[Jim Ryan 76]

Hello everyone!

I have a Philco that I believe is a Model 71H Code 221. The PhilcoRadio.com web site shows several 1932 radios that look like this one http://www.philcoradio.com/gallery/1932b.htm.
They include the 43H, 47H, 71H, & 91H.
Since the radio I have is a 7 tube set, the 43H is out since it is an 8 tube set.
The 47H is a DC operated set and is therefore out.
The 91H is also out since it is a 9 tube set.
This leaves the 71H. Since there are two speakers this is probably a Code 221.

Unless there is another radio that looks like this that I've missed, I think that this is it.
If I'm correct I'd appreciate any feedback on this radio that anyone would care to share.
If you've worked on it or have any tips, I'd very much appreciate your contribution.
Images of this unit are available on http://www.flickr.com/photos/jimryan62/page4/ (last 3 images) and
http://www.flickr.com/photos/jimryan62/page5/ (1st Photo).

Thanks for your time.
Jim Ryan

[Ron Ramirez]

Yup, it's a 71H

No shadowmeter, 7 tubes, AC operated. So it is an early 71. (Late models had shadowmeters and individual tube shields instead of one large tube shield on the left of the chassis, facing the rear.)

Is your set's large tube shield missing? The model number and tube layout is on this shield.

Edit: Just looked at the last photo. It does appear to be a 71 with twin speakers, code 221, 223 or 226. Code 226 will have a shadowmeter, which yours does not. Codes 223 and 226 will tune down to 520 kc while Code 221 only goes down as low as 550 kc. Also, Code 226 has individual tube shields on the left instead of one large tube shield.

I wonder why someone added extra Fahnestock clips on the back of your set's chassis?

Can you provide a good photo of the back of the chassis, showing the entire chassis, please?

[Jim Ryan 76]

Ron:
Sorry about the long delay in replying to your posts. A torn up knee, Real Estate issues and Work tasks got in the way. But I'm retired now, and spending more time on my Radios.

The only tube shield on the 39/44, but nothing on the 42 next to it. There is a mystery clip on the front of the chassis and another on the rear left that may have had a tube shield attachment at one time, but not now. The tube layout is an RCA Cunningham Radiotron 39/44, a National Union VT-36, an RCA M-R 39/44, a Philco 37, a Philco 39/44 (with shield), a Philco 42, and a missing tube (80, I believe).

There is a number stamped into the back of the chassis: 038753. I have not found a reference for this chassis number, so I don't know if that will provide any further information. I've posted a shot of the back of the chassis on flicker - http://www.flickr.com/photos/jimryan62/4...879385307/ (though I believe you may have seen this one before). If there is a view you'd like, just let me know and I'll take it for you.

[Ron Ramirez]

Your 71 is missing its large tube shield, that goes over the RF, 1st det., and IF tubes (left side of chassis when viewed from the rear).

Here are some pictures of my "Super" 71 which shows the shield you need:

[Image: http://i326.photobucket.com/albums/k420/...C00747.jpg]
Back view of chassis with shield in place

[Image: http://i326.photobucket.com/albums/k420/...C00748.jpg]
Chassis with shield removed

[Image: http://i326.photobucket.com/albums/k420/...C00749.jpg]
View of shield

[Image: http://i326.photobucket.com/albums/k420/...C00750.jpg]
Another view of shield

[Image: http://i326.photobucket.com/albums/k420/...C00751.jpg]
For comparison, my 71 chassis with shield removed

Your next job is to find a replacement shield. I think Dick Oliver may be able to make one? Worth a try:
dolivears AT aol DOT com

Edit: Sorry to hear about your knee and I hope you have recovered from that. I tore a meniscus in my right knee 10 years ago, no fun at all and it took awhile to recover. Arthroscopy had to be performed.

[Jim Ryan 76]

Thanks for the quick reply, and the shots of your "Super 71" If I can figure the dimensions, I may try to fabricate one. I'll certainly send an eMail to DIck Oliver to see what getting one mad will cost. Two things that I noticed about your radio are:
(1). the Copper used on the chassis, and
(2). how clean the chassis is.

Do you completely disassemble and restore your chassis, or work on partially de-populated chassis?
Was the copper original or is that your modification?

My chassis has no copper, corrosion, and shoulder tubes rather than bulb tubes (RCA Cunningham Radiotron 39/44, a National Union VT-36, an RCA M-R 39/44, a Philco 37, a Philco 39/44 (with shield), a Philco 42, and a missing tube (80, I believe)).

Thanks again for your feedback.

[Ron Ramirez]

Jim

The original electrolytics used on the Model 71 were made by Mershon. They have copper containers that look really cool when they are polished up. A spray coating of clear gloss Deft, after polishing, will preserve the polished look indefinitely.

I just looked at your 71 again...I see that the electrolytics on yours were replaced with aluminum can electrolytics. No surprise, really.

I do not normally go to all the trouble I did on my "Super" 71. But this chassis was originally a rust bucket. I cleaned it up, painted it, modified it to use a 6A7 tube as 1st detector instead of the original 36. Every wire is new. Every part is new save for the B-C bias resistor, the tuning condenser, antenna and RF coils, dial scale, on-off switch, tube sockets and power transformer. The volume control and tone control aren't new, but are not original to the set, either. The oscillator coil was completely reworked - and rewound - by me.

I put globe shaped tubes in this set where they could be easily seen, for appearance only. Note that the 39/44 tubes and the 6A7 are ST (taper-top) style. The 6A7 was never made as a globe, as far as I know. The 39/44 tubes were, but since they are hidden under tube shields, I used ST types. The 71 had all globe tubes when it left the factory in 1932, and of course they were all Philco brand tubes.

More details here:
http://philcoradio.com/phorum/showthread.php?tid=709
http://philcoradio.com/phorum/showthread.php?tid=1035
http://philcoradio.com/phorum/showthread.php?tid=1244