Hi Joe - as I have mentioned before, I've been engaged in electronics and radio work since I was a youngster and over that time period, I have looked at all manner of cct. diags., but I have never seen the Greek symbol [lower case omega] ever used as a symbol for resistance - until now! Now if that symbol was in use in the 1920's - 1930's, that would explain it: my experience with kit from that era is very thin.
Ah! The value of membership of a radio / electronics forum - there's always something new to learn!
Further thought; ref. your cct. diags.: I see that on the first one, both the lower and upper case omega symbol is used; on the next two, only the lower case version is used.
Idea: since very early wireless sets used wire-wound resistors, was the symbol [lower case omega] used to denote a wire-wound 'resistance' - as they were then called - as opposed to a carbon type - or perhaps vice-versa ?
Al.
Ah! The value of membership of a radio / electronics forum - there's always something new to learn!
Further thought; ref. your cct. diags.: I see that on the first one, both the lower and upper case omega symbol is used; on the next two, only the lower case version is used.
Idea: since very early wireless sets used wire-wound resistors, was the symbol [lower case omega] used to denote a wire-wound 'resistance' - as they were then called - as opposed to a carbon type - or perhaps vice-versa ?Al.
