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Antenna Transformer Model 60 Philco
11/5/2005 12:17:27 AMBill
I need a good Model 60 antenna transformer. Willing to pay thru the nose...well not exactly. If you do have one in a junker cut out with as much leads remaining as you can.
11/6/2005 10:25:53 AMJohn
:I need a good Model 60 antenna transformer. Willing to pay thru the nose...well not exactly. If you do have one in a junker cut out with as much leads remaining as you can.

Hi Bill,
The guy (Gary B. Schneider) at web site "play things of past" might have it but he has a min. order of $20 so if you have other things you could order with it you could meet the $20. His e-mail is gbsptop@aol.com and he has loads of radio stuff. John

11/7/2005 12:45:52 PMBill
Thanks John,
I checked and my p/n 32-1047, which I should have posted, is not listed. I had excellent reception and tracking on AM until I messed something up real bad trying to get short wave to work. Before, the primary was opened, reads ok now but only two strong stations come in. Thought at first the 75 tube went bad. All tubes are as good as can be now and I even sub out the 6A7 as one of the things recommended if all else fails. I don't read open on the antenna coil secondary from 6A7 to the 78 but it only reads 48 ohms. Wires keep breaking and actually I'm just worn out trying to figure what's wrong. And too I may just wire in a am coil to see if I can get back my am. I was really feeling good at one point when the set played so good on AM. Oh well that's life.
Bill

::I need a good Model 60 antenna transformer. Willing to pay thru the nose...well not exactly. If you do have one in a junker cut out with as much leads remaining as you can.
:
:Hi Bill,
:The guy (Gary B. Schneider) at web site "play things of past" might have it but he has a min. order of $20 so if you have other things you could order with it you could meet the $20. His e-mail is gbsptop@aol.com and he has loads of radio stuff. John

11/7/2005 4:36:37 PMThomas Dermody
If you want, just be patient. Relax a bit and set the radio aside for a few days. Then take your time and remove the coil. Examine it carefully and if necessary, rewind it. The coils in this radio are really quite simple. The most common failure is the oscillator primary (plate coil). This one has very thin wire. The antenna coil is pretty simple and uses coarser wire.

Be very gentle with the form, as it can be brittle. Both in my radio are very solid, but they can dry out and crack easily.

I do not recommend that you remove the coil right away, though. When a radio ticks me off, the last thing I want to do is remove a coil. Lots of wires! Also, check out the band switch. It shorts out coils for short wave, and normally does nothing for AM, so if something on it broke, it'd likely affect short wave only. However, sometimes parts break in this switch and short out one or two coils, which would be shorted out for short wave anyway (sorry for so many shorts!). This would allow short wave to operate normally, but AM reception would not work well if at all. Only a few stations would come in, if any. You might even receive short wave stations from a different band that the radio doesn't normally tune in. Also, if your short wave operates properly, and you suspect a blown coil, this might narrow things down for you, too. Keeping in mind that certain coils are shorted out for short wave will lead you to check those sections for faults, as they are only used for AM reception.

An interesting note on these coils: it is odd that certain coils are actually shorted out for short wave, because normally if you short out a section of a coil, it makes the remaining operating section operate extremely inefficiently. I suppose if the coil was calculated out properly, though, the shorted out section could resonate and actually assist the remaining coil. Odd design, though. Amazingly the 60 does operate quite well. It lacks selectivity, which is mainly due to the lack of a tuned secondary on the last IF. Placing a trimmer here won't solve your problem, either. I found that I had to build a sort of wave trap (condenser and RF choke) and place it on the secondary. I forgot how I did it, but I can go and look if anyone is curious. At any rate, placing a trimmer across the secondary as is normally done in other radios does not improve selectivity, but actually slightly ruins sensitivity. Putting in a wave trap of sorts, though, and tuning it to 455 KC (or whatever the IF is...I forgot), improves selectivity quite a bit.

Thomas

11/7/2005 10:58:15 PMDoug Criner
Hi, Bill. I hate trying to fix coils, since I'm all butter fingers.

Look at this tip, and see if it might be a quick-and-dirty solution worth trying: http://antiqueradios.com/forums/Forum10/HTML/000263.html

11/9/2005 12:28:56 PMBill
:Hi, Bill. I hate trying to fix coils, since I'm all butter fingers.
:
:Look at this tip, and see if it might be a quick-and-dirty solution worth trying: http://antiqueradios.com/forums/Forum10/HTML/000263.html


Thanks Thomas and Doug,
I got my AM back now. With a 10 foot long wire antenna and even with the fluorescent lights on in the shed the reception is very good all over the dial. Plenty of sound. I haven't worked with the antenna coil yet but took more resistance measurements in other areas. The oscillator coil was opened. I did a rewind the open part. I'm not going to "troubleshoot" my troubleshooting as to what caused AM to be good before I messed up the antenna transformer if the oscilator coil was opened. Beats me. Another thing I did was put compensating condenser Number 11 back in the circuit. Service Bulletin 164-A indicated to remove it.

Thomas one coil in the antenna is a lattice wound. Guess which lead I broke on it when working on the other windings, impossible for me to dig out. I replaced with a very similiar size. I don't like working on coils either Doug. I have some arthritis in both hands but it's these trigger fingers in both hands that give me trouble. I've finally decided to get surgery. But even before my hands got bad I was a cheater. I most always have enough old coils to try as replacement rather than rewind. I have even taken sections from pie type coils. A little trial and error. Someday I may work on the shortwave problem...after surgery.

Bill

11/10/2005 6:43:08 PMDoug Criner
Bill, you mentioned your SW band. I wonder if the Model 60 is similar to the Model 89. The 89 has a kludge-type SW band, which functions based on a harmonic. In the 89, it's basically only good for the old police band.


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