Bought 39-72 - Printable Version
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Bought 39-72 - raymondl11 - 07-24-2011
Newbie here, I have acquired a Philco 39-72 and a Zenith 5r-312. I am just educating myself . What is a source of a variac? Also, how about the three batteries that are going to be needed for the Philco, are they still available? The antenna has some insulation falling off, only from the loop to the connections, how to correct that?
Some photos attached, any comments are welcome!
Note from site admin: Sorry, but the photos which were attached to this post are no longer available.
Re: Bought 39-72 - BILL - 07-25-2011
Build your own batters you need 1.5 volt "A" and 90 volt "B" dry cells batter "D's" work good and ten 9 volts I can run my vintage portables over 50 hrs on Dollar Store batter's cost you around $10
Re: Bought 39-72 - Radioroslyn - 07-25-2011
Hi Raymond and welcome!!!
Throw some batteries in that bad boy and you'll be ready for the beach or a camping trip!!! One a bit of a more serious note I'd recommend replacement of the paper and electrolytic cap in this guy. If not and you got some leaky ones in there it will run down your B batteries in a hurry. That gets expensive!!!
As for the original battery I doubt you can get it anymore and if you could it would run like $40-50 bucks. There's Bill the Batterymaker. He can build a original looking battery box to snap in your new 9V and D cells and it will plug right into your set. Don't know what it would run but he does nice work!
If you have milliamper meter hook in series with your B supply. If all is good (no leakage from your caps) it should draw about 8.5ma or so with 90V B and 1.5V A volts. The service into can be found here:http://www.nostalgiaair.org/PagesByModel/303/M0013303.pdf That's for a 39-71 there about the same.
Have fun w/it
Terry
Re: Bought 39-72 - Music in a bottle - 07-26-2011
Sure looks in very nice shape for its age.
Re: Bought 39-72 - raymondl11 - 07-28-2011
How many of those batteries do I need, and which components are those to replace?
Re: Bought 39-72 - Radioroslyn - 07-28-2011
Caps are 3,10,16,23, and 26. Batteries you will need 10 9v batteries and 4 D cells. Wire the 9v batteries in series to give you 90v. Wire the 4 D cells in parallel to give you 1.5v.
Terry
Re: Bought 39-72 - Arran - 07-29-2011
If the battery leads are crumbly I would recommend replacing them or having them replaced, if the are still good you can get by for now. You can run these battery sets either by rigging up batteries like the 9 volt jobs in series, with a pair of 1.5 volt "D" cells in parallel for the "A" side or you can try building a battery eliminator from one of the many plans out there.
Regards
Arran