Superstar 3900 users, please help!

[Jill]

Hello. I've got myself a brand new superstar 3900 but am quite concerned. Is it normal for the mic socket to get slightly warm after about 30 mins or so of me using the rig? It happens on am and fm but not ssb. The hottest part of the radio seems to be where the 2 screws are at the back on the mic socket side of the radio. I'm quite worried and wonder if i should return it. Feedback from ss3900 consumers is welcome.Ta muchly.Jill

 

[MisterFatty]

The thing you have to consider here is the chassis of that radio is aluminum, and for a reason, it acts as a heat-sink, and conducts the heat away from the radio. Slightly warm is not an issue....

 

[hotrod]

mine gets luke warm,but not too hot to touch.imho ssb doesnt make it
heat up cause ssb doesnt use a carrier.where am/fm does

 

[Damo666]

Thanks for the feedback guys. I've resorted to using a fan at the rear of the unit behind the power lead and it runs much cooler now.

 

[mechanic]

Another late post by me but here goes..... The power regulator transistor and the audio amp is located on the mic side of this rig and others like it. AM and FM use more current and this area will heat up faster with these modes. SSB current does not pass through these devices as much so there is less heat produced. A fan is a great choice for cooling!

mechanic