[ICOM] 746 on Rtty

[Gary Nichols]

With my other radio (using 746pro now) I used a 220vac muffin fan connected
to 110vac to blow a very quiet constant air flow across the heatsink in the
rear of the radio...kept it cool and could not even hear it run.
73's de gary, kd9sv

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Gary P. Fiber
Sent: Thursday, November 09, 2006 3:17 PM
To: ICOM Reflector
Subject: Re: [ICOM] 746 on Rtty

Mike,

We always said 100 % duty cycle while I was at Icom, which meant to us full
output for 1 hour key down.

I believe most RTTY ops do not do that severe of duty cycle though. The main
thing is keeping the PA cool so even adding an extra fan blowing across the
heat sink is beneficial and will allow longer key down times. There are some
pretty quiet muffin type computer fans available that move a good CFM of
air.

Gary K8IZ

> I don't plan on running full power on RTTY, but I've been looking in the
> manual and didn't see anything about the duty cycle for RTTY.
> Thanks...
>
> Mike, K9MI

>
>
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
>



Gary P. Fiber K8IZ
GROL PG-19-6691
Washington State Resident
----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/