[AMRadio] 75A4

[Todd, KA1KAQ]

On Tue, Dec 27, 2011 at 6:32 PM, D. Chester <k4kyv at charter.net> wrote:
> If you can't find a replacement bracket it should be easy to fabricate one.
> It's just a  strip of sheet metal with two small holes near each end,
> corresponding to the screw holes on the front panel, with a larger hole in
> the middle to accommodate a quarter-inch shaft bushing. I forget whether the
> two screw holes in the panel are tapped for a machine screw, or if a nut in
> used behind the holes in the front panel.
>
> The receiver will tune much more nicely if you can find a replacement 4:1
> vernier mechanism and spinner knob.

The panel is tapped, Don. I don't recall if the plate is or not.

No doubt some of the early models got upgraded when the 4:1 vernier
option came along, as they could be bought separately. As well, I'm
sure some were removed from A-4s and added to other receivers over the
years. I picked up a 75A-2 with a vernier added and have seen numerous
51J examples with it. Also had one A-4 with a standard Dakaware tuning
knob missing the plate. For someone getting one like this, the plate
would be the easier and cheaper choice to waiting for a 4:1 to turn up
at an affordable price.

Can't remember if there's an actual bushing in the center or if the
metal is just curled back forming a lip of sorts, to prevent scoring
the tuning shaft. Works well, though.

~ Todd,  KA1KAQ/4