[ICOM] 746 on Rtty

[W8OKN Sean]

Great idea Gary.

I've used those small mini 12 volt fans that are very quiet.  They are about 
1" by 1".

Sean
W8OKN

----- Original Message ----- 
From: "Gary Nichols" <kd9sv at comcast.net>
To: "'ICOM Reflector'" <icom at mailman.qth.net>
Sent: Thursday, November 09, 2006 2:12 PM
Subject: RE: [ICOM] 746 on Rtty


> 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/
>
>
> ----
> 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/
>
>
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