|
Title: Motorola transformer 25B880553 ID Post by: Opcom on June 01, 2024, 03:56:05 AM Here's one for those who have messed with or parted out old Motorola stuff
The small black end-bell type transformer has "25B880553" stamped into one end bell and "6AK6 output" written in machinist chalk pencil on the other one. I have found Motorola part numbers like this, but with a dash instead of the letter as in 25-880553, but no joy on the part number either way. Has anyone an idea what this might have been used in? I'm not too familiar with it but I think it is from the 50s. I realize this is off track but a 6AK6 can make 1W, so at lower power levels it could be a good line output. Title: Re: Motorola transformer 25B880553 ID Post by: WB6NVH on June 03, 2024, 08:08:21 PM The letter is used by the factory only, but when you would order a part from Motorola you would put a dash where the letter was. For example, a manual would have a part number on it of 68P8xxxx etc. but when you would order it you would write it as 68-8xxxx. Useless trivia today. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
I have old parts pricing books indexed by part number but they have no useful info. All it will say is "Transformer" and a price. The transformers are more specifically described in the equipment manuals, but there are thousands of those and it would be a herculean effort to find it that way without better clues. I also think the Motorola consumer equipment division may have used the same style part numbers. |