Paul, I took a look at the schematic and don't see slugs indicated for 20 - 10 M. If they were originally present but now missing, I'm guessing you'd not be able to peak the antenna trim cap for maximum band noise on those bands.
Hopefully someone with a 1A will respond. -Tom, AG9X On Sun, Jan 16, 2011 at 7:39 PM, Paul Christensen <[email protected]> wrote > Upon further investigation of the Drake 1A schematic, it appears the > antenna coils are tuned to resonate with the antenna trim cap such that the > trim cap is at mid range in the center of each respective band. This is > necessary on 80m and 40m, but spanning the band from edge-to-edge on 20m > through 10m does not involve much change of the trim control. > > I'm beginning to think (perhaps wishfully?) that the slugs were never there > in the first place. Anyone have a Drake 1A that can take peek through the > perforated cover? Tnx! > > Paul, W9AC > > ----- Original Message ----- From: "Paul Christensen" <[email protected]> > To: <[email protected]> > Sent: Sunday, January 16, 2011 8:23 PM > Subject: [Drakelist] Drake 1A Coil Slugs > > > > I recently acquired a Drake 1A receiver in nice condition except that >> three coil slugs are missing in the 20,15, and 10m antenna coils. It >> appears Drake used the same slug and phenolic coil assembly for all coils in >> the 1A. >> >> I've seen these used a million times before: It's a round ferrite slug >> with a straight blade slot on one end of the ferrite core. The other end of >> the ferrite is attached to a long bass screw. The mating phenolic coil form >> assembly is the type that just snaps into the chassis. >> >> I now it's a longshot, but anyone know a source? Is it possible they >> simply were not used on the 20m-10m ant coils? >> >> Paul, W9AC >> >> _______________________________________________ >> Drakelist mailing list >> [email protected] >> http://mailman.zerobeat.net/mailman/listinfo/drakelist >> > > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist >
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