Maxtrac Question
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- sparky2842
- Posts: 30
- Joined: Wed Feb 22, 2006 5:47 pm
Maxtrac Question
I was wondering what the pot on the back of the radio on the heat sink does? Curiosity killed the cat, so before I touch it and regret it, Let me know... Also is there a way to modify for variable power for low and high? The sink gets pretty hot while talking on the ham bands...
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- sparky2842
- Posts: 30
- Joined: Wed Feb 22, 2006 5:47 pm
I suppose its possible to "modify the modification"...
There is a modificaton listed on the Repeater-Builder webpage to make power output control by a trim pot inside the radio.
The intent is to use this mod when using the radio outside of its design band where the radios tend to run "wide open" trying to put out something like 60 watts.
But, I must mention that if you try to run the Maxtracs much below appx half rated power, they get just as hot, but might put out spurs.
So, since the circuits in the radio were not designed for a low power setting, you might not have much luck.
I have had best experience with just setting the power out for about 2/3s or 3/4 rated power, and leave it at that.
That is one drawback to Maxtracs/Radius/GM300's they get HOT!.
There is a modificaton listed on the Repeater-Builder webpage to make power output control by a trim pot inside the radio.
The intent is to use this mod when using the radio outside of its design band where the radios tend to run "wide open" trying to put out something like 60 watts.
But, I must mention that if you try to run the Maxtracs much below appx half rated power, they get just as hot, but might put out spurs.
So, since the circuits in the radio were not designed for a low power setting, you might not have much luck.
I have had best experience with just setting the power out for about 2/3s or 3/4 rated power, and leave it at that.
That is one drawback to Maxtracs/Radius/GM300's they get HOT!.
- sparky2842
- Posts: 30
- Joined: Wed Feb 22, 2006 5:47 pm
Or make a plate to put two small fans on and use the mounting hole in the center of the heatsink. That hole is there for the extended mounting brackets that use a self tapping bolt to secure the back end to the bracket.
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