N3ZI
DDS VFO
Detailed photos of Full Kit
The photo on the left show the assembled full version of the kit with
the
exception of the output filter components.
The photo on the right shows the same PCB mounted in an altiods
tine. More
Altiods photos here
The switches, LCD connector, and Rotary encoder can be mounted on the
front or back of the PCB depending on you installation.
The black connector in the upper right is something from my junkbox,
and is not supplied with kits. It's easiest to simply solder the
power wires directly to the PCB. Or just use whatever power
distribution you have in the rest of the radio. But that
connector is available from All Electronics and Shop EIO, but you have
to cut off the side pin then it fits in the PCB, it's a 2.1 mm coaxial
power connector. I am supplying the RCA connector in the lower
right, though in many cases you won't want to use it, just solder your
coax directly into the PCB. In the extreme upper right you can
see the RS232 cable connection, in this case I solder directly to the
PCB, but you could also connecterize it with a 3 pin header(0.1 in sp)
on the PCB
The above photo shows the complete assembly with LCD module, and Rotary
encoder on the back,
The photo below shows the same assembly from the back.
Above back view with LCD module removed.
You will see the LCD connector mounted on the back. You can also
mount it on the front of the PCB, but you will be reversing the odd and
even pins. This is not a real problem, as long as you keep that
in mind when connecting to your LCD. Double check your wiring
before applying power because it's easy to reverse things, and
reversing pin 1 and pin 2 will cause power to be applied in reverse
which will almost certainly damage the LCD.
