Unbuilt heathkit HD-1* harmonic distortion meter* unassembled in original Box. Kit is sold as pictured. All kits are sold as is and are non-refundable. While it is assumed all kits are fully complete

 

NOS Sylvania 5Z3 Rectifier In original box Tested Bottom box getter,Dated 1941 Tested on my Eico 666 Tube 1 98% & 99% PLEASE NOTE: I have been on eBay for over 10 years with a flawless sales recor

 

Vintage Metz 421 Dual 1019 Turn Table Record Player with Manual Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge

 

This calculator is in excellent working condition it does need new batteries & it has a couple minor scratches above the screen. If you have any questions send me a message I will respond within 2

 

2 new old stock HY31Z tubes, one has black 'gunk' on it from the wrapping - - $8 S/H to Continental U.S. PLEASE READ ALL TERMS & CONDITIONS AND DESCRIPTION PRIOR TO PLACING A BID. PLEASE ASK ANY Q

 

magnamonster Store old technics stereo model su v 707 amplifier , turns on lights work but i connected speakers to it and got no sound.i am selling it as is for good parts or someone could fix it.has

 

You are bidding on a Vintage 1964 Heathkit Electronics Catalog. This is catalog #81/40 and it is used and in good condition. It has 98 pages of neat Heathkit items that were available for that year. T

 

I was absolutely amazed when I tested these they have fantastic sound, Not only do they have the three speakers showing on the front there is also another on the bottom base of these. There is a chip

 

THIS AUCTION IS FOR A PAIR OF VINTAGE RCA CUNNINGHAM RADIOLA 80 VACUUM TUBES. THESE TUBES ARE PART OF MY 40 YEAR COLLECTION AND THEY TEST VERY STRONG. EACH TUBE IS RATED ON A SCALE OF A MAXIMUM OF 100

 

2 NOS RCA 6C8G Vacuum Tubes Vintage 1942 Audio Twin Triodes These new-old-stock tubes have been tested for mutual conductance. On my Heathkit TT-1 tester they read 1600/1600 and 1650/1700. A reading o