - W3KKC, all rights reserved.
Specifications may change without notice.
Images property of Kevin Custer - W3KKC
Board layout by Chuck Kelsey.
HTML April 24, 2019, W3KKC All Rights Reserved!