Steve,

That 751A is old technology, but it's one of the truly great radios.  I had 
one for 20 years, and have many fond memories of using it.

Steve

----- Original Message ----- 
From: "Steve" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 29, 2011 14:20
Subject: Re: Reduced power output for TS590


> Tom,
>
> I doubt that the half volt difference is the problem.
>
> Have you made certain that you have the power level still set at maximum?
>
> Also, you are probably stressing over something that, although it might be
> interesting to know for certain was different, may not be since you didn't
> know what your reading was before you updated the firmware.  Also, no body
> will know the difference in terms of signal level.
>
> By the way, I should have my 590 here next week.  I'll be unloading my 
> Icom
> IC-751A with voice synthesizer, external keypad, and 250Hz CW filter.
>
> Steve, K8SP
> ----- Original Message ----- 
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, December 29, 2011 7:15 AM
> Subject: Reduced power output for TS590
>
>
>> Hi, all.
>>
>> Last night, I was working with my TS590, and I found that it only
>> seems to put out a maximum of about 65 or 70 watts when I connect it to a
>> dummy
>> load, or when I key the rig on a resonant frequency for one of my
>> antennas.  These power readings were taken with my TW1.
>>
>> I have checked the integrity of all of my internal coax jumpers, so that
>> shouldn't be a contributing factor.
>>
>> I took DC voltage readings from my Astron RS35 power supply with my Omega
>> talking multi-meter, and  found that
>> the supply voltage is 13.350.  This voltage is lower than the 13.8 volts 
>> I
>> would expect, which is causing me to wonder whether the supply is 
>> starting
>> to fail.  Low voltage is what could cause the rig to fold
>> back, so I'm wondering if that is what is happening.
>>
>> Another thought I had was whether the problem might somehow be related to
>> the firmware upgrade I
>> just did?Specifically, I upgraded from firmware version 1.04 to 1.06 this
>> past Monday.  I can't absolutely swear to higher output power readings
>> before the firmware update, but I do believe they were higher--i.e. 
>> closer
>> to 90 watts or so before the update.
>>
>> Is there a service menu adjustment for power output that I might check? 
>> I
>> could probably get sighted assistance  to help me with that if I had some
>> detailed
>> instructions as to how to get there.
>>
>> Just for the record, I took all power readings with the auto tuner off,
>> and
>> the tentech
>> manual tuner in the bypass position.   I took the readings  in both RTTY
>> mode and by pressing the "send" button on the rig's front panel.
>>
>>
>> 73 from Tom Behler: KB8TYJ
>