|Linear Power Supply. If you have a newer Icom, read this.
||Time Owned: 0 to 3 months.
|Hi. I recently picked up this nice Linear Supply. If you have a newer radio, it will work fine, but not in the same matter as the older rigs, from the time period when it was designed.|
I have a 745 I bought new. When the PS-55 is plugged into it, the PS comes on when the radio's power button is actuated. OK.
However, when used with my 706g or my 756PRO, when the PS and either radio is connected, as soon as you plug into 120VAC, the PS turns on, even if the radio is off. A couple of minutes looking at the schematics (with a BIG magnifier!! ha ha), shows that the newer radios have a jumper in the radio, on the PS connector. However, the 745 actually has a switch that turns on the PS.
Why? I can only guess Icom didn't want the newer radios switching on the PS.......
It doesn't matter. The PS works perfect and allows the 756PRO to output the full 100W without any effort.
I did put a very small muffin fan on the bottom of the heatsink. Now, it runs cold and I haven't heard the internal fan turn on since I added the fan. No, you cannot hear the fan running.
These PS are plentiful and affordable.
Have fun, the sunspots are comming!!!!