I haven't followed this thread very closely, so cut me some slack if I 
am covering issues already covered.

When you are making these power measurements, are you using a dummy load 
with the internal tuner turned off?  Also, if using a TW1, the accuracy of 
the TW1 should be in question.  Besides the TW1's accuracy being in 
question, it may not be linear from 1.8 through 30mHz.  Just some thoughts.

73

Howard #3

----- Original Message ----- 
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, August 15, 2012 9:24 PM
Subject: Re: Manual tuners


> almost sounds like the radio might need an alignment?
> Though I know that on the outside edges of the tx range, IE low end of 160
> and top end of 10 meters, most rigs will show lesser output power.
> I see similar things on my rig as well.
> Perhaps an alignment would average out the power better across the entire 
> tx
> range...
>
> 73
> Colin, V A6BKX
> ----- Original Message ----- 
> From: "Howard Kaufman" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, August 15, 2012 6:29 PM
> Subject: Re: Manual tuners
>
>
>> Jim, when you get the low beep on the tuner it is out of the circuit. 
>> the
>> 480 will tune anything under 6/1.  Yes it is more lossy than the internal
>> tuner.
>> Now this is odd.
>> at 28.5 mhz with a dummy load, I get 54 watts out with the internal 
>> tuner,
>> and 62 watts out with the internal tuner bypassed.  The power level is 
>> set
>> at 100 watts.
>> On 1.805 I am getting 34 and 45 watts respectively.
>>
>> I am suspecting insertion loss from the coax switch, will check that out
>> and
>> then start changing jumpers.
>> Any other ideas?
>> I have a 6 meter Motorola on the same power supply, turning it off didn't
>> change a thing.