Philco 80 Jr, just starting....
Posts: 2,128
Threads: 18
Joined: Oct 2008
City: Merrick, Long Island, NY
(03-15-2012, 10:44 AM) morzh Wrote: (03-15-2012, 01:25 AM) codefox1 Wrote: our voltages are about 10% high, and that does not bode well for tube life. I'd get a bucking transformer installed if you have room to tame it.
A bucking xfmr should not be that large, should it? never saw one, but from the way it works, it may be made quite a bit smaller than the auto or a full step-down.
Do you know a good place to buy one, 120/110V type?
See attached. Many variations on this but this is simplest.
Attached Files
Image(s)
Messages In This Thread
RE: Philco 80 Jr, just starting.... - by codefox1 - 03-15-2012, 12:20 PM
Users browsing this thread: 10 Guest(s)
Recent Posts
Philco model 60
>>and found that the field coil is bad. Should be 1140 ohms, tests at 1.1k ohms.
You have one stringent crit...morzh — 02:07 PM
Philco model 60
Yes I was there. I got some real bargains there. Plus a Zenith 7G605 clipper that I have been trying to find for a fair ...Radios1340 — 01:46 PM
The speaker table error?
G 10-1/2" 65, 76, 87, 95
Push-Pull 45's
2766
0.7
550
3200
H 10-1/2" 77, 96
Push-Pull...morzh — 09:26 PM
A Marconi model 86
I have a Stromberg, one of the early ones, seems early 30s.
This is what I call a back breaker. None of the early Philc...morzh — 08:28 PM
A Marconi model 86
A backbreaker.....PaulPaul Philco322 — 08:12 PM
A Marconi model 86
>>What a behemoth!
A Juggernaut.morzh — 07:47 PM
Philco 70 antenna lead
I am not sure I understood about the coils and the mush. I looked an more than one coil in 20, 70, 90, 60, Zeniths and ...morzh — 07:46 PM
A Marconi model 86
:e_biggrin: What a behemoth! I hope the final result is as much a quality sounding example! Keep us posted on your pro...GarySP — 07:32 PM
A Marconi model 86
I should add that the double conversion may only be used on the shortwave bands, but I haven't looked at the schematic t...Arran — 07:27 PM
Philco 70 antenna lead
Yes, that wire will not pick up much interference as routed - the RF at that level won't be affected, and if you have st...radio1 — 07:26 PM
Who's Online
There are currently 7785 online users. [Complete List ]» 2 Member(s) | 7783 Guest(s)