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

Philco 38-3XX tube - shielded???
#1

I have a bit of a dilemma. The RF amp tube (a 6U7G) in my Philco 38-3XX console sits in a rather odd-looking socket base. THe socket itself is nothing out of the ordinary, but there is a piece riveted to the chassis that looks like a sort of short cylinder with two sides flattened out, and a hole in the top for the tube to go into. I presume that a shield is supposed to go over this cylinder, but it is the only thing of this type in the radio, and a standard round Philco tube shield is too big, and a Philco square shield is the wrong shape. Is a shield supposed to fit over this? It's at the lower left of the tuning condenser in this photo:

[Image: http://i294.photobucket.com/albums/mm100...744076.jpg]

If a shield IS supposed to fit over this, would someone PLEASE post a photo so I can send it to Mark Oppat at Old Radio Parts and get the RIGHT one? BOTH of us are getting a bit bewildered by this thing...
#2

That looks like it needs the cylindrical aluminum shield used in Philcos with the 6U7G RF amp.

[Image: http://philcoradio.com/phorum/attachment.php?aid=1864]
#3

you could use a round one but on mine it has a square one [just like the others] that sits at an angle to all the rest because the cap wire will not connect if it was turned like the others if it did it would short out david
#4

Mondial is correct - that base was meant for the cylindrical aluminum shield as shown in his photo. I do not know why Philco used this odd shield in certain 1938 models instead of the typical square shields Philco used during that time period.

--
Ron Ramirez
Ferdinand IN
#5

Thanks, all - that's a BIG help! Icon_smile
#6

In some Philcos, the use of this tube shield base also prevents the use of GT style tubes that have a slightly larger base than the G tubes do.

"I just might turn into smoke, but I feel fine"
http://www.russoldradios.com/
#7

The photos were a HUGE help. I now have the correct tube shield. Thanks all!




Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco model 38 code 121 not receiving signal.
Do make sure that you twist the 3 wires from the chassis to the transformer, and dress away from tubes, especially audio...MrFixr55 — 07:38 PM
Philco model 38 code 121 not receiving signal.
The cone unfortunately got damaged when I removed it. The glue that held the cone to the basket was sloppily applied and...Stormlord5500 — 07:12 PM
Philco model 38 code 121 not receiving signal.
So what was wrong with the original speaker? Was the cone damaged? Unless it's totally hopeless I would put it aside as ...Arran — 05:31 PM
My collection presentation
There is an article on my site that introduces the first portable radios in my collection. I have only provided a link t...Vlad95 — 01:17 PM
Electrolytic restuffing/internals
Bridkarl This specific cap you have is the easiset type to restuff. I usually cut it at the upper border of the depr...morzh — 11:35 AM
philco predicta
Hi CGL18, First off, welcome to the Philco Phorum. I have not worked on a TV for a while but here are some givens: ...MrFixr55 — 08:22 AM
Another amp build - here I go again!
Sweet! I actually have a Dynaco Mark 4 that I had been running with 6L6s with no mods. Seemed to my 14-year-old head a...MrFixr55 — 12:57 AM
PT-6 finished!!
Hi Gang, Tube heaters are not "Ohmic" devices (that maintain specified resistance over wide temperature, c...MrFixr55 — 12:03 AM
Electrolytic restuffing/internals
Look here: Philco-F676-124 Vlad95 — 08:02 PM
PT-6 finished!!
Well the 35Z3 doesn't have a tap on the tube heater for a pilot light, so in this set they have the dial lamp paralleled...Arran — 06:21 PM

[-]
Who's Online
There are currently 689 online users. [Complete List]
» 1 Member(s) | 688 Guest(s)
Avatar

>