Recent Posts

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1
Test Equipment / GW Instek GOS-6103
« Last post by Boudreaux in Eunice La. on December 15, 2020, 03:25:53 AM »
I just picked this unit up for a song and a dance, 30 dollars to be exact, it cleaned up real good and looks like new.....

 This is my first non tube scope , now I'm giving away my age LOL.... I had a small stroke 9 years ago or so , and I'm getting back into the electronics game.....

But that's not my issue .....  My calibration point is only showing 1 Volt....   Any suggestions ????
2
Electronic Video Blog / Re: #95 National NCX 3 Repair Part 1 Blooper to follow
« Last post by K9POW on November 30, 2020, 05:44:47 PM »
Howdy Buddy,

I really enjoyed you working on this radio.  I think the electronic build up on the negative side is due to electron flow from positive to negative.  Maybe you can answer me a question.  I just recently got my upgrade from Technician to General Ham license.  I got a Kenwood TS-430S HF rig with a dedicated power supply PS-430 to go with it.  If I want to use 10 meters and pull up a 10 meter repeater how do I use a CTSCC tone since my Kenwood radio has no CTSCC tones???  Thank you for all yer videos.

W Rusty Lane K9POW in eastern Tennessee
3
CB Radio Repair Forum / Re: Jc penney 6241 off freq
« Last post by Snow Bird on November 17, 2020, 02:49:27 PM »
Check your Caps At the Mixer They are getting old and can go bad
4
CB Radio Repair Forum / Jc penney 6241 off freq
« Last post by Kevinrea on November 15, 2020, 11:43:23 PM »
Hi guys,
I have a JC PENNEY 6241 radio.
It is a 40 channel AM SSB radio.
When I received it the transmit did not work, I then proceeded to undo all of the modifications such as clarifier extra channels and put it back to stock. I believe I got everything out, now It transmits and receives but it's about 7 KC's low on frequency, checked with freq counter and my spectrum analyzer, idea of what I might do to get this thing on freq ??

Here's a link up on one of my websites to the same photo facts for this model, if you guys would like to dig into the schematic.

[https://hamlogbook.com
/SamsPhotofacts235forjcpen ney6241.pdf]

Thanks,
Kevin Rea
Lancaster, Calif.

5
Manuals / Re: Mfj9406
« Last post by The Radio Shop on October 18, 2020, 07:04:53 AM »

Semi homebrew rig

http://gokarters.com/smf/index.php?topic=1728.msg14902#msg14902
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Electronic Video Blog / Re: #79 Eico Model 147A Repair and Test
« Last post by The Radio Shop on October 18, 2020, 07:03:18 AM »
You can use either.
I get my caps from Just Radio
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Electronic Video Blog / Re: #79 Eico Model 147A Repair and Test
« Last post by mrkeetz on October 15, 2020, 10:24:28 AM »
Hi folks. I know this is an older post, but I found the video very interesting. I recently dug my Eico 147 out and dusted it off. Plugged it in, and immediately got the bad hum. Trying to source the filter caps, I noticed a huge difference between prices with radial and axial caps. Am I missing something? Would I be able to get away with just using radials?

Any help is greatly appreciated.
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Home Brew And Tech Forum / Re: The Pine Board Project (Metal Chassis Version)
« Last post by The Radio Shop on August 31, 2020, 07:22:04 PM »
Thanks,
I could not stand seeing that scratch. So removed the front panel, sanded and repainted it.
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Home Brew And Tech Forum / Re: The Pine Board Project (Metal Chassis Version)
« Last post by Toolmanchris on August 30, 2020, 05:57:55 PM »
Nice work as usual. Shame about the scratch though, been there and done that many times  :)
10
Electronic Video Blog / Re: #118 Yaesu FT-2800M No Power On Repair
« Last post by The Radio Shop on August 22, 2020, 07:08:00 PM »
That sounds like the RF final amplifier transistor is out.
This is a RF module. Sometimes the ceramic substrate cracks.  You can remove it, take the plastic case off and see if you can see a crack.

Have a look at this page for an example.
https://www.rftechnology.com.au/downloads/EB0405.pdf
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