[ARC5] Help

[AKLDGUY .]

You say the note changes. Presumably you're listening to the signal with a
monitoring receiver.
If you hear a certain beat note with only the VFO running and the note
changes when the transmitter is keyed, that's normal for a MOPA transmitter.

The critical thing is: does the signal chirp when heard at a distant
location where the operator can't hear the VFO?

73 de Neil ZL1ANM


On Sun, Oct 2, 2016 at 8:38 AM, Thomas Scherer <w2kbw1520 at gmail.com> wrote:

>  I recently build up a power supply for my BC-459 Transmitter.
>
> > All voltages are ok and made most of the the required mods within.
> > all  nos tubes.
> >
> > The transmitter is producing abt 35 watts output with 600 volts on the
> plate.
> > 300 vdc sg
> > 215 vdc osc
> > 24 vdc Fil Switching supply
> >      http://www.jameco.com/z/S-150-24-Mean-Well-AC-to-DC-
> Power-Supply-Single-Output-24-Volt-6-5-Amp-156-Watt_123450.html
> >
> > However when I key the transmitter, the note changes its tone severely.
> >
> > one of the obvious problems is the eye tube doesn’t open when the
> transmitter is tuned to the 8kc calib.crystal.
> > ?? It may have nothing to do with the problem (perhaps a bad crystal)
>     any suggestions??
>   Thanks,
>   - - Tom w2kbw
>
>
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