Kanga Products Bassinet, Manual And User Manual

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Rooster CW Transceiver Rev3 Page 17 of 26 22
nd
Nov 2023
the solder again on the lug and reposition, when happy solder the other lug and then solder
the tacked lug fully. Again, be careful this will be hot for some time afterwards.
Stage 10: Testing and Alignment
Time for some testing and alignment.
Like all the tests so far, I would recommend a current limited power supply, up to now you
could expect a max current of 25mA, now you will need to set the limit up a little to 100mA
as we have the driver stage installed and will be testing the transmit chain.
For this test you need another transceiver, antenna, dummy load (advisable), headphones
and key.
Connect the remote transceiver up to an antenna or even just a short (1m length) wire will
do fine,
Monitor 7.030Mhz on the this set. Select a wide filter BUT be sure you put the radio in CW
mode (Important!)
Connect the Rooster to the power supply with the key, antenna and headphones connected.
You should now hear at least band noise, if someone is operating around the Roosters freq
you will most likely hear them too.
This is a direct conversion receiver, this means the internal oscillator runs at the frequency it
is receiving, the side effect of this is that the oscillators signal can be heard on a receiver
placed near it. If you can hear a tone on the remote rig don’t worry, that’s normal and not a
fault.
Now key the Rooster, you should expect the current to increase to about 60-80mA, tune the
remote radio to find the signal as you key, it maybe a few 100Hz off either direction.
Once you have found it retune the remote radio to 7.030Mhz
Now ideally a ceramic trimer ( I use a small flat blade screwdriver myself) adjust the red
trimmer on the Roosters PCB while holding down the key.