02-16-2025, 01:42 PM
Well, selectivity today, with stations disappearing, is not such a problem for TRF as it likely used to be.
Although when they did appear first, there probably weren't that many of them either
As for the soud, like I said, if you take two radios, of whom the audio portion of the schematic uses exact same circutry: same tubes (3x27 and 2x45), same exact parts around them, same transformers, same....every ysingle thing (the sch was cut and pasted, literally), plus the RF part also uses same exact tubes (3x24A), the difference being with amplifying BC band frequency instead of 127kHz IF, and then you use practically the same exact cabinet (with the same exact grill cloth ) and the same exact speaker, guess what: they will sound the same.
Although when they did appear first, there probably weren't that many of them either
As for the soud, like I said, if you take two radios, of whom the audio portion of the schematic uses exact same circutry: same tubes (3x27 and 2x45), same exact parts around them, same transformers, same....every ysingle thing (the sch was cut and pasted, literally), plus the RF part also uses same exact tubes (3x24A), the difference being with amplifying BC band frequency instead of 127kHz IF, and then you use practically the same exact cabinet (with the same exact grill cloth
) and the same exact speaker, guess what: they will sound the same.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
