[NLRS] Killed my amp? Probably

[KB0NLY]

I kinda figured they weren't, which is why I suppose the flood of knockoffs 
is quite fruitful now.  I have a few of the Chinese clones of the 646, two 
of them are installed in a RFC 2-417, they seem to work just fine but it 
remains to be seen just how long they will last.  45w of drive produces 
about 190w after a tuneup of the amp.  So they definitely make some RF, but 
as to how reliable they are over time I don’t have an answer yet.  Of course 
as cheap as they are if they even last a year it was worth it.

73,

Scott KB0NLY


-----Original Message----- 
From: Dr. Gerald N. Johnson
Sent: Friday, September 04, 2015 10:38 AM
Cc: nlrs at mailman.qth.net
Subject: Re: [NLRS] Killed my amp? Probably



Motorola isn't making RF transistors these days. They spun that
operation off to Freescale. NXP began to make similar parts along with
MACOM.

73, Jerry, K0CQ

On 9/3/2015 5:01 PM, KB0NLY wrote:
> The problem with RF Parts is the last time I bought a 646 from them to
> rebuild one of these RFC amps it was an offbrand copy as well. I don't
> think the real deal Motorola 646 is produced anymore?
>
> I have rebuilt quite a few of these RFC's now, I used to have eight of
> them in the shack from eBay and hamfests that were all killed with too
> much drive.
>
> 73,
>
> Scott KB0NLY
>
>
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