[ICOM] Icom 706MKII and current draw

[Ed Senior]

----- Original Message ----- 
From: "John Geiger" <aa5jg at lcisp.com>
To: "ICOM Reflector" <icom at mailman.qth.net>; <ic706 at yahoogroups.com>; 
<IcomIC706mk2g at yahoogroups.com>
Sent: Monday, June 16, 2008 2:37 PM
Subject: [ICOM] Icom 706MKII and current draw


> Does anyone know how much current the 706MKII draws when running full 
> power
> on 2 meters (20 watts).
>
> 73s John AA5JG
> (ex: W5TD, NE0P)
> 6M WAS #1275, 6m VUCC #1260
> 2m VUCC #615, Satellite VUCC #129
>


-----Original Message-----
From: Howard W3CQH [mailto:hsgorden at comcast.net] 
Sent: Monday, June 16, 2008 12:00 PM
To: ICOM Reflector; ic706 at yahoogroups.com; IcomIC706mk2g at yahoogroups.com
Subject: Re: [ICOM] Icom 706MKII and current draw

How about ohms law: E x I = P or I = P/E - therefore 20 watts divided by 
13.2 should draw 1.5a... 

Hi Howard, 

Your math would be fine IF the 706 was 100% efficient; but of course, 
it's not.  

The overall Tx efficiency is probably somewhere between 20% (~7A) and 
70% (~2A).  But rather than guess at efficiency, it would be best if 
someone could weigh in with an actual, empirical measurement.  

73, Ed