[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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