[R-390] building new components
DJED1 at aol.com
DJED1 at aol.com
Thu Dec 15 14:01:04 EST 2005
I'm inclined to agree with Paul. There's a few items that are no longer
obtainable that also have the biggest impact on functionality. IMO these
include the meters, the mechanical filters and the BFO and PTO. I think you can
buy repackaged Rockwell filters, but there is no source of meters that I know
of. And I see my PTO gradually deteriorating (the hermetic seal disappeared
years ago) with no way to refurbish it. If it dies, the receiver is dead.
I did some thinking as to whether it was feasible to build a solid-state
replacement that would go in place of the PTO, but couldn't find an encoder with
enough resolution. It sure would be nice to have a PTO that really gave
perfect 100 Hz readout over the whole 1 MHz band, even it it was (Gasp) solid
state.
On the other hand, I think Fair Radio has piles of non-working modules which
are available to use for mechanical parts. Obviously there are some
shortages like Oldham couplers, but they should be easy to reproduce.
Ed
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