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@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@lists.valinet.com
>> [mailto:microwave-bounces@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@benonis.net
KI4RIX
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