Fw: Re: [HBR] transformers or capacitors

[hbr@mailman.qth.net]

HI TO ALL.

IT MUST BE MY TURN NOW TO MORE FULLY EXPLAIN THIS I F AMP.THE SHARP CHANNEL 
USES 11 HALLICRAFTERS # 50B489 I F TRANS. TUNED TO 50 KC THEY GIVE A 
SELECTIVITY CHARACTERISTIC THAT IS ABOUT 350 CYCLES WIDE AT 6 DB DOWN AND 
1300 CYCLES AT 60 DB DOWN.
THE WIDE CHANNEL USES 9 RCA 205R1 HORZ. OSC. TRANS. WHICH ARE MODIFIED. THEY 
ARE STAGER TUNED GIVING A BANDWIDTH OF ABOUT 2300 CYCLES AT 6 DB DOWN AND 5KC 
WIDE AT 60 DB DOWN.
THE TUNING IS ADJUSTED SO IT IS CENTERED ABOUT 1700 CYCLES HIGHER IN FREQ. 
THEN THE SHARP ONE THAN WHEN A PHONE CARRIER IS TUNED TO FALL IN THE CENTER 
OF THE SHARP AMP. ONE SIDEBAND FALLS IN THE BROADER AMP. 

THIS IS FROM 1955, HOW MANY HALLICRAFTERS,OR RCA DEALERS HAVE THOSE COILS? 
LOOKS LIKE A LOT OF COILS TO MAKE AT HOME.
 73s RAY N3XZV