Rap 'n Tap
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From: W4HAY Frank
Date: 9/7/99
Time: 5:55:51 PM
Remote Name: 206.228.243.5
That was a 1S4 instead of a 1S5 that was inferior to the 1T4. The 1S4 is a power pentode. Funny but a while back I was reading an article in an old QST where they claimed very good results using a 6AQ5 as a regenerative detector and it's a power pentode also. Sorry for the mix-up.
From: John Nix
Date: 3/20/99
Time: 10:35:21 PM
Remote Name: 208.158.229.3
In Nazi occupied Europe posession of a radio was a death penalty offence. (However not all German soldiers believed in enforcing that law.) Crystal radios were built into cribbage boards (pancake coils, fixed detectors and tuning and earphones and antennas attached with metal cribbage pegs), and were smuggled into the POW camps in non-Red Cross packages from home.
Convoy ships liked crystal sets because U-boats could not home in on the local oscolator or IF signal.