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I do like the sandpaper and clothes pin idea but I have the Knipex Enamel wire stripper presently on Amazon for $19.41.

Finished my high band QDX over the weekend, built for 12V power. So far only one, hopefully inconsequential, build mistake - using the 28 gauge wire to wind L2 instead of 22 gauge. Per the QRP Labs

Personally the simplest solution in this grouping is sand paper in a clothespin. https://www.youtube.com/watch?v=97Bw0KYDzo0 Mike W9MDB

After reading through this thread earlier this morning and then doing some repair work on another piece of equipment, the penny dropped and/or the light bulb when on. Maybe it's a tool you already

My tool of choice is/was the $20.00 one, not the seam stripper. Just a note of clarify my previous post. Ed N7SNT

Not to take anything away for the creativity shown, but just pull the wire through a scrap of sandpaper between thumb and forefinger.? That removes all the varnish and leaves you with a shiny wire

I’m using one while building a K2 with the 100 watt amp kit (about 30 toriods wound)and I’ve only broke 1 wire while cleaning off the enamel coating, doesn’t clean 100% but good enough to tin

... or for the n-channel MOSFET like BS170 something like this: https://images.app.goo.gl/xRSo5Mht3JDyiGfT6 73 Bojan S53DZ

Hi Hans, Thanks for your reply and I hope you enjoy your family vacation. I'm very grateful for the "Assembled Kit" option at a reasonable cost. 73, *Howard* *W6ZZ*

T1 is most likely he cause, it MUST be wound correctly as per the instructions AND the ends of the copper wires need to be cleaned of insulation DO NIOT RELY on a hot soldering iron to do the job,

I dunno, $20 for the 'proper' tool versus 'found it around the house' or a dollar store item, probably depends on your circumstances, but I applaud Bruce's ingenuity! 73, Willie N1JBJ

This is not a DIY stripping tool: https://www.knipex.com/products/precision-tweezers/stripping-tweezers-for-coated-wire/stripping-tweezers-coated-wire/1511120 but works very well for stripping small

P.S. there has been considerable movement of the list... QRP Labs team are still there in the office producing and shipping assembled radios as well as the normal kit orders. 73 Hans G0UPL

Hello Howard I'm in the middle of two weeks' family vacation right now and I can't update this until I get back to the lab on 06-Feb-2022. 73 Hans G0UPL http://qrp-labs.com

Very nice, Ed I had ine if those same Motorola Communications analyzers for several years. 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl

Thanks, that was the clue I needed. Just need Hans to update the build Operating Manual. 73, Warren. -- This email has been checked for viruses by AVG antivirus software. www.avg.com

Dear all, On most class C and D amplifiers the IRF510 is followed by a trifilar or bifilar transformer toroid.? ?Can someone please explain what the function of the this type of transformer is.?

--------------------------- Assembled kits order status --------------------------- *PAGE LAST UPDATED: 20-Jan-2023* Thanks/73, *Howard* *W6ZZ* *http://www.qrz.com/db/W6ZZ ( http://www.qrz.com/db/W6ZZ

I was thinking about the physics and hassle of removing enamel from the wire we use for toroids, and suddenly this came to me. It works GREAT for me on the larger diameter wires, +/- 24/26 guage. It

Old school frequency spectrum analysis for 40m but very cool if you see this pic Hans: Ed Tink