I find that my 1927 Regenerative Receiver does quite well with QRN. No agc, excessive gain, or ringing filter problems at all & simple audio filtering is very effective.
It has two different audio filters; one is a simple R/C that eliminates all the high frequencies. The other is an L/C peaking filter made from a Model T Ford spark coil secondary and a mica cap. Because of the large number of turns of fine wire, the series R is quite high, making for a low Q, non-ringing filter. If the first filter is switched in along with the second, the added C merely lowers the L/C center frequency, which seems to help with QRN. The resulting signal in the Baldy headphones is much more pleasant to listen to than that from my "modern" receiver set-up! The low (30" high) Beverage is also quieter than my 6 element vertical receive array when the QRN is high. Brian K8BHZ _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
