Are mineral spirits different from turpentine? I ask because mineral spirits remove a particularly tenacious variety of 3M adhesive, something nothing else would touch.

Sorry, this wasn't intended to get loos in public.

Hi Chuck, Not to worry. My NPN transistor replacement on the Nakamchi Receiver 1 worked great. Apparently this was the only thing wrong with it. And then when I discovered that the Yamaha NS A575's in

I find Mouser an excellent source for my onesie-twosie orders. I confess to a bit of discomfort with sending them orders for $25 worth of components which cannot possibly be profitable for them. For e

excellent. thanks much. john

Wow, Chuck, it was worse than I thought, but it sounds like you have prevailed. john

the next step will be to discover the unobtanium part needed in one of the FG504's is also bad in the other. john

with the FG 504 set at start freq 10, stop freq 40, multiplier at 10^2, sweep off, measured on my 2445b, Sine freq 982.3 Hz, Sawtooth 975.9 Hz and Square wave 24.5 mHz. The square wave is an asymmetri

the pegged frequency is only on the square wave. I looked at it briefly and it isn't square but triangular. fwiw, I'll check frequency at the 10to the second setting and compare it with what I'm getti

I now have two FG 504's. The first doesn't oscillate despite all manner of exercising the buttons and switches and has a defective VAR pot for the frequency vernier - knob turns through 360 degrees. T

The SW503 seems scarce. Does anyone have a working unit which they might part with for a modest price? If this is a goofy request, let me know why.

Those spools of solder are funny - in our sort of use they last a lifetime. I still have at least 80% of the spool I bought in 2005 to build my Elecraft K2-100 and the antenna tuner. All the projects

Yes.

looks good to me and would save a lot of print time over a solid panel. john

Hi Michael, I use .12 layering for something like this in PETG, but of course it makes the print time much longer. I don't have any 'junk' modules to disassemble to see what is involved in replacing t

Hi Michael, What are you using for layer height? Are you using PETG? I suppose drawings for the hole locations are unavailable, but.... FWIW, I've had great success 3d printing jigs for drilling holes

Look up Josephine (Josie) Webb. EE graduate of Purdue circa 1940. She's still with us at 100. Dad worked with her at Westinghouse in East Pittsburgh during the war. She was regarded as the sharpest en

Stupid me. I print them out and tape them together. Sometimes this doesn't work too well because the scans are not all the same scale. The print routine for our hp-Envy has a scaling function, which c

I've been successful replacing SCSI drives on a 1993 Sun Microsystem SPARCSTATION 10 with a SCSI to MicroSD Card adapter. The difference between the rejected heat of the two 2 gig SCSI drives and that

Michael, These are very nice. and SUBSTANTIAL. thanks much for posting the STL's. I thnk I'll make one for the 2445b I use the most. best regards, John Ferguson