Since I don't have a schematic for that radio to look at I'm not sure where
T3 is. Input to final transistors or output? Even so, direct comparison on
a wattmeter may be misleading. The impedance is different in various places
in the PA circuit, only the input and output to the whole PA board can be
assumed to be 50 Ohms. How about measuring voltage at those various points
using either a HF AC Voltmeter (the kind with the detector diode right
inside the probe) or an Oscilloscope with 10X probe?
DE N6KB
On Tue, Oct 6, 2020 at 9:21 AM ROLAND HOWELL via TenTec <
tentec@contesting.com> wrote:
>
> Hi All
> Update on the above radio, i attached a co-ax pigtail to the collectors
> of the drive trannies, got 1.5 - 2 watts out at that point, then fitted
> the pig tail to the base's of the power trannies, got just milliwatts
> out, so then attached the pig tail's to output leads of the T3, got just
> 0.5watts out of that transformer.
>
> So do those transformers go faulty?
>
> Any/all advice appreciated
>
> Thanks
>
> Snowy G0HZE
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