I use an Icom IC-2300 as my Winlink Packet node radio. As one might imagine, the radio can get quite hot when in use sending data and the Icom IC-2300 is no exception. I have the radio powered down to mid-power (25W) and the radio itself has a huge heat sink, but no active cooling.
Here is what I did to help my Icom IC-2300 to stay cool.
I acquired a 12v fan and an electronic thermostat-controlled switch.
Used thermal paste and industrial strength glue to attach the probe of the thermometer to the heat sink of the radio.
Connected the cooling fan and soldered/wired it to the thermostat switch.
Here is a video of the setup in operation on my Winlink Packet station. The fan kicks on at 41 degrees C and goes off at 39.5 degrees C. This can be adjusted on the device. These parts came from Amazon and the cost was very inexpensive. I thought I would share in case anyone might want some ideas on how to keep their packet station cool. This one functions well and keeps the radio cool. --- Thanks - KB4TAD