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NorthPoint NT4HP, NT6HP
- Thread starter NorthStar
- Start date
I sure haven't seen any yet. The one burning question I have about them is do they use a ceramic shoulder washer to hold down the metal tab on final and driver transistors?
The last North Star models, the 4000 and 9000 in particular, used a soft nylon plastic washer to hold these parts to the heat sink.
Until you get it hot, all is well. Works just like the hard ceramic washer that (nearly) everybody else uses.
Get it a little TOO hot, and the nylon plastic softens. The mount screw slacks off, and the final (or driver) pulls away from the heat sink. Result? POOF !
This seemed like a petty thing to gripe about, once North Star was out of business for good. Made me wonder if they knew that when those last models were being made and distributed? Sort of a "last day at work, who cares?" kind of thing? Maybe?
Don't know.
Sure will be disappointed if I see these soft thermoplastic washer holding down the driver and final in a North Point radio.
73
The last North Star models, the 4000 and 9000 in particular, used a soft nylon plastic washer to hold these parts to the heat sink.
Until you get it hot, all is well. Works just like the hard ceramic washer that (nearly) everybody else uses.
Get it a little TOO hot, and the nylon plastic softens. The mount screw slacks off, and the final (or driver) pulls away from the heat sink. Result? POOF !
This seemed like a petty thing to gripe about, once North Star was out of business for good. Made me wonder if they knew that when those last models were being made and distributed? Sort of a "last day at work, who cares?" kind of thing? Maybe?
Don't know.
Sure will be disappointed if I see these soft thermoplastic washer holding down the driver and final in a North Point radio.
73
Northstar I have sold a few 3 series. The customers seem happy. I had a few led problems. That is about it. Same with the 9 series. Stan seems like a stand up guy and he has been very helpfull.