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I have used my DJ-580t up in the mountains, our camp site is above the lake, and can see the low level repeater down in the valley,  you can not get into it from the lake level.....you can hear it, but can not get into it. Hand held 300 mw, on 440, up to the truck, 580t on 12 volt plug to comet mobile antenna, 1 watt down the hill on two meters/two meters back up and 440 back to the vxr5 at the lake.

 Yes if you get into a long QSO the 580 will get hot.. Have to keep this in your head when using it this way.....the good thing about the 580, it is a rather large ( compared to today's HT`s) hand held and can dissipate a little more heat than the micro talkie`s. There are a some advantages to the old bulky ht`s.


73

Jeff