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: MFJ MEMORY KEYER MFJ-495  (Read 3344 times)
W8PO
Member

Posts: 20




Ignore
« on: May 26, 2013, 11:49:49 AM »

I bought this keyer at Dayton and it works fine until I plug it into my ELEC-KEY jack on the front panel of my IC-746PRO. I have read and read manuals with no luck. Any ideas out there what I am doing wrong?  Huh

Larry W8PO
Logged
K7KBN
Member

Posts: 2814




Ignore
« Reply #1 on: May 26, 2013, 04:49:24 PM »

Try Page 1 of the Icom manual.  That jack is for the built-in keyer.
Logged

73
Pat K7KBN
CWO4 USNR Ret.
W8PO
Member

Posts: 20




Ignore
« Reply #2 on: May 26, 2013, 07:44:12 PM »

What I have discovered is that according to my manual I use a mono 1/4 jack from the output on my external keyer and that plugs into the straight key jack in the rear. I have done that and when I hit either side of my paddle the rig just sends a long dah abt 2 seconds long. Got me confused. Angry
Logged
K7KBN
Member

Posts: 2814




Ignore
« Reply #3 on: May 26, 2013, 08:42:28 PM »

W8PO - think about it:  the straight key is a simple SPST switch, so a MONO plug will work.  Key up = open circuit; key down = closed circuit for as long as you hold it closed.

If you're using an external keyer, you have to be sure it's wired exactly as shown.

There may be some menu issues also.
« Last Edit: May 26, 2013, 08:51:35 PM by K7KBN » Logged

73
Pat K7KBN
CWO4 USNR Ret.
W5CPT
Member

Posts: 557




Ignore
« Reply #4 on: May 27, 2013, 05:27:44 AM »

I use the same keyer into an Icom IC-756.  

The input to the Keyer for your paddles is the Stereo Phone Jack marked "Key Input".  The output of the keyer, an RCA jack labeled “Keying Output” is wired directly to the radio input a ¼” mono phone plug marked “Key” through an adapter.  

What most likely is causing your malfunction is the setup of the keyer.  I would check the Weight parameter – page 10 of your manual.   The keyer that preceded my 495 was a 452 and I had a very similar problem when I first installed it.

Clint – W5CPT -
« Last Edit: May 27, 2013, 05:31:22 AM by W5CPT » Logged
W8PO
Member

Posts: 20




Ignore
« Reply #5 on: May 27, 2013, 08:22:12 AM »

Thanks for the hints guys......cookout for all today so won't have time to mess with it. Hope you all have a great Memorial Day.
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!