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Ok so I am a newbie to the scene so please bear with me if I sound alittle dumb. I have bought a 41-100T I believe is what its called its portable one. It is untouched for many years from an estate sale in Maine. I have looked every where for information on its power source it looks like it was only battery operated with a P-60D-11I, is this the only way it was powered is there a way of hooking it up to a standerd wall socket? Next question is theres two sets of wires out of the chassis ablack and yellow on one side I assume its the battery ones even know there ends are gone; and the other is a group of them a red, yellow, green and brown it has a connection on the end with 4 little rods comming off of it. According to what I have read is that may be for the optional phonograph? Is there a way I could when repairing the wires for it wire in stripped rca cords. Could I hook an external device like my iphone into it, and no I am not modding the case or anything else just was thinking since we do not have many am stations and police band has gone digital over here. That I could use it as my night time iphone radio since its so beautiful.
Thank you for taking the time to read this.
Chris aka Steel2040
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City: Tacoma
State, Province, Country: Washington
The yellow wire is the antenna. Black is ground. Your four wire group is your battery, which has connections for B+ and filament. This set is what is called a 'farm radio', and only runs from battery. It was not designed to run from household AC, it was made for rural areas where there was no electricity available. The colors on your battery plug don't match the ones on the schematic that I have. Perhaps someone else here can shed some light on that. Please note that applying power (any power) to the wrong leads can damage your radio if it is not connected correctly.
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City: Sedona, AZ/Placentia/CA
Here is an example of a
farm radio which uses a 90V and 1 1/2V (combined in one case) battery. People have used 10 of the standard 9V batteries and a couple "D" cell batteries and packaged them together. The "battery" in this picture contains a small a/c powersupply to provide the voltages and plugs into the wall.
A couple of choices on how to get it running. As Brenda indicated make certain the wires are hooked up properly to the voltage source. I had a lot of fun making the "battery".
Regards, Jerry
[Image: http://i303.photobucket.com/albums/nn129...dio2-1.jpg]
A friend in need is a pest! Bill Slee ca 1970.
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Thank you for both your quick replys I knew I came to the right place. I have removed the chassis from the case and began to clean and inspect all the connections and wires the whole battery wire assembly will need to be replaced since all the protective coverings are broken from age. The yellow and black is a antenna is it an external or internal I have seen on some of the old radio pics a metal cage that ran the inside of the radios shell is that something that I should look for? And the battery I seen in Jerrys pic is beautiful, so your hooked the battery to an ac current? what kind of ac are you using and can that work with mine?
Thank you again Brenda and Jerry
Chris
Ps when I figure out how to post picks bigger then 500k ill post mine .
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City: Boston
Posts: 1,562
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Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
Chris, that is a nice looking radio and that cabinet will clean up like new with a little gojo cream cleaner (not the stuff with abrasives) and a little wax or something like Howards restorer.
I looked at the schematic for your radio and with my bad eyes have not determined what the the high voltage (B+) is. The low for the filaments is no doubt just 1.5V. Most were 90V. Someone may comment on this that is smarter than me. That would include everyone.
The "battery" note the quotes, is not really a battery but a power supply in a replica battery case. You might notice the A/C cord coming out of the back of the radio and an in-line switch to turn the supply off and on. I just leave the radio off/on switch on at all times and when I want to play the radio, I just turn the in line switch which goes to a normal wall plug to on.
One has a choice of an A/C power supply or stacking a bunch of little batteries together. I liked the A/C supply as I hate changing batteries. Depends a great deal on how much time you wish to run the radio.
As for streaming music to the radio, options such as adding an input jack for your computer or ipod, or perhaps a small home transmitter to "broadcast" your music choices throughout the house.
Your radio, running off of batteries originally will probably work without and lot of renovation under the chassis. It just needs a power source. Most were retired not because they died but because the house they lived in received A/C power. They bought a radio that would work off A/C.
Hope that makes sense.
I hope you realize that radio will pick up next to nada unless hooked to a fairly long wire for the antenna for local radio stations. Depending on your location. Major area of stations on AM, 6 feet or so. Boonies, a bunch more.
Jerry
A friend in need is a pest! Bill Slee ca 1970.
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City: Boston
Ok round two of pics , today's involve me dissasembling and light cleaning of certain parts.
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Pic 1. Chassis out and 1N5G and 1A7G tubes removed.
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Pic 2. Pic of the chassis and 2 1A5G's and 1H5G tubes and transformer?
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Pic 3. Pic of the chassis with the 2 1A5G's an H5G removed boy I have my hands work cut out for them.
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Pic 4. Underside of the chassis and how clean everything is under there but I noticed that there was some wires underthere that were not cloth covered which makes me believe it was repaired at some point.
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Pic 5. Underside again this time towards the potential meter and power side still very clean.
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Pic 6. This one of the copper dial plate it looked pretty clean but hey maybe I should try to clean it properly.
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Pic 7. This one of the copper plate cleaned properly from right to left right befor the 300 notice how nice it looks.
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http://imageshack.us/a/img163/6808/8f2d.jpg]
Pic 8. Fully cleaned man even with the sun down it seems to glow.
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By the time your radio was made, Philco had stopped using fabric-covered wires. Most of the wires in your radio were insulated with rubber, which hardens and crumbles with age. Some colors crumbled worse than others, and any exposed to heat crumbled badly.
Most of those rubber wires need to be replaced or sleeved before you power the radio. Ron Ramirez, our moderator, crumbles off all the rubber, unsolders one end of the wire and slips colored heat shrink tubing over it, then solders it up again. Easier by far than unsoldering both ends to replace the wire. He uses a particular diameter of tubing, I think. I don't know where he gets it in all the colors he needs.
Luckily, those battery-operated tubes did not get very hot, so the rubber wires were more likely to remain supple. You can tell which need to be replaced or sleeved by feeling them. It should be obvious. Any with cracks or that are stiff need attention.
The markings on most of those dial glasses were decals, so when you clean yours, keep the decal side away from water. Even rubbing with a damp cloth will damage decals. I've heard people say they've cleaned the decal side with mineral spirits, but I don't think I'd try it.
I've made new batteries to fit in old cardboard battery casings when I can get them. It's pretty easy most of the time. I don't know how to print new cardboard casings or make the connectors, so I "recycle" the old ones. I looked at your schematic, and the tubes are the same as my 41-80T, so I'm nearly positive yours needs 90 volts for B+ and 1.5 volts for A+. I built a battery for that one and am pleased with the little portable. With its push-pull output, yours should sound better.
Some people on the forum have come up with ways to connect iPods to old radios. Many radios were adapted by repair shops to add a phono jack, so that a radio could do double duty as a phono amplifier. You could do the same and plug your iPod into that. There are problems, I've heard, with impedance matching, but that is beyond my expertise.
Many of us use small AM transmitters. You can plug any audio source into them and broadcast it on the AM band. One called SStran is highly regarded. I have one. It works very well, so I can listen to anything I want on my old AM radios at home.
John Honeycutt
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That's a very nice looking radio! Looking at everyone's pictures, I think I feel a new hobby/addiction coming on...
