Quote:
Originally Posted by Neil Purling
I assume that the AM-FM kit Davewantsone made was the Paensonic.
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Yes the radio was a Paensonic. I used to use the Zn714 IC in my electronic classes when my students would build a radio with amplifier all powered from a 1.5V cell. The selectivity with the Zn714 was always poor even with a ferrite rod of around 6 inch length. The thing I liked was that the students could wind the aerial coils for both medium and long wave and just use a slide switch to change wavelengths. The amplifier was a class A output consisting of 3 BC107 (or BC547) driving a 8 ohm loudspeaker. (I got the circuit from Practical Wireless or Electronics sometime in the 1970's) When working the sound quality was good but not too loud which was an advantage when you had 20 students doing the same thing!