ARLA/CLUSTER: Será que o seu receptor é mesmo bom? Radioamadores respondem em video.
João Costa > CT1FBF
ct1fbf gmail.com
Terça-Feira, 31 de Dezembro de 2013 - 12:58:22 WET
Ham Radio Noise Power Ratio Testing
Episode 117 of *HamRadioNow* covers the presentation on receiver testing
given at the TAPR-ARRL amateur radio Digital Communications Conference
How good is your receiver? Inquiring hams want to know.
In this talk from the 2013 ARRL and TAPR DCC, *Adam Farson VA7OJ* describes
a technique used years ago by the telecom industry to generate a strong
block of noise, notch it at a receiver's IF, inject it into the receiver
and see how much of the junk outside the IF was getting through to raise
the noise floor (at least that's how I understood his talk!). The test
equipment to do this used to cost many thousands of dollars, but like much
of that old, obsolete stuff, you can pick it up cheap if you know where to
look.
So, how good is your receiver? Test it yourself!
Adam's web site is http://ab4oj.com/
Watch HamRadioNow Episode 117 from the DCC: Noise Power Ratio Testing
http://www.youtube.com/embed/_98_FRkrG10?rel=0
Ham Radio Now http://HamRadioNow.tv/ <http://hamradionow.tv/>
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