COLLINS 490T-1 AUTOMATIC ANTENNA TUNER |
Revision 1: February 2010
Updated 115 V / 400 Hz supply June 2010
By Dominique F1FRV
This automatic antenna tuner is made for 2-30 MHz. Defined by COLLINS for 650 Watts (-55 to +55 °C @ 30 000 feet). It can be used up-to ~1kW in amateur service.
RF power requirement for tuning is ~ 40 Watts.
Power supply is 115 V / 400 Hz ~65 VA. 
If you dont have a 115V 400Hz supply, it is easy to make one. See in downloads.
Some pictures
Place the 3 manual parts in same directory, and run the .exe.
You can also download the files necessary to make the PCB:
Dominique - f1frv@sfr.fr 
OR 