Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: hooking up my ICOM-745 to my Mixer..Looking for Microphone choices??  (Read 4069 times)
N3QOU
Member

Posts: 28




Ignore
« on: June 27, 2013, 04:48:38 AM »

Hello All,
 Going to hookup my ICOM 745 to a 4 channel audio mixer to quest for a better audio signal.
Can this be done with the 745?And if so what Microphones would you choose? Please keep in mind I am on a limited budget.
I had the mixer as I am old blues guitarists.
Thank you.
Logged
K0JEG
Member

Posts: 638




Ignore
« Reply #1 on: June 27, 2013, 06:33:44 AM »

Remember that you have limited bandwidth out of the radio, and bass uses much more power than treble. Commercial ham microphones (like Heil sound's radio mics) are designed around the idea of getting "punchy" audio out and making the most of the available power and bandwidth. In any other application they sound terrible, lacking any sort of accuracy in capturing the sound the way most sound engineers want it.

In other words, don't try to get something that's flat from 20Hz to 30KHz, and sometimes the worse the mic the better it will sound on the air.

I recently picked up a Chinese large-diaphragm mic at a pawn shop for cheap. I plan on trying it out on the air (but no hurry because it's more just for looks), but with the bass rolloff filter on and a lot of mid and high cut equalization and compression first.
Logged
KG6YV
Member

Posts: 506




Ignore
« Reply #2 on: June 27, 2013, 10:47:59 AM »

Most mixers output at line level (~1-2v) amplitude so you will need to pad down the mixer output or you will overload your transceiver.  Although some transceivers have what they label a "patch input" in reality the patch input is NOT designed to take a line level input so you will still need a pad.  I have a W2IHY adjustable pad that works well for this @around 30db attenuation.  This pad is nice because it also has an internal isolation transformer which eliminates any hum problems.

FYI
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!