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Troubleshooting a 48-200
#1

Hello

First off thanks to everyone who help me last year with my slew of radios. The gifts were delivered for Christmas and they were a big hit !

I have a 1948 model 48-200 that I am working on. I need some help fine tuning the set.

Some background. I purchased this set from a repair person in Delaware who did much of my recapping last year. I only purchased the chassis. I have since found a case, but alas there is no antenna. The set has been recapped and also has been aligned by Radiotiques.

In looking around the web, I stumbled across a link to make a homemade loop antenna for these type of radios.

http://antiqueradios.com/forums/viewtopi...&highlight=

I followed the instructions and my results are shown in the image below. I used 28 gage wire which I purchase from Radio Daze. (http://www.radiodaze.com/product/13594.aspx )

One other complicating factor. Although the radio was purchased in about 2 months ago, I only had the opportunity to open it up the other day. I discovered that the speaker cone had been ripped during shipping. I repaired the cone using a techique found on this forum using glue and tea bags and the result is also shown.

I also have not checked to see if any tubes are weak.

Now the problem. I can tune stations in, but they are not sharp. Now to me if this were a "speaker" problem (because of the repaired cone), I would expect buzzing but not a lack of sharpness.

I also know that getting the antenna right, is very important. I have created a circumerence the same as the inside of the radio and have 17 loops. I tried counting the number of loops for a 48-200 and 46-200. Can anyone tell me how sensitive this is . If I am over or under by a loop or two, would this cause some distortion ?

What other things can I check for (I will test the tubes). Do I need to try to re-align (I have a signal generator).

I am going to try very hard to trouble shoot (and hopefully solve) this with the phorums help.

As always suggestions are welcome.


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Messages In This Thread
Troubleshooting a 48-200 - by winkydink - 01-24-2013, 11:35 PM
RE: Troubleshooting a 48-200 - by 7estatdef - 01-25-2013, 04:49 PM
RE: Troubleshooting a 48-200 - by winkydink - 01-26-2013, 08:40 AM
RE: Troubleshooting a 48-200 - by 7estatdef - 01-26-2013, 09:03 AM
RE: Troubleshooting a 48-200 - by winkydink - 01-27-2013, 11:34 PM
RE: Troubleshooting a 48-200 - by codefox1 - 01-27-2013, 11:39 PM
RE: Troubleshooting a 48-200 - by winkydink - 01-31-2013, 08:10 AM
RE: Troubleshooting a 48-200 - by winkydink - 02-05-2013, 10:42 AM
RE: Troubleshooting a 48-200 - by Steve Davis - 02-05-2013, 01:38 PM
RE: Troubleshooting a 48-200 - by winkydink - 02-05-2013, 07:54 PM
RE: Troubleshooting a 48-200 - by winkydink - 02-05-2013, 10:57 PM



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