Showing posts with label trf. Show all posts
Showing posts with label trf. Show all posts

21 Apr 2019

Simple AM radio

Southgate News carries a report of someone's first steps into RF by building a simple TRF circuit. It uses a TA7642 TRF IC, which is like a ZN414 that some may remember. These form the basis of very simple TRF receivers. I recall making a similar circuit years ago for Medium Wave. As I recall, mine was fix tuned to Radio Cambridgeshire. I guess these ICs could be used for a simple RX in a 160m AM rig.

See http://southgatearc.org/news/2019/april/making-a-simple-am-radio.htm#.XLuJ7fZFy00