FROM HAM RADIO ESTATE. STILL HAS CALL NUMBERS ON IT. NOT SURE IF THIS IS A LINEAR, HAS A CRYSTAL JACK ON FRONT. HAS TUBES IN IT. LOOKS LIKE MISSING ONE TUBE. PLEASE SEE EVERY PICTURE, MANY MARKINGS AND NOTES. HAS RECEIVER AND ANTENNA JACKS ON THE SIDE. HAS MIC JACK ON REAR AND MIC. MIGHT BE A HOME GROWN KIT. USE ZOOM, SEE PICTURES,,,, NEEDS Q-TIP CLEANED. FROM A GREAT EBAYER. Looks to be 15 to 25 watts what something like a 2E26 amplifier tube. Please see all pictures and use zoom feature. Often the pictures describe the item better than words. I try my very best and list a lot of pictures, but are not posted as a “try it and see if it fits and send back ” type item. Please know if this is the item that works for you before you order. Thank You for your understanding on this. 30,000 + happy customers! Also please see the 11,500+ vintage radio related parts and other great antiques and oddities I listed. Old Radio’s are Fun and parts are getting harder to find! Just like radio parts? Thank you for you order and please follow my store. ! New items added daily. Also you can go into my store and pick the category for easy shopping. Best to you and Many Thanks, Mike.