[VHFcontesting] [Mw] How do you know if an MRF-247 is real?

[Mike Benonis]

This is a good question that I had as well.  I just bought a 180W 2m amplifier that I know will need a new MRF247, and I'm wondering whether to buy one or two on eBay, or get the new 2SC series replacement part as a pair from RFParts.com...

Mike


On 14 Apr 2011, at 21:01 , John T Rose wrote:

> It isn't just counterfeit parts to watch out for.  At times a large
> quantity of the parts that failed to meet specification gets out to the
> market.  Some thing I am suffering through at work.  An older design with
> an IC that was last made 6 years ago.   Some of the rework people cringe
> when I head in their direction!  
> On Thu, 14 Apr 2011 15:22:14 -0500 "Mike & Becca Krzystyniak"
> <k9mk at flash.net> writes:
>> I looked at the item on eBay and they pass the common sense test but 
>> I have
>> heard rumors of counterfit parts coming from China where performance 
>> was off
>> from the branded part.  
>> 
>> The MRF-247's were built in Malaysia from 1999 through 2003 and the 
>> last
>> ship date was around week 47 of 2003.  
>> 
>> So if these are legitimate MRF247's they were made in the one of the 
>> last
>> production runs.  
>> 
>> 73's  Mike K9MK
>> 
>> 
>> 
>> -----Original Message-----
>> From: microwave-bounces at lists.valinet.com
>> [mailto:microwave-bounces at lists.valinet.com] On Behalf Of John 
>> D'Ausilio
>> Sent: Thursday, April 14, 2011 2:45 PM
>> To: Microwave; (Radio) VHF Contesting
>> Subject: [Mw] How do you know if an MRF-247 is real?
>> 
>> for instance, item 180557984917 on ebay .. too good to be true? 
>> I've
>> got a Mirage and a TE, both with bad transistors, that I'd love to 
>> get
>> working again .. I wouldn't touch the "UK" variety, but how does 
>> one
>> tell if a Motorola-marked part is real or not?
>> 
>> de w1rt/john
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> 
> 
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Best regards,

Mike Benonis
mike at benonis.net
KI4RIX