[TenTec] OT: Chinese Amplifiers

[geoffrey mendelson]

On 5/28/2014 10:06 PM, Robert wrote:
> My concern is the spectral purity. I know it may say it meets "bla bla" but from my experience that is just text printed on a label.  Yes the label is required for the item to be sold in the US but does it really meet the requirements?  Two current and popular transceivers I've recently repaired & tested do not meet spectral purity.   Yet both have labels indicating they do conform.
>
> Buy the crap radios & amps but don't complain about crap performance.  After all one gets what they paid.......not much.


The Chinese certifications are self certifications. The company submits 
a report that their device complies and if the data is correct, then it 
is certified. NO ONE every checks to see if the device sold matches the 
one in the report.

Actually I think the FCC does now does that too.

For example, the BAOFENG UV-3R and UV-5R were certified as passing part 
90 specs. Sort of. They pass all of the spectural purity, on frequency, 
etc tests, but no one bothered to check if you really could lock it in 
channel mode. You can't, so all of them are field programmable.

Geoff.

-- 
Geoffrey S. Mendelson 4X1GM/N3OWJ
Jerusalem Israel.