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Reason I asked it I did a full recap of a Robyn sb520d worked okish before also changed all the c1419s to that part and now have no am modulation I read that tr26 I think it is can cause this just wanted to confirm this part isn't the issue.

I'll look it over again wish I could find a top and bottom view of the board like a Sam's photo fax.

found the post finally that suggested the 2n6487 but when you start trying to cross it it doesn't come back to any of the other mentioned transistors so my question is was this an error on the part number Loosecannon?

Mostly crt and lcd to led monitor conversations as of lately. I did do a couple CD jukes and Mrs. Pacman or 2 this week.

Not so much a mod but an issue wasn't sure where this topic belongs. So I've got a second gen of the original 2970s the one with out the battery for cpu memory uses a cap instead. When plugged in turned on it will not receive or transmit for about 10 mins at room temperature for days doesn't...

Well no I did add talk back but regardless of if it's on or off the problem persists it's not so much a pop more like a free key up ping . None the less kinda annoying. But it last a couple seconds and goes away. I've done a very extensive amount to this radio in hopes my rx would be cleaner...

After looking at unit 399s pages that's someone posted can't remember who but thanks for that. I see one is there for PC-196bd not the ab which is what the 138 uses anyone think this would be easily adapted?

99% sure I changed every electrolytic cap in the radio but might give that a go it does it regardless of which microphone I use.

ever figure this out I have one doing the exact same thing.

Someone remind me where I read about upgrading the am and other regulators on these to a 2n6487g? I Was looking at this it doesn't cross back to an nte152 or ecg66 like other sites have suggested so where did I get this one from??

My am only radio has no mode switch is a mobile on a variable power supply I have a lot of options!

Well the other option would be a 1969 and some kinda npc or the other one Aystemic or something like that handy Andy was doing with pc122 or similar. Which I've also not seen on any pll02a radios the goal is to get out fairly well in town on the wire antenna it's the only option at work. If the...

How would one go about modulating the predriver in a 29? I used to upgrade the predriver to a 1973 and then 1969 final and see 30-35 watts out of those. Also my initial question still remains about the ge am only radio which has no mode switch problem to over come its am only I would think...

I'm well aware of rfx75 and stingers and such this is how I want to do it just enough to get 20-25 watts the mosfet should do the trick just fine this is only for my shop radio on a dipole antenna for about 10 blocks range.

It's the ptbm050c0x it's not a part failure it's a want to upgrade the current 1306 that's in there now and the c1846 isn't likely to get 20 watts out put.

Anyone have alignment ino and schematic for this damn radio?

Old being brought back from the dead but what about a mod fopr say am only pll02a radio like the Ge. 3-5812a?

Sure did Unit 75 I've got filter 1 left and filter 2 and fet2 yet to try at this point.

Best I got

I'm going to assume this is an agc issue I have to have the volume full boar to hear any normal static i can hear my locals blasting me out of the chair when they key up. When the other stations I talk to 20 miles out key up I can hardly tell some one had recapped the radio with junk Chinese...