Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

LYRIC JR , All Amrican Mohawk
#1

My 22 year old daughter asked me if she could have a old console radio for her dinning room , I ofcoarse said yes, having over 500 radios, in 1991 I fixed up this 1930 Lyric "J" little console,very nice looking, used it as a working display at a local radio station's 50th aniversity,[1941] played great all that day, then the radio was put in to storage, got it out last weekend. This radio's chassie is a six tube, counting rectifier, TRF, uses three 24's for RF amp, and an other 24 for detector and a 45 output,
The radio played but if you turn up the volume it will osilate, like the early 1920's regenative radios , all the volume control is, is an antenna trimer , we don't have much of an antenna, my daughter is happy with the volume and sound it has ,but I'm not! OK, what's happening? is it feeding the signal over and over in the detector like an old regenitive ? maybe a bad mica cap?
#2

I wonder if changing the antenna length would affect it? Maybe add a small cap, say 100-250 pf range?

The other thing that comes to mind are riveted ground connections or shields in general if it has been sitting idle for so long.

And if you have a variac handy you might try dropping the AC voltage to see it and see how it goes.

GL, Bill
#3

All very good advise indeed Exray!! Also, if ever a old chassis-design could ever benefit from making sure orig "tube-shields" arent missing,and actually used where needed, the TRFs are a classic case of needing them in most cases! As a old-timer radio tech once told me,all mfgrs TRFs chassis are: " as touchy as a old-maid at a stagg-convention"! (hee hee) No wonder most Atwater Kents used metal-cabinets as a overall chassis shield with a pop-off top lid? All my TRFs work well with approx 25' outdoor longwire antenna. Seems to balance well with all my personal sets. Todays more powerful AM local broadcasters transmitters also wreak-havoc on all the old TRFs for overloading the antennas. Thats where your suggestion of adding the cap helps alot too!! Ive used many a aluminum beer-can with both ends cut off to mfgr tube-shields for these type sets with good results also. The TRFs are super-touchy indeed in todays world of mass generated RF! Most better TRF chassis designs can even receive RF generated by most nearby neighbors washing-machines during the spin-cycle also! Icon_wink




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Gloritone 27 Radio
I have a model 27 that someone painted the cabinet brown. I've been trying to sell it for awhile but the cabinet paint m...Jim Dutridge — 02:30 PM
Restoring Philco 96
Joseph Yeah. The situaction is complicated by me living with my family in NJ while mom is in FL. Were it not for my ...morzh — 10:55 AM
Restoring Philco 96
Best of wishes for your mother. I hope she recovers well. My mother struggles with sciatic pain as well, so I am familia...jrblasde — 10:41 AM
Restoring Philco 96
Well, because I am away, I cannot check it. Hope mom becomes better enough for me to get back. I think I will be here f...morzh — 10:27 AM
Restoring Philco 96
Nice find! I hope it completes your console.jrblasde — 08:45 AM
Gloritone 27 Radio
Hello john, That, is the first time I have have seen or heard of that brand and model. Welcome to the party !! Sincer...radiorich — 08:08 AM
370 Norman Bel Geddes trim pieces
Thank you! I’ll probably use the half-round molding and tone it to match the original. Thanks for the replies!Max T — 06:34 AM
Gloritone 27 Radio
I'm kind of late to this thread, but Buzz1151 has a 3 part restore series on the model 27: A little bit of extra t...Eliot Ness — 05:48 AM
370 Norman Bel Geddes trim pieces
You can get half-round moulding in various diameters at any home improvement store. That way the flat edge is uniform. ...GarySP — 12:03 AM
42-345 Resistors
Great comments. I have a tinkering bench at my office, and that's where Little Phil is right now. I will have to comb ...proftrussell — 11:12 PM

[-]
Who's Online
There are currently no members online.

>