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Old 14th Mar 2018, 6:06 am   #2
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 2,931
Default Re: Heath STR-2044 Telephone Line Analyzer manual wanted

I don't know if it's any use, but the Elenco TT400K manual looks to be for a somewhat similar unit and it available here :

It might give you an idea of what is going on inside your Heathkit unit.
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