Offered is an HP 82483A Survey Pac for the HP 71 calculator.  The module comes with an original hard copy manual that is in very good condition.  The module has been tested and works.

 

You're bidding on this Marshall Park Series model G15R CD. As pictured it shows signs of age and use including the top strap having the scuff shown. The amp works and sounds great but the Bass pot is

 

Here is a rare XF1 that tests well. It is a double halo getter with a larger base and larger plates than XF2s. These are some of the best sounding tubes ever made. Transconductance reads 5400 where 38

 

Pair CHICAGO F-65 6.3V CT @ 5.5A Filament Transformer Made in USA by CHICAGO STANDARD You are bidding on One CHICAGO F-65 6.3V CT @ 5.5A Filament Transformer in excellent working condition. Measured 2

 

You are bidding on Telefunken E88CC, gold pin, professional ,ECC88 ,6DJ8 ,6922 tubes . NOS used . Tubes are fully tested with calibrated AVO VCM 163. Tube test data: FIRST TUBE = Anode current =17.5mA

 

You are bidding on 2 pcs. Hytron 6SN7 GT Tubes. Used.Tested on Funke W20: 9.6mA / 9.2mA10.0mA / 10.0mA"good" starts at 5.6mA. Thank you for checking my other listings. Import duties, taxes, and charge

 

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

 

The Harman/Kardon 50+ is a 1973 AM / FM Stereo - SQ Matrix quadraphonic receiver that can be switched between quad and stereo using a control on the back of the unit. In stereo the system puts out 25

 

Vibroplex Bug No. 141564

 

Three Mullard made and five Amperex Bugle Boy 6BM8 ECL82 tubes, five branded made in Holland and three branded made in Gt.Britain, all eight have the Philip tube type code of OG on the top line of cod