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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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10th Feb 2019, 12:06 am | #1 |
Rest in Peace
Join Date: Jun 2006
Location: Chard, South Somerset, UK.
Posts: 7,457
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TF2700: variant ident. by serial number?
Marconi TF2700. There seems to be at least two variants of this instrument: the early model (1962), which uses GET102 and OC200 transistors; the later one (1974) which uses ACY17 and BCY72 transistors. (There may be other variants, but I could not find any references to such.)
My question is this. If the serial number (of format nnnnnn/mmm) of a particular TF2700 is known, it is then possible to identify which build type it is of the two? All replies will be much appreciated. Al. |