Quote:
Originally Posted by jr_tech
Page 11 of the manual describes how it is made... just a length of shielded cable with a 1/4 " phone plug on one end and a probe tip on the other.
It is used after the detector stage of the radio where audio signals are present, where the rf probe is used to pick up and demodulate signals in the rf and if stages. Useful also for troubleshooting audio amplifiers.
The T-3 can be used as a speaker/output transformer substitute, and can also measure wattage consumed by a device under test. Fun item for the vintage test bench! Eye tube indicators are fun to use.
The T-3 was a handy device in its day, but I suspect that most would just use an oscilloscope now.
jr
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I see Heath made the same tracer for a few years. The one shown on the manual website is a newer model than mine, but still uses the same circuit. It still uses the JAN war surplus tubes.
