Kanga Products Bassinet, Manual And User Manual

Page: 10 / 26

Rooster CW Transceiver Rev3 Page 10 of 26 22
nd
Nov 2023
Solder the centre pin first and check the alignment of the
transistor it should sit nice and square on the board. When
your happy it looks right, solder the other two pins and
trim the leads flush.
Now we can test the sidetone
circuit.
Plug in the headphones and
key.
Next the DC supply.
Tap the key and you should hear the sidetone. IF you wish you can test the muting circuit
too at this time. Perform the ‘Buzz’ test again but while listening to the ‘ Buzz ’ tap the key.
The sidetone should replace the buzz.
Stage 4 Mixer
The Rooster uses an active mixer circuit that much better performance than the old FOXX3
ever could offer. We need to fit the 8 pin socket for this chip.
The socket if you look carefully has a
small notch on one of its shorter
edges, this notch must be next to D7
on the PCB. Make sure that the
socket is flush down on the board. I
solder one pin first and double check
before soldering the other pins.