18-08-2020, 02:04 PM
I know what you mean about forgeries but, with the majority of users not really understanding the coding systems used on parts, it is easy for incorrect parts to be supplied, particularly to the home user. For instance, in a simple toy crystal set I bought for fun the diode was Silicon even though the handbook said Germanium. Although I have managed to avoid component problems by buying from reputable dealers the sheer volume of tales from many places, even with diodes, does make me think many are true.
Your point about 'Any design that depends on device selection is poor' is a very valid one. I think that this is maybe one good reason that the Japanese did so well with their methods late last century (thinking of their precision in engine manufacture as much as anything else). I don't think that it will ever really be totally lost though as, taking your comment of the 80mV difference not making much difference in the real world. Not to most people I am sure but it would perhaps make all the difference in a DX crystal set with a distant contact.
Tracy
Your point about 'Any design that depends on device selection is poor' is a very valid one. I think that this is maybe one good reason that the Japanese did so well with their methods late last century (thinking of their precision in engine manufacture as much as anything else). I don't think that it will ever really be totally lost though as, taking your comment of the 80mV difference not making much difference in the real world. Not to most people I am sure but it would perhaps make all the difference in a DX crystal set with a distant contact.
Tracy
