Deprecated: Assigning the return value of new by reference is deprecated in /home/freehos1/public_html/blinki/wp-settings.php on line 520

Deprecated: Assigning the return value of new by reference is deprecated in /home/freehos1/public_html/blinki/wp-settings.php on line 535

Deprecated: Assigning the return value of new by reference is deprecated in /home/freehos1/public_html/blinki/wp-settings.php on line 542

Deprecated: Assigning the return value of new by reference is deprecated in /home/freehos1/public_html/blinki/wp-settings.php on line 578

Deprecated: Function set_magic_quotes_runtime() is deprecated in /home/freehos1/public_html/blinki/wp-settings.php on line 18

Strict Standards: Declaration of Walker_Page::start_lvl() should be compatible with Walker::start_lvl(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1199

Strict Standards: Declaration of Walker_Page::end_lvl() should be compatible with Walker::end_lvl(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1199

Strict Standards: Declaration of Walker_Page::start_el() should be compatible with Walker::start_el(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1199

Strict Standards: Declaration of Walker_Page::end_el() should be compatible with Walker::end_el(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1199

Strict Standards: Declaration of Walker_PageDropdown::start_el() should be compatible with Walker::start_el(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1244

Strict Standards: Declaration of Walker_Category::start_lvl() should be compatible with Walker::start_lvl(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1391

Strict Standards: Declaration of Walker_Category::end_lvl() should be compatible with Walker::end_lvl(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1391

Strict Standards: Declaration of Walker_Category::start_el() should be compatible with Walker::start_el(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1391

Strict Standards: Declaration of Walker_Category::end_el() should be compatible with Walker::end_el(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1391

Strict Standards: Declaration of Walker_CategoryDropdown::start_el() should be compatible with Walker::start_el(&$output) in /home/freehos1/public_html/blinki/wp-includes/classes.php on line 1442

Strict Standards: Redefining already defined constructor for class wpdb in /home/freehos1/public_html/blinki/wp-includes/wp-db.php on line 306

Strict Standards: Redefining already defined constructor for class WP_Object_Cache in /home/freehos1/public_html/blinki/wp-includes/cache.php on line 431

Strict Standards: Declaration of Walker_Comment::start_lvl() should be compatible with Walker::start_lvl(&$output) in /home/freehos1/public_html/blinki/wp-includes/comment-template.php on line 0

Strict Standards: Declaration of Walker_Comment::end_lvl() should be compatible with Walker::end_lvl(&$output) in /home/freehos1/public_html/blinki/wp-includes/comment-template.php on line 0

Strict Standards: Declaration of Walker_Comment::start_el() should be compatible with Walker::start_el(&$output) in /home/freehos1/public_html/blinki/wp-includes/comment-template.php on line 0

Strict Standards: Declaration of Walker_Comment::end_el() should be compatible with Walker::end_el(&$output) in /home/freehos1/public_html/blinki/wp-includes/comment-template.php on line 0

Strict Standards: Redefining already defined constructor for class WP_Dependencies in /home/freehos1/public_html/blinki/wp-includes/class.wp-dependencies.php on line 31

Strict Standards: Redefining already defined constructor for class WP_Http in /home/freehos1/public_html/blinki/wp-includes/http.php on line 61

Strict Standards: Redefining already defined constructor for class SimpleGoogleSitemap in /home/freehos1/public_html/blinki/wp-content/plugins/simple-google-sitemap/simple-google-sitemap.php on line 46
Design of VLF Receiver to Detect Solar Flares and Gamma Ray Bursts | Blinki Blog - 2 GB FREE
Home > Electronic Technology > Design of VLF Receiver to Detect Solar Flares and Gamma Ray Bursts

Design of VLF Receiver to Detect Solar Flares and Gamma Ray Bursts

Here is an updated version of the simple VLF receiver first described in the April SID Supplement of the Solar Bulletin. The design is based on the principle known to all amateur radio operators that the most important part of a transmitting or receiving system is a good antenna and a well matched transmission line.

We met the first requirements by building a hexagonal loop antenna that measures around 1meter (59 inches) across the diagonals and winding it with 24 turns of # 14 stranded copper wire & the second requirement by eliminating the transmission line altogether. The receiver is built right on the loop antenna so there is no need for a transmission line between the antenna and the receiver. After the signal is amplified 900 times it is sent over a transmission line consisting of ordinary 4-wire telephone wire to a recorder driver. There is no need to match this transmission line to the recorder driver because the signal has already been amplified 900 X. There is plenty of signal to make up for any lost on the transmission line. We call this a “Loop Antenna Receiver” because the loop is the receiver. It is the LC resonant circuit for the receiver and owes its success to being a large high-Q loop with much greater aperture than small

loop antennas usually used with Sudden Ionospheric Disturbance (SID) receivers. The low resistance of the #14 wire gives the loop a high Q, about 400 compared to about 20 for small loop antennas wound with #26 wire that are used by most SID observers. The receiver has a pass band of less than 500 Hz which compares favorably with other SES (Sudden Enhancement Signal) receivers in use today.

This loop antenna receiver is meant to be located outdoors so it can be placed as far as possible from electrical wiring which is the source of most if not all of the interference that plagues SES receivers. Below the chart is a simplified diagram of how to hook the parts of the receiver together. It is not necessary to put the receiver in a weatherproof box.

image-1

Fig. Fundamental Circuit Diagram of VLF Receiver to Detect Solar Flares and Gamma Ray Bursts

 

 

Categories: Electronic Technology Tags:
  1. No comments yet.
  1. No trackbacks yet.
You must be logged in to post a comment.