11-14-2020, 06:11 PM
A little more research and I found that the dual variable capacitor on this set is 18-479pF for the Main Tuning and 19-165pF for the Local Oscillator.
I have some 28ga enameled magnet wire and so I understand that the AM band is 535 to 1705kHz.
So, maximum pF at 1705kHz would be 18.191uH.
Now, if I went to a website like the one below and calculated a 18.191uH coil, does the DC resistance mentioned in the Photofact for this Philco 48-230 Radio of 2.5 Ohms have to be observed? Can other resistances be used? What is to be gained or lost by other resistances?
http://tesla-institute.com/%21app/sim/acic.php
I have some 28ga enameled magnet wire and so I understand that the AM band is 535 to 1705kHz.
So, maximum pF at 1705kHz would be 18.191uH.
Now, if I went to a website like the one below and calculated a 18.191uH coil, does the DC resistance mentioned in the Photofact for this Philco 48-230 Radio of 2.5 Ohms have to be observed? Can other resistances be used? What is to be gained or lost by other resistances?
http://tesla-institute.com/%21app/sim/acic.php
