Warning: Attempt to modify property of non-object in /home/metalsch/public_html/libraries/framework/Joomla/Registry/Registry.php on line 428

Warning: Attempt to modify property of non-object in /home/metalsch/public_html/libraries/framework/Joomla/Registry/Registry.php on line 428

Warning: Attempt to modify property of non-object in /home/metalsch/public_html/libraries/framework/Joomla/Registry/Registry.php on line 428

Warning: Attempt to modify property of non-object in /home/metalsch/public_html/libraries/framework/Joomla/Registry/Registry.php on line 428

Warning: Attempt to modify property of non-object in /home/metalsch/public_html/libraries/framework/Joomla/Registry/Registry.php on line 428

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/metalsch/public_html/libraries/framework/Joomla/Registry/Registry.php:428) in /home/metalsch/public_html/libraries/joomla/session/session.php on line 658

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/metalsch/public_html/libraries/framework/Joomla/Registry/Registry.php:428) in /home/metalsch/public_html/libraries/joomla/session/session.php on line 658

Deprecated: iconv_set_encoding(): Use of iconv.internal_encoding is deprecated in /home/metalsch/public_html/libraries/joomla/string/string.php on line 27

Deprecated: iconv_set_encoding(): Use of iconv.input_encoding is deprecated in /home/metalsch/public_html/libraries/joomla/string/string.php on line 28

Deprecated: iconv_set_encoding(): Use of iconv.output_encoding is deprecated in /home/metalsch/public_html/libraries/joomla/string/string.php on line 29
Metal Schnitzel

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; plgContentJComments has a deprecated constructor in /home/metalsch/public_html/plugins/content/jcomments/jcomments.php on line 25

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; JCommentsACL has a deprecated constructor in /home/metalsch/public_html/components/com_jcomments/classes/acl.php on line 17

This is a little experiment at building a circuit that seems easy, but may not actually be that simple.  I needed 0° power splitter for my 10 MHz precision frequency standard project.  I picked up a Minicircuits ZFSC-2-1 on eBay which solved my immediate need, but the allure of experimentation is too strong to resist!

Yesterday (8/28/14), I did a lot of testing on the repeater's power supply.  It works!  And in my usual style, I have lots of data:

I had a little time to open up the power amplifier today and snapped a couple of pictures.

Measuring things is fun, but measuring MORE things is a lot of fun!  This article is about the electrical characterization of the receive preamplifier that is part of the UHF repeater recently donated to the Wilson County Amateur Radio Club.

The preamp compensates for the unavoidable losses in the duplex filter and enables the receiver to hear better.

This unit was manufactured by Lunar Industries of San Diego, CA.  I can't find any technical data on it, but that's unimportant for now.  Let's put it on the test bench and find out what we have.

Subcategories