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JC Penney 6241 SSB Radio AC/DC 981-6241

Happy_Hamer

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Mar 22, 2001
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OK so EVERYONE says this is the same as the Sears Slant face and to find the info on SAMS Photofact 235 but I cannot find this

It is not the same as the Sears Slant face, well this one isn't ??????

I need to align SSB TX and SSB Power, I can't find the correct "pot" to turn.

Any info someone can help me with

It does have the Hitachi board
981-6241.jpg
 

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I know this is kind of an old thread, but I have a question regarding the 6241. The one I have right now works fine on AM; however, the sideband seems to have a 8-10 watt carrier. I have ensured that there was no background noise while I was testing, which may have simulated a carrier, and I was not using a power mic. I have also checked the mic for shorts that may have been causing a squeal, but no luck there either. Furthermore, while it was being used on sideband there is hardly a discernable signal; barely a whisper, even though the other stations are not more than 2 miles away. The radio worked perfectly for a couple days and is now exhibiting these symptoms. I am going to check the carrier suppression for sideband, but I'm guessing, due to the sudden onset of the problem, that this is not the issue.

Any suggestions would be greatly appreciated.
 
If you had a frequency counter in line with the radio when it does this, I'll predict the frequency you see is not anywhere near the channel you've selected.

We saw this behavior when the final bias was set too high, or the ground screws around the edge of the circuit board would come loose with age.

Maybe.

73
 
If you had a frequency counter in line with the radio when it does this, I'll predict the frequency you see is not anywhere near the channel you've selected.

We saw this behavior when the final bias was set too high, or the ground screws around the edge of the circuit board would come loose with age.

Maybe.

73
Unfortunately, I do not have a frequency counter, but I would agree that it is most definitely not on frequency. One other thing I noticed after unkeying the radio on sideband, the receive audio is non-existent for at least three seconds and then slowly starts to return back to normal. Could all these problems be caused by old and dried out capacitors?

Thanks for the feedback.
 
Yes and a dern good place to start!

73
David

Well, I found the problem. The mic socket on the radio was loose, and apparently that was causing problems with grounding. I tightened the socket and changed the mic, which made the problem disappear.

Thank you for pointing me in the right direction.
 
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Job well done! Never overlook the "simple things"!

Well, I found the problem. The mic socket on the radio was loose, and apparently that was causing problems with grounding. I tightened the socket and changed the mic, which made the problem disappear.

Thank you for pointing me in the right direction.
 

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