<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><div style="direction: inherit;">I filter Ron, he's a drunk.</div><br>Sent from my iPhone</div><div><br>On Dec 9, 2016, at 16:49, Jon Pearl - W4ABC <<a href="mailto:jonpearl@tampabay.rr.com">jonpearl@tampabay.rr.com</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<p>Here's Ron's response to Bryan's post of the same subject on the
TARC reflector:<br>
</p>
<p>Here couple spec anal test of my UV5R on high power, one on
2m/VHF and the other at 448 MHz/UHF.</p>
<p>The 2nd harmonics are over 40 db down.</p>
<p>I think in the YouTube video the spec anal was being over loaded,
a common mistake made when testing a device. To check this one
should attenuate the signal to see if the ratio of the fundamental
to harmonic levels change. If after putting in 10 db attenuation
and the fundamental reduces by 10db, but the harmonic say by 30 db
this would indicate overloading the spec anal front end and the
harmonics are generated inside the spec anal.</p>
<p>We have seen the test the ARRL has done on these Chinese radios
and the results aint all that good. I am sure yur UV5R would show
different results, some better, some not better. What can we
expect from a $30 HT, hi.<br>
</p>
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<div id="Signature">73, ron, n9ee/r a know code Extra<br>
<div><br>
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<div>Ron Wright, N9EE/R
<div>BSEE</div>
<div>Micro Computer Concepts</div>
<div>352-683-4476</div>
</div>
<div><a class="moz-txt-link-abbreviated" href="mailto:mccrpt@tampabay.rr.com">mccrpt@tampabay.rr.com</a><br>
<br>
<N9EE.jpg><br>
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<div class="moz-cite-prefix">On 12/8/2016 1:43 AM, Bryan Fields
wrote:<br>
</div>
<blockquote cite="mid:b4d6a042-3927-4c41-a98f-e3abe66daf38@flscg.org" type="cite">
<pre wrap=""><a class="moz-txt-link-freetext" href="https://www.youtube.com/watch?v=Vn_jKSJXK5U">https://www.youtube.com/watch?v=Vn_jKSJXK5U</a>
This is some testing for the harmonics and spectral purity of the popular
Baofeng UV-5RA radio. This failed both amateur standards and commercial (part
90) standards for harmonic suppression.
I bought this off Amazon this week for 25 or 30 dollars. It's ok to receive
with, but it's in no way legal to use for transmit.
73's
</pre>
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