[R-390] Filters

[Barry]

Is it safe to check the windings on those filters with an ohm meter (or, at least, with just any old ohm meter)?

Thanks,
Barry - N4BUQ

----- Original Message -----
> From: "quartz55" <quartz55 at hughes.net>
> To: r-390 at mailman.qth.net
> Sent: Tuesday, February 5, 2013 11:51:39 AM
> Subject: [R-390]  Filters
> 
> Yes, the 2K filter does have some action through it, but gives -2V
> diode load where the 8 and 16 give -7V, but the 4 appears dead.
>  I'll have to go through the .1, 1 455 crystal to see if something
> in there is dragging down the 2 filter.  The filters seem to check
> OK with the ohmmeter though.  I don't think it's in the switch,
> everything looks to be original and undisturbed unless the guy was
> really good.
> 
> The variable action I'm talking about is during a time period through
> the same filter so I think it's a cap or something changing value
> during warm up.  And that's in another unit.  The filters in it are
> good.
> 
> BTW I took L601 apart and it appears to be made with #34 enameled
> wire and it smells really burned.  Lots of wax in the thing and the
> round button popped off while I had the heat gun on it and I can't
> find it now.  Not sure it's worth trying to re-wind if I can find a
> replacement at a reasonable price.  110 ohms for #34 is over 400'.