[NJARC] a few problems

[edotte at optonline.net]

Aaron,All good advice as usual. I guess I might be over analysing with the speaker. Yes, I wanted to do a quikie to hear it. I am sure I would keep an eye out for the real speaker and assembling a period speaker and cabinet would be great.As far as the coil, I could try opening it which I figured to do but I just thought this group has many people with loads of parts and the possibility was and maybe still is there for a replacement. Rewiring sounds interesting.And I am going to open up that transformer and figure out whatis what. Thanks.Ed> Ed> > The circuit for the AK 45 appears to be the same as the 44.  To > use a > modern speaker, you would need an output transformer.  A lot of > the > radios in the 50s and 60s had the transformer mounted on the > speaker > frame.  Why not use an original style speaker from the period?  > There > are a lot of them around and since the speaker has it's own > cabinet, it > would go nicely with the radio.  If you just want to hear it > play, just > grab a tube radio, clip a couple of wires on the input leads of > the > audio output transformer and connect to the speaker posts of the > 45 and > it should work.  Just don't have the volunteered radio powered > up at the > time.> > Good luck on the Glorytone.  You'll either a) find a sacrificial > radio > for parts, b) replace with a modern speaker and use resistors > and > capacitors to replace the field coil, c) have someone rewind the > field > coil, or d) get lucky searching out that wiring break.> > Is the cap in the IF xformer the adjusting type?  If so, I've > had luck > in removing and disassembling the transformer to get at the > capacitors.  > Then remove the screw, lift the plate and mica and clean.  The > silver > likes to migrate.  If that is not the style, then remove it by > destroying it and replace with a modern capacitor.  It might > have to be > mounted on the outside at the terminal lugs.  I don't know the > value, > maybe 200 picofarads.  Some of our knowledgeable people out > there have > done it and probably remember the value.> > edotte at optonline.net wrote:> > >Visit our web site - See http://www.njarc.org> >_______________________________________________> >Hi all,> >> >> >> > It has been a while and I have been enjoying the summer but> >I have a few dangling problems and maybe someone has some > advise or possible> >parts for sale.> >> >> >> > The Atwater Kent 45 I have needs a speaker. I was wondering> >how I could figure out what kind of replacement I could make of > a modern> >speaker. The thing is I have no idea what the field coil > resistance is so I> >could match one. I did check out that very good web site on Atwater> >Kent’s> >but the ONLY model NOT listed is the 45! What to do? Any ideas?> >> >> >> > The Gloritone 26 I have needs a field coil. It is center> >tapped with resistance of 2460 and 9040 Ohms. The part number > is 2555 Radio> >Corp number. The coil itself has a fair open but somewhat > intermittent>operation. I am to the point where I figure open it > up and see what is> >happening as I haven’t much to lose. I have no way of cross > referencing it.> >Maybe someone has a part or an equivalent I could buy.> >> >> >> > I also have a Philco 48-200. The 1st IF transformer> >is not working. It appears to have good DC resistance but it > probably has a> >defective internal cap. The part number is 32-3967. I did check> >oldradioparts.com but no deal. I am looking for this part also.> >> >> >> > So this is my problems and if anyone has an idea or a part I> >would welcome it. Thanks again.Edward > >_______________________________________________> >NJARC mailing list> >NJARC at mailman.qth.net> >http://mailman.qth.net/mailman/listinfo/njarc> >> >> >  > >> > > _______________________________________________> NJARC mailing list> NJARC at mailman.qth.net> http://mailman.qth.net/mailman/listinfo/njarc>