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CTCSS Encoder for those Oldies.
This is a neat project.
Arduino Nano based. Schematic as well as the Sketch for the Nano.
And some pics of my version.
Share ! Get a friend interested.
Ronnie.
VE3NLS
Uploaded files:
Hi Ron, great idea and thanks for leading the 'charge' on this. The forum should be a great spot to exchange ideas and the one you shared should be interesting for all the hams out there that want to operate their older gear. Very eloquent solution!
73 Don VE7DXE
I have a couple more projects to post soon.
Thanks Don for this great site.
Ronnie
VE3NLS
The final version for this old Kenwood TR-7930 VHF FM Transceiver.
LCD display with the guts tucked inside. This one is powered by the 5VDC to the Control Logic board. No need for a regulator and wasted power.
The original Tone unit was a TU-79. On it you had to cut diodes in a matrix to select the code required. With this design set a default code or use the up down to change when required.
Approx 40MV output of tone into the Discriminator input of this radio works perfect. No loud tone through the repeater.
Don is not able to post the actual SKETCH or a ZIP copy of it. So if anyone wants the actual SKETCH for the Arduino IDE program, contact me and I will e-mail it to you.
Ronnie
VE3NLS
T
Uploaded files:
The Arduino NANO Sketch's have been uploaded. Don fixed the issue.
CTCSS.ino is for the Version with the OLED screen.
CTCSS1602LCD2 is for the 1602 LCD Screen and it the code defaults to a PL of 156.7hz. Local for my area.
Thanks Don.
Ronnie
VE3NLS