Fwd: [QRP-L] "Simple & Accurate Power Measurement" presentation online this week on Teamspeak (Tuesday 8pm EDT)

This is timely concerning the power measurement thread.
     Kevin.  KD5ONS


-------- Original Message --------
Subject: [QRP-L] "Simple & Accurate Power Measurement" presentation
online this week on Teamspeak (Tuesday 8pm EDT)
Date: Tue, 20 Mar 2012 01:13:06 -0400
From: George N2APB <[hidden email]>
To: <[hidden email]>



This week¹s session of Chat With The Designers is tomorrow evening
(Tuesday), starting at 8pm Eastern (0000z) on Teamspeak.

The topic is "Simple&  Accurate Power Measurement² ...

>  We've previously covered the very popular topic of Power Measurement
>  Techniques and the wide range of equipment and projects available to us
>  homebrewers.  But this time we're going to focus on a very practical example
>  and chronicle a solution path that could well pan out for you.
>
>  Many of us have a simple, homebrew power meter circuit that often displays
>  power readings to a tenth of a watt , such as 0.1 watt, or 5.2 watts.
>  Oftentimes this is sufficient for rough estimation of one's output power level
>  ... but at other times you need greater accuracy in order to adequately
>  determine and set gain stages in a radio amplifier chain, determine power
>  transfer efficiencies, or perform comparisons against known standards.  In
>  these cases, short of having an expensive Bird or HP power meter on the bench,
>  what can you do?
>
>  We recently needed to track down some gain uncertainties in the SDR Cube
>  Transceiver and with some expert advice we were able to homebrew some simple
>  building blocks that yielded very interesting results.  We will overview and
>  describe this approach and maybe you too can get some ideas for your own
>  bench!

We have a ³Notes² page set up with links, diagrams and bulletized notes that
we¹ll be talking to this evening, so be sure you have your browser set to
this during the discussion as well ...
http://www.njqrp.org/teamspeak/Mar20.html

If you¹ve not joined us for past topics, you¹ll find that we have some fun
in this 1-hour online meeting talking about various technical topics that
are likely of interest to homebrewers and experimenters here in our ham
ranks.  It¹s open for everyone and all you have to do is have the Teamspeak
driver loaded onto your computer.  (For guidance on this, see
http://www.njqrp.org/teamspeak/TeamspeakInstructions.html)

Looking forward to seeing (hearing) many of our 30-some regulars, and invite
others who have not yet joined in on the fun!

73, George N2APB
         &  Joe N2CX
    Chat With The Designers ...
http://www.njqrp.org/teamspeak/TeamspeakChat.html
   (See this page too for past sessions and MP3 podcasts of the audio portion
of each week.)

PS:  if you happen to follow us later on each week by downloading the audio
podcast, last week¹s session on the Intro to the Digital Modes is loaded and
available at: http://www.njqrp.org/teamspeak/Mar%2013.html




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