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Now connect the remote rig to a dummy load, no need for an antenna on the Rooster,
transmit a CW signal on the remote rig (set the power level as low as you can).
Set the RIT control about half way and the Rooster should be hearing the transmitter, adjust
the RIT control clockwise and the pitch should change, it should go very low as the control is
almost fully clockwise, ideally a point should be heard when the tone stops altogether. This
point is zero beat.
Congratulations if this is all working, apart from the PA transistor and the RX/TX LED the
Rooster PCB is complete.
Stage 11: Fitting the PA Transistor and rear panel.
First find the heatsink mounting pad. It should be noted that the type of transistor does NOT need a
mounting bush BUT does still need an insulator pad so make sure you use it,
Cut about 3 or 4mm off the bottom of
the pad. Before you fit the pad put a
small amount of clear tape on the top
edge of the pad, use that to hold it in
place. Put the pad on the inside of the
rear panel so the mounting hole in the
pad is in line with the mounting hole
on the panel.
Rooster CW Transceiver Rev3
Now fit the rear panel on the back of the PCB, for now use the
larger BNC nut and tighten the rear panel to the board.
Only tighten finger tight for now, drop the transistor in place so
the metal side of the transistor is against the insulator pad,
pass the M3 Black bolt through the rear panel and through the
hole in the transistors body and use the M3 nut to attach the
transistor. Do not fully tighten the nut yet.
Page 18 of 26
You should be able to
bring the Rooster onto
7.030Mhz on the remote
radio.
The tuning will move
slightly when we fit the
PA transistor later as the
loading on the oscillator
will change but for now
this will be ok.
nd
22
Nov 2023
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