[R-390] RF subchassis separation

[Barry]

> Questions:
> 
> 1. Must I disassemble all the gearing to remove the RF chassis
> assembly?  Would be nice if it could be left as is, but looks to be
> non-possible.  Raises the question why the design of the RF deck is
> not
> as modular as the rest of the receiver.  Maybe compromises...

No, the gears, slug racks, and the 2nd oscillator all can come out together.  You don't have to separate the gears from the RF deck to work on the RF deck.

> 2. Why are one of the green headed philips screws that hold the RF
> chassis to the main chassis partially obscured?  Even with a proper
> size
> screwdriver I can't get a grip on the screw head.  Is this expected?
> Looks as if I have to remove the rear panel and dig a bit...

I don't know "why", but it is.  You'll need an extra-long screwdriver to get that one out.

> 3. Is is possible to mix and match the slug racks?  Faint memory of
> someone mentioning the materials of these slugs may have specific
> qualities for each position.  Unfortunately these were removed from
> their original locations without reference to where they came from.
>  Not
> by me :)

You can mix the RF or the IF slugs; however, you cannot successfully swap an IF slug with an RF slug.

> /K1MGY


HTH,

Barry - N4BUQ