[ARC5] URM-25 Repair

[Tim]

Hi Wayne - I use a 6-32 screw, 2" long as the set screw for the freq knob.
Its length allows you to tweak the freq control with much more control than
rotating the knob directly.  Simple, very handy.
That trick was also seen on LM-series frequency standard Corrector
knobs...probably a GI innovation...

Tim
N6CC

On Sun, Oct 27, 2019 at 11:48 AM Robert Eleazer <releazer at earthlink.net>
wrote:

> By the way, folks, I discovered that the Allen head set screws for the
> URM-25F band switch knob are not standard set screws but rather are 6-32
> thread.
>
> The good news is that you need not worry about the tiny little set screws
> getting stripped out and instead just replace them with standard Phillips
> Head 6/32 screws, about 0.5 inch long.  The head of the screw sticking out
> a little bit does not interfere with using the band switch and you can
> get the setscrew much tighter and easily eliminate the band switch knob
> slipping.
>
> Wayne
> WB5WSV
>
>
>
>
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