[Drake] TR7 PA problem: part 3

[ik2bcp - Guido Tedeschi]

Hello Larry,
    many thanks for the answer.
Do you say that about 12dB of gain difference between 1.8 and 18MHz is 
normal?
If my PA is fine, what do you think about my problem?
Please, look at my previous two message on the list ("TR7 PA problem" and 
"News about TR7 PA problem")
73 and thanks
Ciao
Guido, ik2bcp


----- Original Message ----- 
From: <ltaft at charter.net>
To: <drake at mailman.qth.net>
Cc: <ltaft at 2fords.net>
Sent: Saturday, February 05, 2005 5:29 PM
Subject: Re: [Drake] TR7 PA problem: part 3


> You should have an increase in drive signal as the frequency increases. 
> The gain of the amp decreases with increasing frequency.
>
> Using an oscilloscope on the input to the amp board I measured the 
> following:
>
> At 3.5 MHz
> Input to amp board 1.6 volt peak to peak.
> Output 120 watt output.
>
> At 28 MHz
> Input to amp board 6.2 volt peak to peak.
> Output 85 watt output.
>
> 73, Larry  K2LT
> drakerepair.com
> 800-687-9161