12-12-2007, 10:33 PM
Well I decided to pull the chassis out and trace out what was what with the mess of wiring around the loop frame. As far as I can tell, there were two thin wires that both terminated to a lug on the antenna terminal strip that ultimately connects to the chassis. I am assuming that each of these wires were wound around the antenna frame perpendicular to the antenna loop and basically were fastened at each end to a hole in the frame. Since this wire was cut in several places and some sections missing, that's what I can gather. Am I correct in this, and if so, is this some sort of 'ground plane' that is required for this antenna setup? When it comes time to work on this chassis I want to replace it - any help with the number of turns etc. would be helpful.
Another thing I discovered is that this unit has a mixture of cloth covered wire and the dreaded rubber insulated style. Some of the rubber pieces are deteriorating and I'll replace them. As far as the others, what is typical with the rest of you who work on these type chassis - do you typically replace all of the rubber wiring to be sure to nip future problems in the bud?
One last thing I noticed in looking at this one - the multi sectioned electrolytic was rated at 120v and the print shows a voltage measurement of 120V on one section. Nothing like working right at the rating of the unit - my cap looks like it has expanded out both ends of the cardboard tube.
Another thing I discovered is that this unit has a mixture of cloth covered wire and the dreaded rubber insulated style. Some of the rubber pieces are deteriorating and I'll replace them. As far as the others, what is typical with the rest of you who work on these type chassis - do you typically replace all of the rubber wiring to be sure to nip future problems in the bud?
One last thing I noticed in looking at this one - the multi sectioned electrolytic was rated at 120v and the print shows a voltage measurement of 120V on one section. Nothing like working right at the rating of the unit - my cap looks like it has expanded out both ends of the cardboard tube.