Metro Amateur Radio Club

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10 Aug 2014 Sunday Net Topic & Question

This weeks topic was: Do you follow astrological events?

This weeks question was: What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency?

A. Desensitization

B. Quieting

C. Cross-modulation interference

D. Squelch gain rollback.


The correct answer was A. Desensitization


Past questions and topics can be found by clicking 'Weekly Net Info'.



Last Updated on Sunday, 17 August 2014 19:16

Ham Testing

Two Hams Passed their Test on April 1st! That's No Joke

Prior to the April 1 MAC meeting, VE Coordinator AB9OP conducting a test session and both candidates passed their exams!
Contact Marc by emailing him at This e-mail address is being protected from spambots. You need JavaScript enabled to view it to reserve a testing spot at our next meeting or prior to the next CFMC meeting. You must make the arrangement in advance.

If you are ready to test for your amateur radio license, whether it be your first test (Tech) or testing up to General or Extra, you can test with CFMC or MAC  clubs.
You CAN become a licensed ham. Contact Henry at This e-mail address is being protected from spambots. You need JavaScript enabled to view it for more info.
Tests are administered by the local VE coordinator Marc, AB9OP. He can be contacted at This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Last Updated on Wednesday, 02 April 2014 12:02

System Fusion Repeater Installed

MAC System Fusion Repeater Installed

The METRO AMATEUR RADIO CLUB REPEATER on 147.315/147.915 has been upgraded to a new repeater, the Yaesu DR-1, supporting legacy analog FM and supports the System Fusion digital mode – a specific implementation of C4FM FDMA.

Thanks to Bob K0KVK, Lyam N9LVG, Arne W9FO and Vern K9VRG for installing and programming the new repeater in April.

Yaesu has chosen MAC and CFMC radio clubs to be part of a beta test program.  Yaesu sent us the radios. All we have to do is use them!
The new technology these repeater use is known as “mixed-mode”.  Essentially, it means “analog in = analog out -- digital in = digital out”.  Digital signals sound something like the tones from dial-up modems that we used to access the Internet, in by-gone days. 
The repeater upgrade is part of a unique opportunity to be a part of the field trials of an emerging technology, we encourage as much repeater use as possible – both analog and digital.  Your feedback is important.
Last Updated on Sunday, 27 April 2014 23:39
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Hot News


Program will consist of a presentation on propagation.

Special Event MAC club operating ham radio at the Illinois Railway Museum in Union, Illinois July 25, 2015

Also during the June 9th meeting we will discuss
-  Finishing Plans for Field Day 2015 (June 27)
-  The debut of Echolink on the MAC repeater