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Old 19th Apr 2021, 8:26 am   #5
robinshack
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Join Date: Jun 2010
Location: Spalding, Peterborough, Cambridgeshire, UK.
Posts: 1,522
Default Re: Waveys Spring Clearout 2

Anyone into ctcss, the TL1 is a Pye Telecom service unit that generates a range CTCSS tones as well as a 1KHz tone. Used for modulating a sig gen back in the 70s and 80s, before the all singing ones were available to engineers. 2x 12 way freq select switches, I think, for selecting tones. Each tone had a preset freq adjustment pot inside, so could be changed to an alternative frequency if needed. Runs from external 12v dc supply.
Rob
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