[ICOM] PRO III and shut down

[jkolin at optonline.net]

Have U confirmed that the fan starts the instant rig goes into XMIT?

My Pro III with FET finals had similar problem dropping to 5W and eventually one of the finals shorted & then I had zero output.

Jay, NE2Q

----- Original Message -----
From: hamop 
Date: Tuesday, July 3, 2012 12:40 am
Subject: Re: [ICOM] PRO III and shut down
To: ICOM Reflector 

> Usually Phil I run about 50 into the amplifier but if barefoot I 
> run 100 but 
> no problems in past couple of years. Today I was on CW with 50 
> watts into 
> the amp, NOT on RTTY .hi hi The manual spec sheet says power is 
> 5-100 
> variable on SSB, CW, RTTY and FM. It does say 5-40 but only says 
> AM. And 
> under RTTY use section, it does not say to limit to 50 watts, no 
> mention of 
> NOT using 100 watts ( as the spec sheet indicates is OK too). 
> But I have 
> always wondered. The cooling fins do not get hot with what 
> little RTTY 
> calling I do, calling 10 seconds and listening and my reports 
> are about 10 
> seconds too. NO long QSOs at all, just my call and reports and 
> 73 and such.. 
> hi hi
> TU, Phil and nice to hear from you.
> San Have a good 4th!
> 
> -----Original Message----- 
> From: Phil Krichbaum
> Sent: Monday, July 02, 2012 11:17 PM
> To: ICOM Reflector
> Subject: Re: [ICOM] PRO III and shut down
> 
> 100w on RTTY could be the problem. It is 100% duty cycle, much 
> over 50W
> is taking a chance with a PROIII on RTTY.
> 73 Phil N0KE
> 
> 
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